Future Beam Test Plansof the GLD Calorimeter

Aug-6 2007 　学術創成会議Satoru Uozumi (Shinshu)

for the GLD calorimeter group

We are planning to have two beam tests :1. at KEK new beamline at Nov 20072. at Fermilab in 2008 summer

3 Types of Modules

① WLSF readout

13 layers ② Direct readout

13 layers

③ WLSF readoutby extrusion technique

13 layers

Beam F R

② ① ③ ①① ②

13 + 13 layers

Beam position (mm)Sig

nal (

AD

C c

ount

s)

Fiber readout Direct readout Extruded scint.

Response uniformity of 3 differenttypes of scintillators

MPPCBeam

Layer #

Strip #

Response for MIP(DESY beam test data)

Fiberreadout extruded

Hole size

Why the extruded scintillator showssuch low light yield and non-uniformity?

Main objectives of the KEK beam test

• Check performance of various scintillator strips using the high energy beam

– Evaluate light yield, response uniformity, variation– Compare characteristics of 3~4 different scintillators– Need to establish extruded scintillator strips for next

ECAL prototype beam test in 2008 at FNAL

Fuji new test beam line(http://fujibeam.kek.jp)

ExperimentalStage (7 x 4 m)

• Electron beam line• p = 0.5 – 3.4 GeV/c, p/p = 0.4 %• Rate ~ 200 Hz @ 3 GeV• Spot size = +- 1cm• Currently magnet setup is ongoing• Start comissioning on Sep• Available periods:

• Nov-Dec 2007• Feb-Mar 2008

KEK Beam Test Plan (tentative)

• MIP scan of the scintillator strips• MPPC signal are read by CAMAC ADC• Tracking with Sci-Fi tracker (position resolution ~ 1mm)• 2-3 people from KNU (Korea), 2-3 from Japan• Very tentative schedule :

– ~ 3 days for setup (need 1-2 days access to beamline)– ~ 3 days for beam run (including 1 day commissioning)– ~ 1 day for withdrawal

Stripscintillators

Beam

Sci-Fi trackers

Trigger counters

2008 summer : The FNAL beam test

• Establish the Scintillator-strip ECAL– Evaluate all the necessary performances using various beams (,K,e,….) with wider energy range– Make the SCECAL ready for the engineering design

• Combined test with the Analog HCAL• Test 0 -> 2 reconstruction• Measure hadron shower to test simulation model

– Compare the result with various models– Precise hadron simulation will help study of PFA

The 2nd SCECAL module

MPPC R/O

• (At least) 4 times larger than the DESY BT module.

(Still need simulation study to determine the module size, depth, strip size)

• Fully adopt extruded scintillators• Expect several thousand channel

s

Beam test related Jobs for mid-term• Collect information about FNAL beam test facility (always)

– Kawagoe, Takeshita, Uozumi• Beam test simulation based on Mokka or simple G4 framework (fall~winter)

– Simulate SCECAL performance, 0 reconstruction test– Takeshita (for old G4 framework to check position dependence of light yield)– Nishiyama, Ueyama with support of other people

• Establish extruded scintillator (within this year)– KNU guys + Nishiyama for measurement in Japan

• Perform a beam test in November at KEK– Manpower from Kobe, Shinshu, Tsukuba, KNU (need to discuss at next Japan-Korea meeting)– Check Sci-Fi detector, if necessary repair or remake (Takasaki etc.)

• R&D of MPPC readout cable (~fall, Uozumi, Nishiyama)• Mechanical design and test of the entire module construction (Uozumi, Nishiyama)• Establish gain and temperature monitoring system (this year, Kobe)

– Test LED light distribution system with acryl bar and fibres (Ikeda)– Mechanical assembly of the system (Kobe, Shinshu)– Learn CANbus operation (Kaneko , Ikeda)

• MPPC mass measurement (system construction in this year)– Tokyo? Need discussion

• MPPC R&D (always)– Tsukuba, Tokyo, Shinshu

• Feedbacks from the DESY beam test analysis (Satoru, Daniel)

Summary

• We will perform the two beam tests:–KEK beam test at Nov. 2007 to establish extruded scintillators–FNAL beam test at summer 2008 to establish scintillator-strip ECAL

• Works are ongoing toward the beam tests among all the group members.