33
28/ Jul/ SRF’11 @Chicago 1 Test Results of the International S1- Global Cryomodule Kirk

28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

Embed Size (px)

Citation preview

Page 1: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

28Jul2011 SRFrsquo11 Chicago

1

Test Results of the International S1-Global Cryomodule

Kirk

superconducting rf test facility

C Pagani P Pierini A Bosotti R Paparella INFN (Italy)

K Jensch D Kostin L Lilje A Matheisen W-D Moeller M Schmoekel P Schilling H Weise N Walker DESY (Germany)

T Arkan S Barbanotti M Battistoni H Carter

M Champion A Hocker R Kephart J Kerby D Mitchell Y Pischalnikov TJ Peterson M Ross W Schappert B Smith FNAL (USA)

C Adolphsen C Nantista SLAC (USA)

M Akemoto S Fukuda K Hara H Hayano N Higashi E Kako H Katagiri Y Kojima Y Kondo T Matsumoto H Matsushita

S Michizono T Miura H Nakai H Nakajima K Nakanishi S Noguchi N Ohuchi T Saeki M Satoh T Shidara T Shishido T Takenaka A Terashima N Toge K Tsuchiya K Watanabe S Yamaguchi

A Yamamoto Y Yamamoto(Kirk) K Yokoya M Yoshida KEK (Japan)

2

International Team for ldquoS1-Globalrdquo

28Jul2011 SRFrsquo11 Chicago

61 persons from 5 Labs

superconducting rf test facility

28Jul2011 3

Overview Motivation amp History of S1-Global Cavity Coupler and Tuner in S1-Global Cavity performance at VT Assembly and Cryomodule test Status Coupler conditioning at RT Tuner test with low power 2K LFD measurement LFD compensation by piezo 7 cavities operation Dynamic loss measurement (including Static loss) RF response at Quench for MHI-06 Summary

SRFrsquo11 Chicago

superconducting rf test facility

28Jul2011 4

Motivation amp History of S1-Global Motivation

Comparison of hardware performance concerning SRF technology for ILCCavityPower couplerTunerCryomodule

Mutual understanding among SRF researchers engineers and technicians

HistoryThis project was launched in a discussion of ILC-GDE in 2008The preparation including VT was in progress in 2009The assembly work started at the beginning of 2010The cryomodule test finished on Feb2011

SRFrsquo11 Chicago

superconducting rf test facility

528Jul2011 SRFrsquo11 Chicago

Blade Tuner (FNALINFN) Saclay Tuner (DESY)

Slide-Jack Tuner (KEK)

TTF-III Coupler (DESYFNAL) STF-II Coupler (KEK)

TESLA Cavity (DESYFNAL)Tesla-like (KEK)

Comparisonof

Performance

Main components in S1-G cryomodule

E Kako

The coupling is variable for both couplers

superconducting rf test facility

28Jul2011 6

S1-Global Cryomodule

SRFrsquo11 Chicago

Cryomodule-C(4 TESLA cavities 4 TTF-III couplers)

Cryomodule-A(4 TESLA-like cavities 4 STF-II couplers)

2 Blade tuners 2 Saclay tuners4 Slide-jack tuners (center or end)

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 7

Cavity Performance VT

2 cavities from FNAL 2 cavities from DESY

8 Cavities for S1-Global (ave 30 MVm)4 cavities from KEK

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 8

Collaboration for Cryomodule Assembly

Cavity string assembly (2010 Jan)

Tuner assembly (2010 Feb)

Coupler assembly (2010 Mar)

KEK Cavity string assembly (2010 Mar)

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 9

Installation into tunnel

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 10

Collaboration for Cryomodule Tests

Tuner performance tests (2010 July)

Cavity processing (2010 Sept)

Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako

superconducting rf test facility

Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)

05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW

28Jul2011 SRFrsquo11 Chicago 11

RF processing of input couplers

Aug 25 ~ Sept 07 (10 days) E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 12

