Report from CALICE meeting

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Report from CALICE meeting CERN
9/23-23/2002 Andy White Web Site for
meeting http//polywww.in2p3.fr/tesla/ agenda_CA
LICE_23090.html
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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.
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READOUT for Tile Cal. I.Polak (Prague) APD
Hamamatsu S8550 Gain 100 390 (_at_400V), dark
current 10nA V.Korbel(DESY) MAPT(Hamamatsu
8711) compare with S8550, SiPMT, S8550 Q.E.
82, pixel 1.6 x 1.6 mm2, G100-500,
350V SiPMT(MEPHI) Q.E. 12-15, 1. x 1. mm2,
500nm, G 2E6 SiPMT(Obnitsk) results same as
MEPHI.
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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, 1st 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.
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ECAL Session Y. Arestov (IHEP) Tungsten plate
measurements, direct meas. to few ?m. Radiation
meas. of X0s 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, 1st version of PCB/FE
11/15/02. O.Kvasnicka (Prague) Si wafers
pre-production sensors made. 300 wafers.
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• 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.

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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
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Simulation D.Ward (Cambridge) MOKKA/G3/Fluka
TDR Geom results for single particles (2,5,15 GeV
e,?,? ). Compare with G4 -gt G4 has many more low
energy hits generated by ?-rays. Found that
G3G4 when ?-rays turned on. N.Watson
(Birmingham) MOKKA/Fluka for comparison of TB
implementation. Want FlukaG4. FLUGG project
(ATLAS) ATL-SOFT-98-039. FLUGG/Fluka
implementation checked identical results.
Complete study 11/02.
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• 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 -gt ZH(140) -gt ??H 1000 ev., 500 GeV
• W/Si ECAL, RPC HCAL.
• Photon recon. -gt purity of photon finding 93.5

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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