2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida 1 KEK Beam Test for MICE SciFi Tracker - KEK-PS T585 - M. Yoshida MICE CM@RAL 2005/10/24 2005/10/24

2005/10/242005/10/24 MICE CM at RAL, KEK test beaMICE CM at RAL, KEK test beam, Makoto Yoshidam, Makoto Yoshida

11

KEK Beam TestKEK Beam Test for MICE SciFi Tracker for MICE SciFi Tracker

- KEK-PS T585 -- KEK-PS T585 -

M. YoshidaM. YoshidaMICE CM@RALMICE CM@RAL

2005/10/242005/10/24


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ContentsContents

KEK-PS T585 setupKEK-PS T585 setup Beam propertiesBeam properties SciFi tracker (quick) analysisSciFi tracker (quick) analysis


33

Tracker prototype test in KEKTracker prototype test in KEKKEK-PS T585KEK-PS T585

MICE SciFi tracker group planed testing MICE SciFi tracker group planed testing prototype to check basic performance iprototype to check basic performance in 1 Tesla solenoid magnet.n 1 Tesla solenoid magnet.

KEK-PS T585 was performed in Sept. – KEK-PS T585 was performed in Sept. – Oct. 2005 by world-wide collaboration.Oct. 2005 by world-wide collaboration.

Participants: more than 20 people joinParticipants: more than 20 people joined.ed.

M. Yoshida, K. Yoshimura, H. SakamotM. Yoshida, K. Yoshimura, H. Sakamoto, A. Horikoshi, K. Sakai, Yoshi Kuno, o, A. Horikoshi, K. Sakai, Yoshi Kuno, A. Sato and several students A. Sato and several students

Aron. Fish, Roger. Hare, K. Long, M. ElliAron. Fish, Roger. Hare, K. Long, M. Elliss

Amit Klier, Kwame. Bowie, Xiofeng YanAmit Klier, Kwame. Bowie, Xiofeng Yang, Alan Bross , P. Rubinovg, Alan Bross , P. Rubinov

J.S. GraulichJ.S. Graulich

KEK-PS 2 beamline


44

T585 SetupT585 Setup

A. Horikoshi

1-Tesla SC solenoid magnet


55

Aerogel Cherenkov CounterAerogel Cherenkov Counter

Refractive index : n=1.05Refractive index : n=1.05 7 blocks x (100mmx98m7 blocks x (100mmx98m

mx11mm)mx11mm) Reflection in Al case with Reflection in Al case with

GoretexGoretex Sensitive to muons of 32Sensitive to muons of 32

8 - 434 MeV/c8 - 434 MeV/c 95% muon eff. <-> 5% pi95% muon eff. <-> 5% pi

on contaminationon contamination


66

Experimental Hall / T1 / ACCExperimental Hall / T1 / ACC

T1

ACC


77

4-Station Tracker Prototype4-Station Tracker Prototype

BEAMBEAM

VLPC2 cassette2048 ch

internal waveguide 120cm

External waveguide 400cm

Old waveguide 400cm


88

Tracker installationTracker installation


99

TOF setupTOF setup 2.5inch finemesh P2.5inch finemesh P

MT (R6504S)MT (R6504S) Light guideLight guide ScintillaterScintillater

TOF 1 →5

TO

F 6

10

PMT A

PMT B

PM

T A

PM

T B

40 c

m53

cm

5+5 hodoscope(2cm thick + 2cm thick)

2005.9.26


1010

DAQDAQ VME ADCs/TDCs for beam countersVME ADCs/TDCs for beam counters VLSB (VME LVDS SERDES BUFFER) for VLVLSB (VME LVDS SERDES BUFFER) for VL

PCPC Trigger logic on NIMTrigger logic on NIM A lot of delay cableA lot of delay cable Linux-PC/Windows-PC with Bit3 interfaceLinux-PC/Windows-PC with Bit3 interface

Hardware check with test program on WindHardware check with test program on Windows-PCows-PC

Slow control (AFE initialization, Bias settinSlow control (AFE initialization, Bias setting, Temperature control) and readout of VLg, Temperature control) and readout of VLSB is done by standalone program, “VLPCdSB is done by standalone program, “VLPCdaq” on Lunux-PCaq” on Lunux-PC