RF processing time of input couplers

Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours

Cryomodule-A(STF-II couplers)ave processing time~ 13 hours

20 hr

20 hr

Vacuum IL 2x10-4 Pa

at room temperature

E KakoThe difference of the conditioning time between them is probably due to the structure of RF window

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 13

Adjustment of frequency (f0 )

Cryomodule - C Cryomodule - A

1300000MHz130000MHz

129992MHz

(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work

f0 = 129991 MHz (operation)

E KakoThe cause of these tuner troubles are probably due to the mechanical stress

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 14

QL of Variable Input Coupler

24 X 106

Cryomodule ndash C(TTF-III couplers)

Cryomodule ndash A(STF-II couplers)

E Kako The both couplers have a good performance for the adjustment of QL

QL = 24 x 106 Δfbw = 542Hz

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 2: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

C Pagani P Pierini A Bosotti R Paparella INFN (Italy)

K Jensch D Kostin L Lilje A Matheisen W-D Moeller M Schmoekel P Schilling H Weise N Walker DESY (Germany)

T Arkan S Barbanotti M Battistoni H Carter

M Champion A Hocker R Kephart J Kerby D Mitchell Y Pischalnikov TJ Peterson M Ross W Schappert B Smith FNAL (USA)

C Adolphsen C Nantista SLAC (USA)

M Akemoto S Fukuda K Hara H Hayano N Higashi E Kako H Katagiri Y Kojima Y Kondo T Matsumoto H Matsushita

S Michizono T Miura H Nakai H Nakajima K Nakanishi S Noguchi N Ohuchi T Saeki M Satoh T Shidara T Shishido T Takenaka A Terashima N Toge K Tsuchiya K Watanabe S Yamaguchi

A Yamamoto Y Yamamoto(Kirk) K Yokoya M Yoshida KEK (Japan)

2

International Team for ldquoS1-Globalrdquo

28Jul2011 SRFrsquo11 Chicago

61 persons from 5 Labs

superconducting rf test facility

28Jul2011 3

Overview Motivation amp History of S1-Global Cavity Coupler and Tuner in S1-Global Cavity performance at VT Assembly and Cryomodule test Status Coupler conditioning at RT Tuner test with low power 2K LFD measurement LFD compensation by piezo 7 cavities operation Dynamic loss measurement (including Static loss) RF response at Quench for MHI-06 Summary

SRFrsquo11 Chicago

superconducting rf test facility

28Jul2011 4

Motivation amp History of S1-Global Motivation

Comparison of hardware performance concerning SRF technology for ILCCavityPower couplerTunerCryomodule

Mutual understanding among SRF researchers engineers and technicians

HistoryThis project was launched in a discussion of ILC-GDE in 2008The preparation including VT was in progress in 2009The assembly work started at the beginning of 2010The cryomodule test finished on Feb2011

SRFrsquo11 Chicago

superconducting rf test facility

528Jul2011 SRFrsquo11 Chicago

Blade Tuner (FNALINFN) Saclay Tuner (DESY)

Slide-Jack Tuner (KEK)

TTF-III Coupler (DESYFNAL) STF-II Coupler (KEK)

TESLA Cavity (DESYFNAL)Tesla-like (KEK)

Comparisonof

Performance

Main components in S1-G cryomodule

E Kako

The coupling is variable for both couplers

superconducting rf test facility

28Jul2011 6

S1-Global Cryomodule

SRFrsquo11 Chicago

Cryomodule-C(4 TESLA cavities 4 TTF-III couplers)

Cryomodule-A(4 TESLA-like cavities 4 STF-II couplers)

2 Blade tuners 2 Saclay tuners4 Slide-jack tuners (center or end)

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 7

Cavity Performance VT

2 cavities from FNAL 2 cavities from DESY

8 Cavities for S1-Global (ave 30 MVm)4 cavities from KEK

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 8

Collaboration for Cryomodule Assembly

Cavity string assembly (2010 Jan)

Tuner assembly (2010 Feb)

Coupler assembly (2010 Mar)

