ESS weekly meeting (2021 W34)

A. Miyazaki et al.

General planning updated

2We are here Potential CM01 departure

& CM03 reception

One week extended for stepper motor tests

SAT SUN

21-aug 22-aug

m a m a m a m a m a

present CM CM01 He purging N2 cooling LHe fillingcoupler cold

conditioning

2K

pumping,

f vs P

RF

calibration,

LLRF

interlock

next CM CM04

thermalize CTS

week

date

4K coolingcavity MP conditioning

up to 12MV/m

no acvitities

W33

MON

16-aug

TUE

17-aug

WED

18-aug

THU

19-aug

FRI

20-aug

SAT SUN

28-aug 29-aug

m a m a m a m a m a

present CM CM01static heat

load

next CM CM04

week

date

W34

MON TUE WED THU FRI

prepare motor driver CTS test at 4K

23-aug 24-aug 25-aug 26-aug 27-aug

no acvitities

SAT SUN

04-sep 05-sep

m a m a m a m a m a

present CM CM012K

pumpingCTS test LFD

dynamics heat

load

cavity

measureme

nt continued

next CM CM04

CTS testcavity measurement

continuedwarming up

doorknob mounting

week W35

date

MON TUE WED THU FRI

30-aug 31-aug 01-sep 02-sep 03-sep

W33&W34 progress and W35 planning

3

We are here

Goal

Phytron driver did not work with

the LabVIEW code from Orsay

Space for 2-3 more modules at FREIA?

4

• Even without the wooden

box, our docking are is

occupied by working place

and plenty of pallets

• We are not allow to leave

anything outside the building

for a few days

• Considering that we anyway

need the box before

transport, having more

module is not an option for us

Let’s start from a good news 1/2

5

CAV IN reached 12MV/m

without field emission

Let’s start from a good news 2/2

6

CAV OUT reached 12MV/m

without field emission

Multipacting bands and X-rays

7

CAV

OUT

CAV

IN

X-ray

detector

2600mm 1100mm

1440m

m

From Mysha

8

Static heat load w/o CTS engaged

1st measurment

2021-08-23 8:43

FT551 = 14,76 SD = 0,58 m3/h

15.70 +/- 0.62 W

PT03_min = 31mbar

PT03_max = 35,5mbar

LT01_min = 59,95cm

LT01_max = 62,19cm

CV551 = 17%

CV03 0%

CV01 0%

CV04 = 100%

2nd measurement

2021-08-23 16:46

FT551 = 14,06 SD = 0,23 m3/h

15.04 +/- 0.25 W

PT03_min = 30,59mbar

PT03_max = 30,89mbar

LT01_min = 60,44cm

LT01_max = 61,76cm

CV551 = 17%

CV03 = 30%

CV01 = 0%

CV04 = 50%

CM05 +1.29 mbar/minCM01 +1.28 mbar/min

CM03 +1.27 mbar/min

Pressure rise method (relative)

CM05

CM01

CM03

They are consistent although CM05 and

CM03 were measured w/ CTS engaged

From linear fitting

1st meas.

2nd meas.

Heat load@2K [W] = 1.07 x mass flow [m3/h]

Mass flow method CM01 preliminary

By Romain & Carl

By Romain & Carl

CTS cooling down curve 1/2

9

Reminder: anomaly in CM03 (by Nicolas)

CM05

CM03

Stepper motor must

be more separated

from the cavity i.e.

higher baseline T

Normal case

Anomalous case

Stepper motor T of CTS1 (broken

motor) reached baseline T of

disengage system (closer to the

cavity)

We speculated that

CTS1 might touch cold

part during cooling down

CTS cooling down curve 2/2

10

Plot from Carl

CM01

Stepper motor T of CTS2 reached

baseline T of disengage system

(closer to the cavity)

Issue 1: Phytron motor driver

11

PC

Phytron driver

motor

RS232-USB

Or

Direct RS232

4 wires

No strange vibration unlike

the one observed by ESS

using the old beckhoff PLC

RS232 works

12

We can rotate the motor by Phytron’s software but

did not know all the engineering parameters

LabVIEW from Orsay does not work

13

This main VI convert physical parameters

we know to engineering parameters

Sub-VI works as

the other software

Main VI does

not work

(communicati

on error)