Integrated DAQ for beam counters and VLPIntegrated DAQ for beam counters and VLPC in the framework of UniDAQ on Linux-PCC in the framework of UniDAQ on Linux-PC

PIO access on every event:PIO access on every event: > 2kHz for beam counter> 2kHz for beam counter ~50Hz for VLPC~50Hz for VLPC

GUI controller to select detectors to be reaGUI controller to select detectors to be readoutdout

Switch to select run modeSwitch to select run mode beam / pedestal / LEDbeam / pedestal / LED


1111

History of T585History of T585 2005.Feb / May : KEK beam test for TOF / ACC R&D2005.Feb / May : KEK beam test for TOF / ACC R&D 2005.Aug. 24 : VLPC system was delivered to KEK.2005.Aug. 24 : VLPC system was delivered to KEK.

Cryostat commissioningCryostat commissioning Keep cooling until Oct. 7Keep cooling until Oct. 7

Sept. 7-14 : test bench for DAQ/Trigger logic setup. Sept. 7-14 : test bench for DAQ/Trigger logic setup. Sept. 20 : Remove USHIWAKA magnet and cleanup Sept. 20 : Remove USHIWAKA magnet and cleanup 2 area2 area Sept. 21-24Sept. 21-24

Set the solenoid magnetSet the solenoid magnet investigate fiber mapping on the 4investigate fiber mapping on the 4thth station of tracker station of tracker Install the trackerInstall the tracker Install TOF, ACC and beam counters.Install TOF, ACC and beam counters.

Sept. 27 : Accelerator tuning startedSept. 27 : Accelerator tuning started Sept. 28 – Oct. 1 : Started setting VLPC, checking pedestal, test charge Sept. 28 – Oct. 1 : Started setting VLPC, checking pedestal, test charge

injectioninjection TOF calibration run, ACC calibration run and beam survay in the nights.TOF calibration run, ACC calibration run and beam survay in the nights.

Sept. 29 : Okonomiyaki partySept. 29 : Okonomiyaki party Oct. 2-3 : VLPC system commissioning. Timing tuning for LED on VLPC.Oct. 2-3 : VLPC system commissioning. Timing tuning for LED on VLPC. Oct. 3 : Waveguides were plugged on VLPC cassette.Oct. 3 : Waveguides were plugged on VLPC cassette. Oct. 4-5 : Timing tuning on VLPC trigger for beamOct. 4-5 : Timing tuning on VLPC trigger for beam Oct. 6 – Oct. 7 : Stable data taking.Oct. 6 – Oct. 7 : Stable data taking. 5pm on Oct. 7 : data taking ended. immediate removal of all equipment 5pm on Oct. 7 : data taking ended. immediate removal of all equipment

in the experimental area.in the experimental area. End-Run party at Sutamina-TARO: buffet of meat, SUSHI, and many kinds of fEnd-Run party at Sutamina-TARO: buffet of meat, SUSHI, and many kinds of f

ood.ood.


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DATA SetDATA Set

VLPC LEDVLPC LED

Magnet ON / OFFMagnet ON / OFF 1 Tesla solenoid1 Tesla solenoid

Beam momentumBeam momentum 3 GeV/c3 GeV/c 0.25 – 0.4 GeV/c0.25 – 0.4 GeV/c

RotationRotation 0 / 3 deg. / 6 deg.0 / 3 deg. / 6 deg.

Al target just upstream Al target just upstream tracker to produce tracker to produce multi-trackmulti-track


1313

2

)(

mean

ACCN pe

p.e. 3249

2772

Light yield in ACCLight yield in ACC

= 277 cnts = 49 cnts

3 GeV/c 3 GeV/c

After-pulse in High-gain PMT causes the tail

10 fine-mesh PMTs surrounde10 fine-mesh PMTs surrounded Aerogel blockd Aerogel block

Large light yield in Aerogel with Large light yield in Aerogel with refractive index of n=1.05refractive index of n=1.05

Ability to distinguish muons agAbility to distinguish muons against electron/pion backgrounainst electron/pion backgroundd


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Time of flight (ps)