KEK Cavity string assembly (2010 Mar)

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 9

Installation into tunnel

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 10

Collaboration for Cryomodule Tests

Tuner performance tests (2010 July)

Cavity processing (2010 Sept)

Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako

superconducting rf test facility

Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)

05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW

28Jul2011 SRFrsquo11 Chicago 11

RF processing of input couplers

Aug 25 ~ Sept 07 (10 days) E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 12

RF processing time of input couplers

Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours

Cryomodule-A(STF-II couplers)ave processing time~ 13 hours

20 hr

20 hr

Vacuum IL 2x10-4 Pa

at room temperature

E KakoThe difference of the conditioning time between them is probably due to the structure of RF window

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 13

Adjustment of frequency (f0 )

Cryomodule - C Cryomodule - A

1300000MHz130000MHz

129992MHz

(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work

f0 = 129991 MHz (operation)

E KakoThe cause of these tuner troubles are probably due to the mechanical stress

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 14

QL of Variable Input Coupler

24 X 106

Cryomodule ndash C(TTF-III couplers)

Cryomodule ndash A(STF-II couplers)

E Kako The both couplers have a good performance for the adjustment of QL

QL = 24 x 106 Δfbw = 542Hz

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 3: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 3

Overview Motivation amp History of S1-Global Cavity Coupler and Tuner in S1-Global Cavity performance at VT Assembly and Cryomodule test Status Coupler conditioning at RT Tuner test with low power 2K LFD measurement LFD compensation by piezo 7 cavities operation Dynamic loss measurement (including Static loss) RF response at Quench for MHI-06 Summary

SRFrsquo11 Chicago

superconducting rf test facility

28Jul2011 4

Motivation amp History of S1-Global Motivation

Comparison of hardware performance concerning SRF technology for ILCCavityPower couplerTunerCryomodule

Mutual understanding among SRF researchers engineers and technicians

HistoryThis project was launched in a discussion of ILC-GDE in 2008The preparation including VT was in progress in 2009The assembly work started at the beginning of 2010The cryomodule test finished on Feb2011

SRFrsquo11 Chicago

superconducting rf test facility

528Jul2011 SRFrsquo11 Chicago

Blade Tuner (FNALINFN) Saclay Tuner (DESY)

Slide-Jack Tuner (KEK)

TTF-III Coupler (DESYFNAL) STF-II Coupler (KEK)

TESLA Cavity (DESYFNAL)Tesla-like (KEK)

Comparisonof

Performance

Main components in S1-G cryomodule

E Kako

The coupling is variable for both couplers

superconducting rf test facility

28Jul2011 6

S1-Global Cryomodule

SRFrsquo11 Chicago

Cryomodule-C(4 TESLA cavities 4 TTF-III couplers)

Cryomodule-A(4 TESLA-like cavities 4 STF-II couplers)

2 Blade tuners 2 Saclay tuners4 Slide-jack tuners (center or end)

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 7

Cavity Performance VT

2 cavities from FNAL 2 cavities from DESY

8 Cavities for S1-Global (ave 30 MVm)4 cavities from KEK

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 8

Collaboration for Cryomodule Assembly

Cavity string assembly (2010 Jan)

Tuner assembly (2010 Feb)

Coupler assembly (2010 Mar)

KEK Cavity string assembly (2010 Mar)

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 9

Installation into tunnel

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 10

Collaboration for Cryomodule Tests

Tuner performance tests (2010 July)

Cavity processing (2010 Sept)

Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako

superconducting rf test facility

Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)

05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW

28Jul2011 SRFrsquo11 Chicago 11

RF processing of input couplers

Aug 25 ~ Sept 07 (10 days) E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 12

RF processing time of input couplers

Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours

Cryomodule-A(STF-II couplers)ave processing time~ 13 hours

20 hr

20 hr

Vacuum IL 2x10-4 Pa

at room temperature

E KakoThe difference of the conditioning time between them is probably due to the structure of RF window

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 13

Adjustment of frequency (f0 )