Decision: wait until

complete instruction

from experts

Fresh news: experts helped this morning

14

David Ledrean@Orsay checked all the parameters

• Three currents setup

• Stop current 0A

• Run current 0.6A

• Boost current not used

• Step resolution 1/8 step

• So that 1600 steps gives one motor shaft turn

• No comment on delay time

• Frequency 2400 Hz

• “Acceleration” needs command-line and “XP15R”

command showed 500000Hz/s which is correct

LabVIEW still does not work but not necessary

Issue 2: FREIA LLRF system 1

15

03-33

03-30

Upper

Circulator

Dir

Coupler

Electrosys RF

Station

Ca

vity

1

Dir

Coupler

RF Switch 1

Circulator

Freia Hall

Bunker

Control room

Band Pass

03-0602-225

6 dB

Splitter

03-23

6 dB

Splitter

03-20

03-19

LLRF ESS

VM

CH0 (1)

Interlock 1

03-0203-03

Attenuator

03-04

LimiterAmp

02-219

PMeter1

Scope/Spectrum

03-18

6 dB

Splitter

03-10

03-09 / NC

03-11

PMeter3

03-16

03-07

3 dB

03-08

03-22CH4 (5)

CH3 (4)

CH5 (6)

Scope

03-31

Compact Rio

Interlock

AI1

Cav Quench Warning?

AI2

LLRF Freia

Attenuator

03-13/NC

AI3

03-17

3.4d

B

03-01

03-24

NC SEL loop ONLY

LimiterLimiter

03-12/NC

Inside RF-Box 1

Inside RF-Box 1

Patch

Panel

Out3 - Pulse Control Signal

2.86 ms pulse lenght @14 Hz

OBS fr system 2

Out2 - Blanking Signal

4 ms pulse lenght @14 Hz

NI5761

NI5782

03-32/NCSEL Loop to Amp over InterLock

switch

LLRF1_BS

50 Ohm Resistor

AI1

AO0

Low Pass

03-05

Signal

Gen

Lo

ad

Load

Cav1 Forward

Cav1 ReflectedFP

C1

Trig1

Trig

RF system 1

Inside RF-Box 1

Cav1 Transmitted

03-15

03-14

P

a

n

e

l

R

3

P

a

n

e

l

R

4

02-204

Psen

PsenPM3chA

Psen

PM1chB

PM1chA

chB

chA

chA

3 dB

03-27

03-29CH1 (2)

03-28

Coupling-box-C1

REF

Cav1

02-203

03-21Band Pass

Band Pass

03-38

03-35

(10.79 dB))

(No Label on connector

side/Be carefull)

02-218

(11.1 dB)

(16.7 dB)

02-225 = Cable Number

(15.4 dB) = Attenuation

30dB84.5dB

(0.7 dB)

(0.4 dB)(1.3 dB)(1.7 dB) (1.3 dB) (0.1 dB)(1.0 dB)

(1.0 dB)

(6.3 dB)

(3 ~ 40 dB) (1.0 dB)

Band Pass

(03-34/NC (from Out3-ONLY if SEL))

Pulse

Gen

03-35 spl

03-39

Trig2

03-36

OBS!

Cable# 1-8 corresponds

to channel# 0-7

Cable# in brackets

Signal

Gen

03-38

3.4dB

03-26

-10dB

03-13/NC = Not Connected

LO

03-37

(PM2)

-20 dB

-20 dB

Issue 2: FREIA LLRF system 1

16

03-33

03-30

Upper

Circulator

Dir

Coupler

Electrosys RF

Station

Ca

vity

1

Dir

Coupler

RF Switch 1

Circulator

Freia Hall

Bunker

Control room

Band Pass

03-0602-225

6 dB

Splitter

03-23

6 dB

Splitter

03-20

03-19

LLRF ESS

VM

CH0 (1)

Interlock 1

03-0203-03

Attenuator

03-04

LimiterAmp

02-219

PMeter1

Scope/Spectrum

03-18

6 dB

Splitter

03-10

03-09 / NC

03-11

PMeter3

03-16

03-07

3 dB

03-08

03-22CH4 (5)

CH3 (4)

CH5 (6)

Scope

03-31

Compact Rio

Interlock

AI1

Cav Quench Warning?

