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R&D status of TiCAL at Korea

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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R&D status of TiCAL at Korea

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  1. R&D status of TiCAL at Korea 2004/2/21 Calorimeter meeting Donghee Kim Youngdo Oh Kyungpook National University

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

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