Cryomodule - C Cryomodule - A

1300000MHz130000MHz

129992MHz

(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work

f0 = 129991 MHz (operation)

E KakoThe cause of these tuner troubles are probably due to the mechanical stress

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 14

QL of Variable Input Coupler

24 X 106

Cryomodule ndash C(TTF-III couplers)

Cryomodule ndash A(STF-II couplers)

E Kako The both couplers have a good performance for the adjustment of QL

QL = 24 x 106 Δfbw = 542Hz

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 4: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 4

Motivation amp History of S1-Global Motivation

Comparison of hardware performance concerning SRF technology for ILCCavityPower couplerTunerCryomodule

Mutual understanding among SRF researchers engineers and technicians

HistoryThis project was launched in a discussion of ILC-GDE in 2008The preparation including VT was in progress in 2009The assembly work started at the beginning of 2010The cryomodule test finished on Feb2011

SRFrsquo11 Chicago

superconducting rf test facility

528Jul2011 SRFrsquo11 Chicago

Blade Tuner (FNALINFN) Saclay Tuner (DESY)

Slide-Jack Tuner (KEK)

TTF-III Coupler (DESYFNAL) STF-II Coupler (KEK)

TESLA Cavity (DESYFNAL)Tesla-like (KEK)

Comparisonof

Performance

Main components in S1-G cryomodule

E Kako

The coupling is variable for both couplers

superconducting rf test facility

28Jul2011 6

S1-Global Cryomodule

SRFrsquo11 Chicago

Cryomodule-C(4 TESLA cavities 4 TTF-III couplers)

Cryomodule-A(4 TESLA-like cavities 4 STF-II couplers)

2 Blade tuners 2 Saclay tuners4 Slide-jack tuners (center or end)

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 7

Cavity Performance VT

2 cavities from FNAL 2 cavities from DESY

8 Cavities for S1-Global (ave 30 MVm)4 cavities from KEK

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 8

Collaboration for Cryomodule Assembly

Cavity string assembly (2010 Jan)

Tuner assembly (2010 Feb)

Coupler assembly (2010 Mar)

KEK Cavity string assembly (2010 Mar)

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 9

Installation into tunnel

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 10

Collaboration for Cryomodule Tests

Tuner performance tests (2010 July)

Cavity processing (2010 Sept)

Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako

superconducting rf test facility

Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)

05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW

28Jul2011 SRFrsquo11 Chicago 11

RF processing of input couplers

Aug 25 ~ Sept 07 (10 days) E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 12

RF processing time of input couplers

Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours

Cryomodule-A(STF-II couplers)ave processing time~ 13 hours

20 hr

20 hr

Vacuum IL 2x10-4 Pa

at room temperature

E KakoThe difference of the conditioning time between them is probably due to the structure of RF window

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 13

Adjustment of frequency (f0 )

Cryomodule - C Cryomodule - A

1300000MHz130000MHz

129992MHz

(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work

f0 = 129991 MHz (operation)

E KakoThe cause of these tuner troubles are probably due to the mechanical stress

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 14

QL of Variable Input Coupler

24 X 106

Cryomodule ndash C(TTF-III couplers)

Cryomodule ndash A(STF-II couplers)

E Kako The both couplers have a good performance for the adjustment of QL

QL = 24 x 106 Δfbw = 542Hz

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 5: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

528Jul2011 SRFrsquo11 Chicago

Blade Tuner (FNALINFN) Saclay Tuner (DESY)

Slide-Jack Tuner (KEK)

TTF-III Coupler (DESYFNAL) STF-II Coupler (KEK)

TESLA Cavity (DESYFNAL)Tesla-like (KEK)

Comparisonof

Performance

Main components in S1-G cryomodule

E Kako

The coupling is variable for both couplers

superconducting rf test facility

28Jul2011 6

S1-Global Cryomodule

SRFrsquo11 Chicago

Cryomodule-C(4 TESLA cavities 4 TTF-III couplers)

Cryomodule-A(4 TESLA-like cavities 4 STF-II couplers)