Ligh

t yi

eld

in A

CC

(A

DC

cnt

s)Particle identification by TOF & Particle identification by TOF &

ACCACC

Good PID perforGood PID performance for emance for e

400MeV/c400MeV/c

e


1515

Timing resolution of TOF Timing resolution of TOF countercounter

After After slewing slewing correctioncorrection

(TOF8-T1)=74ps(TOF8-T1)=74ps (T1)=45ps(T1)=45ps (TOF8)=60ps(TOF8)=60ps

TOF 1 2 3 4 5TOF 1 2 3 4 5

6 7 6 7 88 9 10

9 10

TOF8-T1TOF8-T1

-400 400 ps

= 74ps= 74ps

Run1255, -3GeV/cRun1255, -3GeV/c


1616

Timing resolution of TOF Timing resolution of TOF counterscounters

0

10

20

30

40

50

60

70

80

90

100

0 2 4 6 8 10 12

TOF #

tim

ing

resolu

tion (

ps)

tracker test

Difference in two testsDifference in two tests• TDC: CAMAC (28 ps resolution) TDC: CAMAC (28 ps resolution) VME CAEN V1290 (25 ps) VME CAEN V1290 (25 ps)• ADC: CAMAC (0.6 pC/count) ADC: CAMAC (0.6 pC/count) VME CAEN V792 (0.1 pC/cnt) VME CAEN V792 (0.1 pC/cnt)

Combination of horizontalCombination of horizontaland vertical counters and vertical counters < 50ps < 50ps

May testMay test(KEK-PS T571)(KEK-PS T571)

This testThis test(KEK-PS T585)(KEK-PS T585)


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Timing resolution of TOF hodoscopeTiming resolution of TOF hodoscope

Hodoscope = CombinatHodoscope = Combination of Horizontal and Vion of Horizontal and Vertical countersertical counters

(hodoscope-T1)=60ps(hodoscope-T1)=60ps (T1)=45ps(T1)=45ps (Hodoscope)=40ps(Hodoscope)=40ps

(Average of horizontal and vertical TOF counters) -T1

-300 300 ps

= 60 ps= 60 ps


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Time of flight measurementTime of flight measurementfor various momentumfor various momentum

good good separatio separation > 3n > 3

Can measure:Can measure: muon fraction in bemuon fraction in be

amam beam momentum frbeam momentum fr

om timing differencom timing difference of e-e of e- & e- & e-

ee

ee

2000ps2000ps2000ps2000ps

2000ps2000ps 2000ps2000ps


1919

Measured beam momentumMeasured beam momentumby TOFby TOF

303 MeV/c303 MeV/c

310 MeV/c310 MeV/c

376 MeV/c376 MeV/c

386 MeV/c386 MeV/c

229 MeV/c229 MeV/c

234 MeV/c234 MeV/c

Beam momentum is measured to be quite stable Beam momentum is measured to be quite stable within a few MeV/c for the setting of 250MeV/c – 400 within a few MeV/c for the setting of 250MeV/c – 400 MeV/cMeV/c

5 M

eV/c

7 M

eV/c

10 M

eV/c

3 deg.6

3 deg.63 deg.6

RUN# RUN# RUN#


2020

Analysis on TrackerAnalysis on Tracker

LED calibrationLED calibration Photon yieldPhoton yield 2D Tracking2D Tracking

Fiber AlignmentFiber Alignment 3D Tracking3D Tracking

Reconstruct spiral track in solenoid Reconstruct spiral track in solenoid magnetmagnet


2121

VLPC gain calibrationVLPC gain calibration Gain is estimated by gaussian fitting Gain is estimated by gaussian fitting

on LED dataon LED data

AFE board #106MCM #1Channel #1

pedestal

1 p.e.AFE board #107MCM #1Channel #1

~ 8 cnts/p.e.


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DEAD CHANNELDEAD CHANNEL

VLPC dead (estimated by LED run)VLPC dead (estimated by LED run) AFE board# 104: ? channelsAFE board# 104: ? channels # 107: 3 channels# 107: 3 channels # 106: 4 channels# 106: 4 channels # 105: 4 channels# 105: 4 channels

““Fiber dead” (estimated by normal Fiber dead” (estimated by normal run)run) NOT YET STUDIED....NOT YET STUDIED....


