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Discussion on Geometries

Discussion on Geometries. Christian Grah. FCAL Collaboration Workshop TAU, September 18-19, 2005. Coordinate systems. Coord.-System1: Geant3 like (Brahms):. Coord.-System 2: Geant4 like (Mokka):. Positions/Geometries. Center Lumi- and BeamCal on outgoing beam. LumiCal: ± 3.05cm

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Discussion on Geometries

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  1. Discussion on Geometries Christian Grah FCAL Collaboration Workshop TAU, September 18-19, 2005

  2. Coordinate systems Coord.-System1: Geant3 like (Brahms): Coord.-System 2: Geant4 like (Mokka): Ch.Grah: Backgrounds

  3. Positions/Geometries • Center Lumi- and BeamCal on outgoing beam. • LumiCal: ±3.05cm • BeamCal: ±3.65cm (z=370 is also used) • Angular Coverage: • LumiCal: 8(13) to 28cm26(43) to 92 mrad • BeamCal: 1.5(2) to 10(16)cm4(5) to 28(44) • Option: misplace BeamCal and keep aperture small...how to prevend dead area? Ch.Grah: Backgrounds

  4. BeamCal Segmentation 45/60° calo segment (nseg=8/6) using 360-opening angle/nseg for 20 mrad Ch.Grah: Backgrounds

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