2 Blade tuners 2 Saclay tuners4 Slide-jack tuners (center or end)

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 7

Cavity Performance VT

2 cavities from FNAL 2 cavities from DESY

8 Cavities for S1-Global (ave 30 MVm)4 cavities from KEK

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 8

Collaboration for Cryomodule Assembly

Cavity string assembly (2010 Jan)

Tuner assembly (2010 Feb)

Coupler assembly (2010 Mar)

KEK Cavity string assembly (2010 Mar)

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 9

Installation into tunnel

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 10

Collaboration for Cryomodule Tests

Tuner performance tests (2010 July)

Cavity processing (2010 Sept)

Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako

superconducting rf test facility

Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)

05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW

28Jul2011 SRFrsquo11 Chicago 11

RF processing of input couplers

Aug 25 ~ Sept 07 (10 days) E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 12

RF processing time of input couplers

Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours

Cryomodule-A(STF-II couplers)ave processing time~ 13 hours

20 hr

20 hr

Vacuum IL 2x10-4 Pa

at room temperature

E KakoThe difference of the conditioning time between them is probably due to the structure of RF window

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 13

Adjustment of frequency (f0 )

Cryomodule - C Cryomodule - A

1300000MHz130000MHz

129992MHz

(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work

f0 = 129991 MHz (operation)

E KakoThe cause of these tuner troubles are probably due to the mechanical stress

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 14

QL of Variable Input Coupler

24 X 106

Cryomodule ndash C(TTF-III couplers)

Cryomodule ndash A(STF-II couplers)

E Kako The both couplers have a good performance for the adjustment of QL

QL = 24 x 106 Δfbw = 542Hz

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 6: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 6

S1-Global Cryomodule

SRFrsquo11 Chicago

Cryomodule-C(4 TESLA cavities 4 TTF-III couplers)

Cryomodule-A(4 TESLA-like cavities 4 STF-II couplers)

2 Blade tuners 2 Saclay tuners4 Slide-jack tuners (center or end)

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 7

Cavity Performance VT

2 cavities from FNAL 2 cavities from DESY

8 Cavities for S1-Global (ave 30 MVm)4 cavities from KEK

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 8

Collaboration for Cryomodule Assembly

Cavity string assembly (2010 Jan)

Tuner assembly (2010 Feb)

Coupler assembly (2010 Mar)

KEK Cavity string assembly (2010 Mar)

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 9

Installation into tunnel

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 10

Collaboration for Cryomodule Tests

Tuner performance tests (2010 July)

Cavity processing (2010 Sept)

Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako

superconducting rf test facility

Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)

05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW

28Jul2011 SRFrsquo11 Chicago 11

RF processing of input couplers

Aug 25 ~ Sept 07 (10 days) E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 12

RF processing time of input couplers

Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours

Cryomodule-A(STF-II couplers)ave processing time~ 13 hours

20 hr

20 hr

Vacuum IL 2x10-4 Pa

at room temperature

E KakoThe difference of the conditioning time between them is probably due to the structure of RF window

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 13

Adjustment of frequency (f0 )

Cryomodule - C Cryomodule - A

1300000MHz130000MHz

129992MHz

(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work

f0 = 129991 MHz (operation)

E KakoThe cause of these tuner troubles are probably due to the mechanical stress

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 14

QL of Variable Input Coupler

24 X 106

Cryomodule ndash C(TTF-III couplers)

Cryomodule ndash A(STF-II couplers)

E Kako The both couplers have a good performance for the adjustment of QL

QL = 24 x 106 Δfbw = 542Hz

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 7: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 7

Cavity Performance VT

2 cavities from FNAL 2 cavities from DESY

8 Cavities for S1-Global (ave 30 MVm)4 cavities from KEK

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 8

Collaboration for Cryomodule Assembly

Cavity string assembly (2010 Jan)

Tuner assembly (2010 Feb)

Coupler assembly (2010 Mar)

KEK Cavity string assembly (2010 Mar)