2323

Photon signal of SCIFIPhoton signal of SCIFIRaw signal converted into photo electron Raw signal converted into photo electron

after subtracting common modeafter subtracting common mode

RUN# 1255RUN# 1255 B=0T , Rotation=0deg,B=0T , Rotation=0deg, w/o diffuserw/o diffuser

We are checking light yield in selected fibers on We are checking light yield in selected fibers on reconstructed track for each station / each viewreconstructed track for each station / each view

10 p.e. 20 p.e.


2424

2D TRACKING2D TRACKING

HITHIT Fibers over 2.5 p.e.Fibers over 2.5 p.e.

FITTINGFITTING Minimum chi-square fitMinimum chi-square fit X view : y position YxX view : y position Yx V view : x position Xuv crossed with X viewV view : x position Xuv crossed with X view W view: x position Xuw crossed with W viewW view: x position Xuw crossed with W view

#1 #2 #3 #4

X VIEW

V VIEWW VIEW

X

Y

Xuv Xuw

Yx

BEAM


2525

VIEW alignment in a StationVIEW alignment in a Station

X position X position XwXw

X p

osi

tion

Xv

X p

osi

tion

Xv

X VIEW

V VIEWW VIEW

Xv Xw

Good agreement within V-view and W-view good fiber sheet arrangement on the station


2626

MAPPING/ FIBER ALIGNMENTMAPPING/ FIBER ALIGNMENT

Fiber # (station 1)

Fib

er #

(s

tati

on

2)

After some bug-fix on mapping.....After some bug-fix on mapping.....

Fiber # (station 1)fib

er #

(S

tati

on

2-S

tati

on

1)

Consistent with beam divergence, but still need to carefully Consistent with beam divergence, but still need to carefully check on every combination of the stationscheck on every combination of the stations


2727

3D TRACKING3D TRACKING

HITHIT Fibers of maximum light yieldFibers of maximum light yield

FITTINGFITTING Circular fittingCircular fitting

#2 #3 #4

BEAM

#1


2828

RECONSTRUCTED EVENTRECONSTRUCTED EVENT

240 MeV/c by TOF

RUN# 1320RUN# 1320 B=1T , Rotation=6deg., w/o diffuser B=1T , Rotation=6deg., w/o diffuser


2929

SummarySummary KEK-PS T585 has been performed successfully by world-wide collaboraKEK-PS T585 has been performed successfully by world-wide collabora

tion, to check basic property of the SciFi tracker in 1-Tesla magnetic fition, to check basic property of the SciFi tracker in 1-Tesla magnetic field.eld.

Integrated DAQ for beam counters and 2048 ch VLPC readout works wIntegrated DAQ for beam counters and 2048 ch VLPC readout works wellell but slow ~50Hz … but slow ~50Hz … will need event buffering in MICEwill need event buffering in MICE

4-Station SciFi tracker prototype works well4-Station SciFi tracker prototype works well Successful tracking in magnetic field !Successful tracking in magnetic field ! light yield is under estimatelight yield is under estimate

The information of T585 has been collected in the web pageThe information of T585 has been collected in the web page http://133.1.141.121/~yoshida/MICE/T585/index.htmlhttp://133.1.141.121/~yoshida/MICE/T585/index.html geometry, run summary table, DAQ, fiber mapping, VLPC LED calibration ageometry, run summary table, DAQ, fiber mapping, VLPC LED calibration a

nd analysisnd analysis many thanks to A. Horikoshi to provide geometry information, LED calibratimany thanks to A. Horikoshi to provide geometry information, LED calibrati

on results, run summary and so on.on results, run summary and so on. Detailed analysis is underwayDetailed analysis is underway

Analysis based on G4MICE will be performed.Analysis based on G4MICE will be performed.

http://133.1.141.121/~yoshida/MICE/T585/index.html


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Thank you, all participants !Thank you, all participants !

Documents

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida 1 KEK Beam Test for MICE SciFi Tracker - KEK-PS T585 - M. Yoshida MICE CM@RAL 2005/10/24 2005/10/24