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R&D status of TiCAL at Korea. 2004/2/21 Calorimeter meeting. Donghee Kim Youngdo Oh Kyungpook National University. Overview of Current Status. Survey almost done SiPM fabrication, Scintillator, W/W-Ni SiPM/Tile R&D has been just started Simulation is going on New collaborators

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slide1

R&D status of TiCAL at Korea

2004/2/21

Calorimeter meeting

Donghee Kim

Youngdo Oh

Kyungpook National University

slide2

Overview of Current Status

  • Survey almost done
    • SiPM fabrication, Scintillator, W/W-Ni
  • SiPM/Tile R&D has been just started
  • Simulation is going on
  • New collaborators
  • Seoul National University : Prof. Soobong Kim
  • SungKyunKwan University : Prof. Intae Yu
slide3

R&D status and plan

  • SiPM
    • Preparation design and process during next semester
    • - simulation of electric field in Geiger and drift region
    • - wafer and mask
    • - fabracation process
    • Try to make sensor chip using FAB facility at ETRI.
    • ETRI : Electronics and Telecommunications Research Institute
  • Scintillator
    • The 1st scintillator bars for R&D purpose expect to be produced
    • during next semester
    • Make sure right chemical procedure
    • Compare light yield with existed scintillator bar
    • Design of scintillator for LC prototype will be underway
  • Simulation
    • 4 cpu (43GHz) and 1.2TB RAID storage allocated.
    • Mokka and susygen 3.0 installed
    • SUSY simulation under Mokka
    • neutralino pair production from e+e- collision
    • Simulation of prototype started
slide4

Simulation of TiCAL prototype using Geant4

  • Structure

Absorber : 200mm * 200mm * 3mm

Scintillator : 200mm * 200mm * 2mm

(We simulated plate, not strip yet)

 30 layers ( ~26 X0 )

  • Absorber

pure W ( density = 19.3g/cm3) : simulaion done

alloy W-Ni (W:Ni = 95:5) (density=18.7g/cm3) : simulation done

alloy W-Pb (W:Pb = 90:10) (density=18.5g/ cm3) : simulation going on

  • Effective Molier Radius from Simulation

W : ~18.9mm

W-Ni : ~19mm

: almost the same

slide5

Energy Resolution

%

%

W-Ni

W

Energy(GeV)

Energy(GeV)

  • Electron energy = 1, 5, 10, 20, 50, 80, 100, 200 GeV
  • Cut range : 0.001 mm

W : (15.2  0.3)/sqrt(E) + (0.13  0.12)

W-Ni : (13.4  0.7)/sqrt(E) + (0.16  0.29)

W-Ni’s energy resolution is better than W’s in region.

: W-Ni is less dense, so more energy is deposited in scintillator

slide6

What to do : next simulation

  • Simulation for the thickness of scintillaor = 25 , 30mm

Simulation for alloy with different ratio for W:Pb and W:Ni

 Optimize the ratio of thickness for Absorber and Scin

and absorber material.

  • Simulation for scintillator strip
  • Jupiter and Physics simulation

Possible target for physics simulation is SUSY

- parameter scan

- produce generator data in format of HEPEVT