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 9

Installation into tunnel

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 10

Collaboration for Cryomodule Tests

Tuner performance tests (2010 July)

Cavity processing (2010 Sept)

Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako

superconducting rf test facility

Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)

05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW

28Jul2011 SRFrsquo11 Chicago 11

RF processing of input couplers

Aug 25 ~ Sept 07 (10 days) E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 12

RF processing time of input couplers

Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours

Cryomodule-A(STF-II couplers)ave processing time~ 13 hours

20 hr

20 hr

Vacuum IL 2x10-4 Pa

at room temperature

E KakoThe difference of the conditioning time between them is probably due to the structure of RF window

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 13

Adjustment of frequency (f0 )

Cryomodule - C Cryomodule - A

1300000MHz130000MHz

129992MHz

(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work

f0 = 129991 MHz (operation)

E KakoThe cause of these tuner troubles are probably due to the mechanical stress

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 14

QL of Variable Input Coupler

24 X 106

Cryomodule ndash C(TTF-III couplers)

Cryomodule ndash A(STF-II couplers)

E Kako The both couplers have a good performance for the adjustment of QL

QL = 24 x 106 Δfbw = 542Hz

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 8: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 8

Collaboration for Cryomodule Assembly

Cavity string assembly (2010 Jan)

Tuner assembly (2010 Feb)

Coupler assembly (2010 Mar)

KEK Cavity string assembly (2010 Mar)

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 9

Installation into tunnel

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 10

Collaboration for Cryomodule Tests

Tuner performance tests (2010 July)

Cavity processing (2010 Sept)

Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako

superconducting rf test facility

Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)

05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW

28Jul2011 SRFrsquo11 Chicago 11

RF processing of input couplers

Aug 25 ~ Sept 07 (10 days) E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 12

RF processing time of input couplers

Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours

Cryomodule-A(STF-II couplers)ave processing time~ 13 hours

20 hr

20 hr

Vacuum IL 2x10-4 Pa

at room temperature

E KakoThe difference of the conditioning time between them is probably due to the structure of RF window

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 13

Adjustment of frequency (f0 )

Cryomodule - C Cryomodule - A

1300000MHz130000MHz

129992MHz

(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work

f0 = 129991 MHz (operation)

E KakoThe cause of these tuner troubles are probably due to the mechanical stress

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 14

QL of Variable Input Coupler

24 X 106

Cryomodule ndash C(TTF-III couplers)

Cryomodule ndash A(STF-II couplers)

E Kako The both couplers have a good performance for the adjustment of QL

QL = 24 x 106 Δfbw = 542Hz

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 9: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 9

Installation into tunnel

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 10

Collaboration for Cryomodule Tests

Tuner performance tests (2010 July)

Cavity processing (2010 Sept)

Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako

superconducting rf test facility

Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)

05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW

28Jul2011 SRFrsquo11 Chicago 11

RF processing of input couplers

Aug 25 ~ Sept 07 (10 days) E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 12

RF processing time of input couplers

Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours

Cryomodule-A(STF-II couplers)ave processing time~ 13 hours

20 hr

20 hr

Vacuum IL 2x10-4 Pa

at room temperature

E KakoThe difference of the conditioning time between them is probably due to the structure of RF window

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 13

Adjustment of frequency (f0 )

Cryomodule - C Cryomodule - A

1300000MHz130000MHz

129992MHz

(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work

f0 = 129991 MHz (operation)

E KakoThe cause of these tuner troubles are probably due to the mechanical stress

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 14

QL of Variable Input Coupler

24 X 106

Cryomodule ndash C(TTF-III couplers)

Cryomodule ndash A(STF-II couplers)

E Kako The both couplers have a good performance for the adjustment of QL

QL = 24 x 106 Δfbw = 542Hz

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 10: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 10

Collaboration for Cryomodule Tests

Tuner performance tests (2010 July)

Cavity processing (2010 Sept)

Dynamic loss meas (2010 Nov)Lorentz detuning tests (2010 Oct)E Kako

superconducting rf test facility

Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)

