Discussion on Geometries
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Transcript of Discussion on Geometries
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Discussion on GeometriesDiscussion on Geometries
FCAL Collaboration Workshop TAU, September 18-19, 2005
Christian Grah
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9/19/2005 Ch.Grah: Backgrounds 2
Coordinate systemsCoordinate systems
Coord.-System 2:Geant4 like (Mokka):
Coord.-System1: Geant3 like (Brahms):
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9/19/2005 Ch.Grah: Backgrounds 3
Positions/GeometriesPositions/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 28cm
26(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?
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9/19/2005 Ch.Grah: Backgrounds 4
BeamCal SegmentationBeamCal Segmentation
45/60° calo segment (nseg=8/6)
using 360-opening angle/nseg for 20 mrad