cal20050303

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Published on October 9, 2007

Author: Jolene

Source: authorstream.com

GLD Calorimetry:  GLD Calorimetry 2005/Mar/03 K. Kawagoe / Kobe-U Introduction:  Introduction Current design To be optimized for Particle Flow Algorithm (PFA) aiming at 30%/sqrt(E) resolution for jets ECAL: W/Scinti with SiPM analog readout HCAL: Pb(Fe)/Scinti with SiPM (semi-) digital readout Other options ? SiW ?? (no manpower…) The “GLD” model under consideration:  The “GLD” model under consideration SiVTX pixel (cold version) m HCAL (Pb(Fe)/scinti or digital) W/Scinti ECAL TPC (Jet chamber as option) Si intermedi.-Trk SC-coil SiVTX pixel m Pb/scinti HCAL Pb/Scinti ECAL Jet chamber Si intermedi.-Trk SC-coil “GLC” design (ACFA) “GLD” (world-wide) Slide4:  Area of EM CAL (Barrel + Endcap) SiD: ~40 m2 / layer TESLA: ~80 m2 / layer GLD: ~100 m2 / layer (GLC: ~130 m2 /layer) GLD ~2.1m Comparison of size of EM CAL surface Layout of scintillator layers:  Layout of scintillator layers We have an experience of Strip-array ECAL (20cm x 1cm) Small tile ECAL (4cm x 4cm) Ghost clusters from strip-array layers would be easily removed with additional small-tile layers (effective cell size 1cm x 1cm). This idea SHOULD be well confirmed by full simulation studies. If NOT, we would need ECAL with smaller tiles (2cm x 2cm or less ?) Strip & Tile CAL can be achieved with SiPM readout (directly attached to WLS fibers) . Common layout for ECAL and HCAL:  Common layout for ECAL and HCAL Number of readout channels:  Number of readout channels With 20cm x 1cm strips and 4cm x 4cm tiles ECAL prototype 650 analog readout channels Calorimetry for the real detector ECAL: ~2.0M analog readout channels. HCAL: ~5.5M (semi-)digital readout channels A big challenge !! Number of channels could easily change the order depending on the strip/tile size. R&D issues:  R&D issues Design optimization (scintillator shape and size) to remove “ghost” clusters to match tracks and clusters for particle flow algorithm Photo-sensors (SiPM) Readout electronics Gain monitoring system Mechanical structure Possible schedule (as of Sep. 2004, very very preliminary):  Possible schedule (as of Sep. 2004, very very preliminary) 2004-2005 Design optimization R&D of SiPM (DPPD) R&D of readout electronics 2005-2006 Construction of an ECAL test module Tests with cosmic-rays 2006-2008 Test beam studies of the ECAL test module “standalone” Test beam studies in combination with CALICE HCAL Simulation studies:  Simulation studies Jupiter simulation Weekly acfa-sim-j TV meeting CAL and MUD structures are implemented. Ready for physics studies ? Study of particle flow algorithm (S. Yamamoto) G4 Simulation with simple structure Energy resolution by M.C. Chuan (Tohoku) Strip-array ECAL (Tsukuba) DigiCAL simulation (Shinshu) Clustering/particle flow algorithm (Kobe) Hardware studies:  Hardware studies Scintillator strips/tiles Being studied in Niigata SiPM Being developed in Hamamatsu Being tested in Niigata and Kobe Readout electronics Being designed by M. Tanaka at KEK Mon power in Japan:  Mon power in Japan Japanese staffs KEK (J. Kanzaki) Kobe U. (K. Kawagoe) Konan U. (F. Kajino) Niigata U. (H. Miyata) Shinshu U. (T. Takeshita) Tsukuba U. (S. Kim, H. Matsunaga) No core staffs at KEK Problem in keeping activity Problem in getting budget from KEK Budget crisis in FY2005:  Budget crisis in FY2005 No money for CAL R&D via KEK ILC group Because we have no core staffs at KEK Japan-US program failed for CAL R&D (Partly) because we have no core staffs at KEK We currently have Kakenhi (Takeshita, 2004+2005) KEK Collaborative development research (Takeshita, 2004+2005) Japan-Germany joint project (CAL+TPC, travel money, 2005+2006) We are applying / going to apply Several Kakenhi proposals Japan-Russia joint project (with JINR) Japan-Korea joint project ?? International collaborations:  International collaborations Korea Kyungpook National U. (K. Cho, D.H. Kim, Y.D. Oh, J.S. Suh) Seoul National U. (S. Kim ) SungKunKwan U. (I. Yu) Monthly Japan-Korea TV meeting (2005 Feb ~ ) Japan-Korea CAL meeting in Daegu (2005 July) They are going to make their own EM prototype W-plates, Scintillator, SiPM, electronics CAL simulation with Mokka Russia JINR (P. Evtukhovitch, et al.) Peter will visit Japan for 2 months in 2005. ISTC3000 failed. Planning to apply a new proposal to ISTC. Applying to the new Japan-Russia joint project (JSPS) Good relation with CALICE Communication with Analog HCAL group at DESY Tsukuba DC for SiW ECAL beamtest at DESY (2005 Feb ~, a half year) Japan-Germany joint project approved (2005+2006, CAL + TPC) Japan-France joint project ? CAL-related talks at LCWS05:  CAL-related talks at LCWS05 From Japan H. Miyata: R&D of calorimeter using striplet/cube scintillators with SiPM T. Takeshita: Progress of photosensors for scintillator H. Matsunaga: Simulation study of scintillator-based calorimeter N. Nakajima: Correlation matrix method for Pb/Scinti sampling calorimeter T. Takeshita for M. Tanaka: Electronics for scintillator-based calorimeter (title to be confirmed) From Korea D.H. Kim: The status of the scintillator-based calorimetry R&D activities in Korea S. Nam: CERN beam test of Silicon-Tungsten calorimeter test module Summary:  Summary Our default calorimeter design ECAL W+Scinti+SiPM, analog readout HCAL Pb(Fe)+Scinti+SiPM, (semi-)digital readout R&D issues Design optimization Scinti./SiPM Readout electronics Gain monitoring Mechanical structure Schedule Test beam for ECAL prototype in 2006 ? International collaborations growing Lack of Core staffs at KEK Budget for prototype/test beam

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