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 2005/10/ /10/24

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida2 Contents KEK-PS T585 setup KEK-PS T585 setup Beam properties Beam properties SciFi tracker (quick) analysis SciFi tracker (quick) analysis

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida3 Tracker prototype test in KEK KEK-PS T585 MICE SciFi tracker group planed testing prototype to check basic performance in 1 Tesla solenoid magnet. MICE SciFi tracker group planed testing prototype to check basic performance in 1 Tesla solenoid magnet. KEK-PS T585 was performed in Sept. – Oct by world-wide collaboration. KEK-PS T585 was performed in Sept. – Oct by world-wide collaboration. Participants: more than 20 people joined. Participants: more than 20 people joined. M. Yoshida, K. Yoshimura, H. Sakamoto, A. Horikoshi, K. Sakai, Yoshi Kuno, A. Sato and several students M. Yoshida, K. Yoshimura, H. Sakamoto, A. Horikoshi, K. Sakai, Yoshi Kuno, A. Sato and several students Aron. Fish, Roger. Hare, K. Long, M. Ellis Aron. Fish, Roger. Hare, K. Long, M. Ellis Amit Klier, Kwame. Bowie, Xiofeng Yang, Alan Bross, P. Rubinov Amit Klier, Kwame. Bowie, Xiofeng Yang, Alan Bross, P. Rubinov J.S. Graulich J.S. Graulich KEK-PS  2 beamline

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida4 T585 Setup A. Horikoshi 1-Tesla SC solenoid magnet

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida5 Aerogel Cherenkov Counter Refractive index : n=1.05 Refractive index : n= blocks x (100mmx98mmx11mm) 7 blocks x (100mmx98mmx11mm) Reflection in Al case with Goretex Reflection in Al case with Goretex Sensitive to muons of MeV/c Sensitive to muons of MeV/c 95% muon eff. 5% pion contamination 95% muon eff. 5% pion contamination

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida6 Experimental Hall / T1 / ACC T1 ACC

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida7 4-Station Tracker Prototype BEAM VLPC 2 cassette 2048 ch internal waveguide 120cm External waveguide 400cm Old waveguide 400cm

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida8 Tracker installation

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida9 TOF setup 2.5inch finemesh PMT (R6504S) 2.5inch finemesh PMT (R6504S) Light guide Light guide Scintillater Scintillater TOF 1 →5 TOF 6  10 PMT A PMT B PMT APMT B 40 cm 53 cm 5+5 hodoscope (2cm thick + 2cm thick)

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida10 DAQ VME ADCs/TDCs for beam counters VME ADCs/TDCs for beam counters VLSB (VME LVDS SERDES BUFFER) for VLPC VLSB (VME LVDS SERDES BUFFER) for VLPC Trigger logic on NIM Trigger logic on NIM A lot of delay cable A lot of delay cable Linux-PC/Windows-PC with Bit3 interface Linux-PC/Windows-PC with Bit3 interface Hardware check with test program on Windows-PC Hardware check with test program on Windows-PC Slow control (AFE initialization, Bias setting, Temperature control) and readout of VLSB is done by standalone program, “ VLPCdaq ” on Lunux-PC Slow control (AFE initialization, Bias setting, Temperature control) and readout of VLSB is done by standalone program, “ VLPCdaq ” on Lunux-PC Integrated DAQ for beam counters and VLPC in the framework of UniDAQ on Linux-PC Integrated DAQ for beam counters and VLPC 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 readout GUI controller to select detectors to be readout Switch to select run mode Switch to select run mode beam / pedestal / LED beam / pedestal / LED

