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Report from CALICE meeting CERN 9/23-23/2002 Andy White Web Site for meeting: agenda_CALICE_23090.html.

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Presentation on theme: "Report from CALICE meeting CERN 9/23-23/2002 Andy White Web Site for meeting: agenda_CALICE_23090.html."— Presentation transcript:

1 Report from CALICE meeting CERN 9/23-23/2002 Andy White Web Site for meeting: http://polywww.in2p3.fr/tesla/ agenda_CALICE_23090.html

2 HCAL Session Tile/Fiber V.Korbel (DESY) – many options being explored: Many new results (DESY 1-3 GeV e beam) BC408 + Y11 + 3M Super Radiant best option SC306 (Russian) scint ~70% of BC408, but much cheaper! Looking at – fiber heat splicing, #WLS fibers, machined multitile plates, tile groove depth, fiber end treatment.

3 READOUT for Tile Cal. I.Polak (Prague) – APD Hamamatsu S8550 Gain ~ 100 – 390 (@400V), dark current ~10nA V.Korbel(DESY) – MAPT(Hamamatsu 8711) – compare with S8550, SiPMT,… S8550 – Q.E. ~ 82%, pixel 1.6 x 1.6 mm 2, G~100-500, ~350V SiPMT(MEPHI) – Q.E. ~ 12-15%, 1. x 1. mm 2, 500nm, G ~ 2E6 SiPMT(Obnitsk) – results same as MEPHI.

4 J.Repond (ANL) – plan to provide section of DHCAL in 2004. RPC borrowed from Fermilab, 1.5-4.0% crosstalk, comics/large pads. Ready to build chambers at ANL, postdoc assigned, 1 st RPC meeting 11/1/02 at ANL. V.Ammosov (IHEP) – will use “standard” design, thickness 4.5 – 6.5 mm, with 1.2 mm gas gap. A.White (UTA) – DHCAL/GEM report, questions raised: costs of foil production, electronics layer. [GEM – meeting with F.Sauli: foils – 3M Austin, TX discussion on production, sealed GEM concept OK, learned several valuable things on etching process.]

5 ECAL Session Y. Arestov (IHEP) – Tungsten plate measurements, direct meas. to few  m. Radiation meas. of X 0 ’s using radiation (takes ~1 day/plate). J-C.Brient (LLR) – ECAL mechanics well developed, ready for TB end of 2003. J.Fleury (LAL) – front-end for ECAL prototype, 1 st version of PCB/FE 11/15/02. O.Kvasnicka (Prague) – Si wafers – pre-production sensors made. 300 wafers.

6 Test Beam(s) Much discussion of where/when/how./… throughout the meeting: - NO beams at CERN 2005-2006 - Rush to test modules in 2004 – CERN?, DESY (e - ), IHEP (1-20 GeV h,  ; 1-5 GeV e - ) - Test ECAL +HCAL(s) - 2005-6 Fermilab, BNL?? Jose to follow-up with Gene Fisk (Fermilab). - J-C.Brient – need one analog, one digital approach for TB, do not mix technologies.

7 Probable line-up: 2004 – CALICE Si/W ECAL - DESY Tile Cal (38 layers) - ANL RPC (full depth?) - + ?? (US Tile?) 2005-6 – GEM DHCAL stack - US Tile Cal - ANL RPC stack Paul Dauncey (ICL) - DAQ + trigger for TB ? Seven months to build trigger board…

8 Simulation D.Ward (Cambridge) – MOKKA/G3/Fluka + TDR Geom results for single particles (2,5,15 GeV e, ,  ). Compare with G4 -> G4 has many more low energy hits – generated by  -rays. Found that G3=G4 when  -rays turned on. N.Watson (Birmingham) – MOKKA/Fluka for comparison of TB implementation. Want Fluka+G4. “FLUGG” project (ATLAS) ATL-SOFT-98-039. FLUGG/Fluka implementation checked – identical results. Complete study 11/02.

9 J-C.Brient (LLR) – MOKKA – NEW Cal hits format, added PDG particle type. Common Geometry Access. Simple event display. VXD added (RAL). TPC added + Si Intermediate tracker + forward tracker. A.Sokolov(LLR/IHEP) – REPLIC (Reconstruction Package for LC). -track finder, photon finder, neutral hadron finder, lepton i.d. -e - e + -> ZH(140) -> H 1000 ev., 500 GeV W/Si ECAL, RPC HCAL. Photon recon. -> purity of photon finding 93.5%

10 Meetings ECFA-DESY Prague 11/15-18/02 ALCPG U.Texas at Arlington 1/9-11/02 CALICE DESY? PARIS? (not CERN!) end of 1/02

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