KEK Test BeamKEK Test BeamPhase II PlanPhase II Plan

Makoto YoshidaMakoto Yoshida(Osaka Univ.)(Osaka Univ.)

MICE FT workshop @ DaresburyMICE FT workshop @ Daresbury2005/8/302005/8/30

Layout of T585Layout of T585

Step 1Step 1

High momentum parallel beam wHigh momentum parallel beam without magnetic fieldithout magnetic field

Check light yieldCheck light yield 3HF dependence3HF dependence

2500 ppm / 5000 ppm on the 2500 ppm / 5000 ppm on the 44thth station station

Angle dependenceAngle dependence Dead channel (efficiency)Dead channel (efficiency) Cross talk between fibers / viewCross talk between fibers / view

ss Position alignmentPosition alignment

Station alignmentStation alignment fiber alignment on stationfiber alignment on station

High speed DAQ ~1kHz is necesHigh speed DAQ ~1kHz is necessarysary

Step 2Step 2

With solenoid magnetic fieldWith solenoid magnetic field Study tracking performanceStudy tracking performance

Defocused beam in Defocused beam in 30cm30cm Low momentum beam 0.2 – 0.6 GLow momentum beam 0.2 – 0.6 G

eV/ceV/c Select muons by TOF/ACCSelect muons by TOF/ACC

Measure muon momentum by TOFMeasure muon momentum by TOF T1T1=50ps, =50ps, hodoscopehodoscope=60ps =60ps TOFTOF=6=6

6ps6ps 300 MeV/c 300 MeV/c dp/p = 1.7% dp/p = 1.7% 400 MeV/c 400 MeV/c dp/p = 2.8% dp/p = 2.8% DifficultiesDifficulties

decay in flightdecay in flight path length on spiral track in magnpath length on spiral track in magn

etic fieldetic field energy lossenergy loss

Preparation worksPreparation works

TOFTOF Establish calibration / online monitoring scheme Establish calibration / online monitoring scheme Improve support structure for easy manipulationImprove support structure for easy manipulation

ACCACC Establish calibration with LEDEstablish calibration with LED

gain monitoring in beam timegain monitoring in beam time

DAQDAQ temperature monitor loggingtemperature monitor logging AFE slow controlAFE slow control Quick VLSB readoutQuick VLSB readout

Time lineTime line July, 2005July, 2005

KEK-PS T585 has been approved for 1 week beam time (20 shifts) at KEK-PS KEK-PS T585 has been approved for 1 week beam time (20 shifts) at KEK-PS 2 beam line2 beam line Aug. 24Aug. 24thth

Start to prepare VLPC Cryostat in Start to prepare VLPC Cryostat in 2 experimental area2 experimental area Successful operation of CryocoolerSuccessful operation of Cryocooler

Reach 7KReach 7K Sep. 1Sep. 1stst

Infrastructure in Infrastructure in 2 area2 area Stable operation of CryostatStable operation of Cryostat

Sep. 5Sep. 5thth

Slow control by LinuxSlow control by Linux AFE initializationAFE initialization Temperature controlTemperature control

VLSB readout in UniDAQ frameworkVLSB readout in UniDAQ framework Around Sep. 12Around Sep. 12thth

Cosmic-ray testCosmic-ray test establish trigger schemeestablish trigger scheme test DAQ systemtest DAQ system

Around Sep. 21Around Sep. 21thth

Place solenoid magnetPlace solenoid magnet Move Cryostat beside solenoidMove Cryostat beside solenoid

Sep. 27Sep. 27thth – Sep. 30 – Sep. 30thth

Accelerator tuningAccelerator tuning Sep. 30Sep. 30thth

Start physics runStart physics run Could be delayed to Oct. 3rd, if accelerator needs more tuningCould be delayed to Oct. 3rd, if accelerator needs more tuning