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida11 History of T Feb / May : KEK beam test for TOF / ACC R&D 2005.Feb / May : KEK beam test for TOF / ACC R&D 2005.Aug. 24 : VLPC system was delivered to KEK Aug. 24 : VLPC system was delivered to KEK. Cryostat commissioning Cryostat commissioning Keep cooling until Oct. 7 Keep cooling until Oct. 7 Sept : test bench for DAQ/Trigger logic setup. Sept : test bench for DAQ/Trigger logic setup. Sept. 20 : Remove USHIWAKA magnet and cleanup  2 area Sept. 20 : Remove USHIWAKA magnet and cleanup  2 area Sept Sept Set the solenoid magnet Set the solenoid magnet investigate fiber mapping on the 4 th station of tracker investigate fiber mapping on the 4 th station of tracker Install the tracker Install the tracker Install TOF, ACC and beam counters. Install TOF, ACC and beam counters. Sept. 27 : Accelerator tuning started Sept. 27 : Accelerator tuning started Sept. 28 – Oct. 1 : Started setting VLPC, checking pedestal, test charge injection Sept. 28 – Oct. 1 : Started setting VLPC, checking pedestal, test charge injection 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 party Sept. 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 beam Oct. 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 in the experimental area. 5pm on Oct. 7 : data taking ended. immediate removal of all equipment in the experimental area. End-Run party at Sutamina-TARO: buffet of meat, SUSHI, and many kinds of food. End-Run party at Sutamina-TARO: buffet of meat, SUSHI, and many kinds of food.

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida12 DATA Set VLPC LED VLPC LED Magnet ON / OFF Magnet ON / OFF 1 Tesla solenoid 1 Tesla solenoid Beam momentum Beam momentum 3 GeV/c 3 GeV/c 0.25 – 0.4 GeV/c 0.25 – 0.4 GeV/c Rotation Rotation 0 / 3 deg. / 6 deg. 0 / 3 deg. / 6 deg. Al target just upstream tracker to produce multi- track Al target just upstream tracker to produce multi- track

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida13 Light yield in ACC  = 277 cnts  = 49 cnts 3 GeV/c   After-pulse in High-gain PMT causes the tail 10 fine-mesh PMTs surrounded Aerogel block 10 fine-mesh PMTs surrounded Aerogel block Large light yield in Aerogel with refractive index of n=1.05 Large light yield in Aerogel with refractive index of n=1.05 Ability to distinguish muons against electron/pion background Ability to distinguish muons against electron/pion background

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida14 Time of flight (ps) Light yield in ACC (ADC cnts) Particle identification by TOF & ACC Good PID performance for e  Good PID performance for e  400MeV/c e  

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida15 Timing resolution of TOF counter After slewing correction After slewing correction  (TOF8-T1)=74ps  (TOF8-T1)=74ps  (T1)=45ps  (T1)=45ps   (TOF8)=60ps   (TOF8)=60ps TOF TOF8-T ps  = 74ps Run1255, -3GeV/c

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida16 Timing resolution of TOF counters Difference in two tests TDC: CAMAC (28 ps resolution)  VME CAEN V1290 (25 ps) TDC: CAMAC (28 ps resolution)  VME CAEN V1290 (25 ps) ADC: CAMAC (0.6 pC/count)  VME CAEN V792 (0.1 pC/cnt) ADC: CAMAC (0.6 pC/count)  VME CAEN V792 (0.1 pC/cnt) Combination of horizontal and vertical counters   < 50ps May test (KEK-PS T571) This test (KEK-PS T585)

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida17 Timing resolution of TOF hodoscope Hodoscope = Combination of Horizontal and Vertical counters Hodoscope = Combination of Horizontal and Vertical counters  (hodoscope-T1)=60ps  (hodoscope-T1)=60ps  (T1)=45ps  (T1)=45ps  (Hodoscope)=40ps  (Hodoscope)=40ps (Average of horizontal and vertical TOF counters) -T ps  = 60 ps

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida18 Time of flight measurement for various momentum good  separation > 3  good  separation > 3  Can measure: Can measure: muon fraction in beam muon fraction in beam beam momentum from timing difference of e-  & e-  beam momentum from timing difference of e-  & e-  e e e e      2000ps2000ps 2000ps 2000ps

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida19 Measured beam momentum by TOF 303 MeV/c 310 MeV/c 376 MeV/c 386 MeV/c 229 MeV/c 234 MeV/c Beam momentum is measured to be quite stable within a few MeV/c for the setting of 250MeV/c – 400 MeV/c 5 MeV/c7 MeV/c 10 MeV/c 3 deg RUN#