05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW

28Jul2011 SRFrsquo11 Chicago 11

RF processing of input couplers

Aug 25 ~ Sept 07 (10 days) E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 12

RF processing time of input couplers

Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours

Cryomodule-A(STF-II couplers)ave processing time~ 13 hours

20 hr

20 hr

Vacuum IL 2x10-4 Pa

at room temperature

E KakoThe difference of the conditioning time between them is probably due to the structure of RF window

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 13

Adjustment of frequency (f0 )

Cryomodule - C Cryomodule - A

1300000MHz130000MHz

129992MHz

(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work

f0 = 129991 MHz (operation)

E KakoThe cause of these tuner troubles are probably due to the mechanical stress

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 14

QL of Variable Input Coupler

24 X 106

Cryomodule ndash C(TTF-III couplers)

Cryomodule ndash A(STF-II couplers)

E Kako The both couplers have a good performance for the adjustment of QL

QL = 24 x 106 Δfbw = 542Hz

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 11: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

Cryomodule-C KLY1 (2MW)Cryomodule-A KLY2 (5MW)

05 ms 5 Hz 500 kW15 ms 5 Hz 200 kW

28Jul2011 SRFrsquo11 Chicago 11

RF processing of input couplers

Aug 25 ~ Sept 07 (10 days) E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 12

RF processing time of input couplers

Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours

Cryomodule-A(STF-II couplers)ave processing time~ 13 hours

20 hr

20 hr

Vacuum IL 2x10-4 Pa

at room temperature

E KakoThe difference of the conditioning time between them is probably due to the structure of RF window

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 13

Adjustment of frequency (f0 )

Cryomodule - C Cryomodule - A

1300000MHz130000MHz

129992MHz

(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work

f0 = 129991 MHz (operation)

E KakoThe cause of these tuner troubles are probably due to the mechanical stress

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 14

QL of Variable Input Coupler

24 X 106

Cryomodule ndash C(TTF-III couplers)

Cryomodule ndash A(STF-II couplers)

E Kako The both couplers have a good performance for the adjustment of QL

QL = 24 x 106 Δfbw = 542Hz

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 12: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 12

RF processing time of input couplers

Cryomodule-C(TTF-III couplers)ave processing time~ 21 hours

Cryomodule-A(STF-II couplers)ave processing time~ 13 hours

20 hr

20 hr

Vacuum IL 2x10-4 Pa

at room temperature

E KakoThe difference of the conditioning time between them is probably due to the structure of RF window

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 13

Adjustment of frequency (f0 )

Cryomodule - C Cryomodule - A

1300000MHz130000MHz

129992MHz

(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work

f0 = 129991 MHz (operation)

E KakoThe cause of these tuner troubles are probably due to the mechanical stress

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 14

QL of Variable Input Coupler

24 X 106

Cryomodule ndash C(TTF-III couplers)

Cryomodule ndash A(STF-II couplers)

E Kako The both couplers have a good performance for the adjustment of QL

QL = 24 x 106 Δfbw = 542Hz

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 13: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 13

Adjustment of frequency (f0 )

Cryomodule - C Cryomodule - A

1300000MHz130000MHz

129992MHz

(A4MHI-09 129991 MHz limit)C2ACC011 Tuner did not work

f0 = 129991 MHz (operation)

E KakoThe cause of these tuner troubles are probably due to the mechanical stress

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 14

QL of Variable Input Coupler

24 X 106

Cryomodule ndash C(TTF-III couplers)

Cryomodule ndash A(STF-II couplers)

E Kako The both couplers have a good performance for the adjustment of QL

QL = 24 x 106 Δfbw = 542Hz

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 14: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 14

QL of Variable Input Coupler

24 X 106

Cryomodule ndash C(TTF-III couplers)

Cryomodule ndash A(STF-II couplers)

E Kako The both couplers have a good performance for the adjustment of QL

QL = 24 x 106 Δfbw = 542Hz

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 15: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 15