AI2

LLRF Freia

Attenuator

03-13/NC

AI3

03-17

3.4d

B

03-01

03-24

NC SEL loop ONLY

LimiterLimiter

03-12/NC

Inside RF-Box 1

Inside RF-Box 1

Patch

Panel

Out3 - Pulse Control Signal

2.86 ms pulse lenght @14 Hz

OBS fr system 2

Out2 - Blanking Signal

4 ms pulse lenght @14 Hz

NI5761

NI5782

03-32/NCSEL Loop to Amp over InterLock

switch

LLRF1_BS

50 Ohm Resistor

AI1

AO0

Low Pass

03-05

Signal

Gen

Lo

ad

Load

Cav1 Forward

Cav1 ReflectedFP

C1

Trig1

Trig

RF system 1

Inside RF-Box 1

Cav1 Transmitted

03-15

03-14

P

a

n

e

l

R

3

P

a

n

e

l

R

4

02-204

Psen

PsenPM3chA

Psen

PM1chB

PM1chA

chB

chA

chA

3 dB

03-27

03-29CH1 (2)

03-28

Coupling-box-C1

REF

Cav1

02-203

03-21Band Pass

Band Pass

03-38

03-35

(10.79 dB))

(No Label on connector

side/Be carefull)

02-218

(11.1 dB)

(16.7 dB)

02-225 = Cable Number

(15.4 dB) = Attenuation

30dB84.5dB

(0.7 dB)

(0.4 dB)(1.3 dB)(1.7 dB) (1.3 dB) (0.1 dB)(1.0 dB)

(1.0 dB)

(6.3 dB)

(3 ~ 40 dB) (1.0 dB)

Band Pass

(03-34/NC (from Out3-ONLY if SEL))

Pulse

Gen

03-35 spl

03-39

Trig2

03-36

OBS!

Cable# 1-8 corresponds

to channel# 0-7

Cable# in brackets

Signal

Gen

03-38

3.4dB

03-26

-10dB

03-13/NC = Not Connected

LO

03-37

(PM2)

-20 dB

-20 dB

• Signal monitoring, field decay,

LFD, SEL (backup)

• Quench interlock

• Open loop DAC

• fast RF interlocks

Issue 2: FREIA LLRF system 1

17

• Individual modules (ADCs + FPGA) work fine after summer vacation

• Synchronization (trigger) through PXI crate was malfunctioning because of a change

in the system settings Works fine after a correction in settings

• Cause still unknown

• Hard reset after the power failure this summer (thunder storm power-cuts)?

• Some sort of reset or change in the system settings when the RS-232 module

was installed?

SAT SUN

21-aug 22-aug

m a m a m a m a m a

present CM CM01 He purging N2 cooling LHe fillingcoupler cold

conditioning

2K

pumping,

f vs P

RF

calibration,

LLRF

interlock

next CM CM04

thermalize CTS

week

date

4K coolingcavity MP conditioning

up to 12MV/m

no acvitities

W33

MON

16-aug

TUE

17-aug

WED

18-aug

THU

19-aug

FRI

20-aug

SAT SUN

28-aug 29-aug

m a m a m a m a m a

present CM CM01static heat

load

next CM CM04

week

date

W34

MON TUE WED THU FRI

prepare motor driver CTS test at 4K

23-aug 24-aug 25-aug 26-aug 27-aug

no acvitities

SAT SUN

04-sep 05-sep

m a m a m a m a m a

present CM CM012K

pumpingCTS test LFD

dynamics heat

load

cavity

measureme

nt continued

next CM CM04

CTS testcavity measurement

continuedwarming up

doorknob mounting

week W35

date

MON TUE WED THU FRI

30-aug 31-aug 01-sep 02-sep 03-sep

W33&W34 progress and W35 planning

18

We are here

Goal

Phytron driver is OK but doubt

in temperature on stepper

motor during cooling down

2K