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida20 Analysis on Tracker LED calibration LED calibration Photon yield Photon yield 2D Tracking 2D Tracking Fiber Alignment Fiber Alignment 3D Tracking 3D Tracking Reconstruct spiral track in solenoid magnet Reconstruct spiral track in solenoid magnet

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida21 VLPC gain calibration Gain is estimated by gaussian fitting on LED data Gain is estimated by gaussian fitting on LED data AFE board #106 MCM #1 Channel #1 pedestal 1 p.e. AFE board #107 MCM #1 Channel #1 ~ 8 cnts/p.e.

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida22 DEAD CHANNEL VLPC dead (estimated by LED run) VLPC dead (estimated by LED run) AFE board# 104: ? channels AFE 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 run) “ Fiber dead ” (estimated by normal run) NOT YET STUDIED.... NOT YET STUDIED....

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida23 Photon signal of SCIFI Raw signal converted into photo electron after subtracting common mode RUN# 1255 B=0T, Rotation=0deg, B=0T, Rotation=0deg, w/o diffuser w/o diffuser We are checking light yield in selected fibers on reconstructed track for each station / each view 10 p.e.20 p.e.

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida24 2D TRACKING HIT HIT Fibers over 2.5 p.e. Fibers over 2.5 p.e. FITTING FITTING Minimum chi-square fit Minimum chi-square fit X view : y position Yx X view : y position Yx V view : x position Xuv crossed with X view V view : x position Xuv crossed with X view W view: x position Xuw crossed with W view W view: x position Xuw crossed with W view #1#2#3#4 X VIEW V VIEW W VIEW X Y XuvXuw Yx BEAM

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida25 VIEW alignment in a Station X position Xw X position Xv X VIEW V VIEW W VIEW XvXw Good agreement within V- view and W-view  good fiber sheet arrangement on the station

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida26 MAPPING/ FIBER ALIGNMENT Fiber # (station 1) Fiber # (station 2) After some bug-fix on mapping..... Fiber # (station 1)  fiber # (Station2-Station1) Consistent with beam divergence, but still need to carefully check on every combination of the stations

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida27 3D TRACKING HIT HIT Fibers of maximum light yield Fibers of maximum light yield FITTING FITTING Circular fitting Circular fitting #2#3 #4 BEAM #1#1

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida28 RECONSTRUCTED EVENT 240 MeV/c  by TOF RUN# 1320 B=1T, Rotation=6deg., w/o diffuser B=1T, Rotation=6deg., w/o diffuser

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida29 Summary KEK-PS T585 has been performed successfully by world-wide collaboration, to check basic property of the SciFi tracker in 1-Tesla magnetic field. KEK-PS T585 has been performed successfully by world-wide collaboration, to check basic property of the SciFi tracker in 1-Tesla magnetic field. Integrated DAQ for beam counters and 2048 ch VLPC readout works well Integrated DAQ for beam counters and 2048 ch VLPC readout works well but slow ~50Hz …  will need event buffering in MICE but slow ~50Hz …  will need event buffering in MICE 4-Station SciFi tracker prototype works well 4-Station SciFi tracker prototype works well Successful tracking in magnetic field ! Successful tracking in magnetic field ! light yield is under estimate light yield is under estimate The information of T585 has been collected in the web page The information of T585 has been collected in the web page geometry, run summary table, DAQ, fiber mapping, VLPC LED calibration and analysis geometry, run summary table, DAQ, fiber mapping, VLPC LED calibration and analysis many thanks to A. Horikoshi to provide geometry information, LED calibration results, run summary and so on. many thanks to A. Horikoshi to provide geometry information, LED calibration results, run summary and so on. Detailed analysis is underway Detailed analysis is underway Analysis based on G4MICE will be performed. Analysis based on G4MICE will be performed.

2005/10/24 MICE CM at RAL, KEK test beam, Makoto Yoshida30 Thank you, all participants !