Cavity performance between VT and CT

Ave 30MVm VTAve 28MVm CT (single cavity)Ave 26MVm CT (7 cavities)

Unfortunately the gradient did not achieve the ILC specification

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 16: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 16

severe drop

Cavity performance between VT and CT

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 17: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 17

Status of high power operation

Real time detuning monitor

S Michizono

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 18: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 18

Frequency shift due to Lorentz detuningC4Z109 (29MVm) A2MHI-06 (38MVm)

FBon Piezooff FBon Piezooff

Pre-detuningby motor tuneramp piezo tunerwith DC voltage

Compensationby piezo tuner inpulsed operation

Flat TopFlat Top

Rise Time Rise Time

200~500 Hz 2~3 kHz

E Kako

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 19: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

Pulse-shortening amp Data Analysis method

28Jul2011 SRFrsquo11 Chicago 19

50μsec step shortening

100 pulses average

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 20: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

Result of LFD measurement

28Jul2011 SRFrsquo11 Chicago 20

Cryomodule-A Cryomodule-C

We can estimate the detuning frequency for the period of rise-up flat-top and full-pulse

f = K Eacc2

rise-upflat-topfull-pulse

rise-upflat-topfull-pulse

K [Hz(MVm)2] stiffness parameter

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 21: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 21

Comparison of Detuning Frequency by LFD

TESLA-like cavity package has a stiffer structure than others

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 22: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 22

Parameters of Piezo drive pulse

delay time

dc V

drive V

drive frequency (Hz)

Single pulse of inverse cosine waveform

Eacc

Pinput

D ft

Pre-detuning by motor tuner

control panel

Piezo drive pulse

RF Feedback ON E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 23: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 23

Result of Piezo Compensation for LFD

Δfpeak-to-peak

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 24: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 24

QL ΔfAES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

1708 1853

6305 pulses

7 Cavities OperationACC11 detuned

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 25: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

25SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Δf1708 1853

He pressure

He flow

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 26: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 26

QL

AES4

ZANON108 ZANON109

MHI5 MHI6

MHI7 MHI9

7 Cavities OperationACC11 detuned

AES4 ZANON108ZANON109

MHI5 MHI6 MHI7 MHI9ACC11

Required rf power for 8-cav operation

ndash39

ndash35

ndash07

ndash11

ndash16

+05

ndash06

More RF power is necessary for MHI6 and 7This means the inner conductor of the input coupler may be expanded due to the heatingThe couplers lead to more over-coupled situation

E Kako

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 27: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 27

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

AES4

10MVm 10MVm

10MVm

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 28: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28SRFrsquo11 Chicago 28Jul2011

7 Cavities Operation

Eacc Eacc Eacc

φ φ φ

MHI6

10MVm10MVm 10MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 29: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 29

RF response of Quench for MHI6 40MVm

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 30: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 30

Dynamic Loss measurement

STF-II coupler has more heat loss than TTF-IIIThis point should be improved in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 31: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 31

TroublesThe performance of the two cavities dropped

between VT and CT

The tuners of the two cavities did not work at 2K

These problems are investigated in the near future

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 32: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 32

Summarybull Assembly work by the S1-Global team was successful

bull 6 of 8 cavities reached the almost same gradient at the cryomodule test as the vertical test

bull Mechanical vibration modes were found to vary from cavity to cavity

bull LFD measurement was successful MHI cavity turned out to be stiffer

bull Compensation by piezo was successful All types of the tuners tested have demonstrated good effectiveness

bull Simultaneous operation of seven cavities was comparatively stable The QL decreased gradually during the operation for every power coupler

bull From the results of the dynamic loss measurement it was observed the STF-II coupler has a larger heat loss

bull Communication among the international members of the S1-Global team worked well

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention

Page 33: 28/Jul/2011 SRF’11 @Chicago 1 Test Results of the International S1-Global Cryomodule Kirk

superconducting rf test facility

28Jul2011 SRFrsquo11 Chicago 33

Thank you for your attention