RPC docs

• Resistive Plate Chambers chapter in Muon TDR
  • Barrel
    • Physics requirements demand that in each station the strips, running always along the beam direction, be divided into two parts for stations MB1, MB3 and MB4. Station MB2, which represents a special case for the trigger algorithm, will have strips divided into three parts.
    • For each double-gap 96 strips will be read out.
  • Endcap

(sw) Geometry

• Visualization Offline Guide
• http://cmslxr.fnal.gov/lxr/source/DetectorDescription/Parser/test/dumpDDCompactView.cpp
• RPCDetId.h
  • Region id:
    • 0 for Barrel
    • +/-1 For +/- Endcap
  • Ring id:
    • Barrel: Wheel number from -2 to +2
    • Endcap: Ring Number from 1 to 3
    • Ring has a different meaning in Barrel and Endcap! In Barrel it is wheel, in Endcap it is the physical ring located on a disk (a disk contains three rings). In Endcap the ring is the group of chambers with same r (distance of beam axis) and increasing phi
  • Station id :
    • Barrel: the 4 groups of chambers at same r (distance from beam axis) and increasing phi
    • Endcap: the 3 groups of chambers at same z (distance from interaction point), i.e. the disk
  • Sector id:
    • the group of chambers at same phi (and increasing r)
  • Layer id: each station can have two layers of chambers: layer 1 is the inner chamber and layer 2 is the outer chamber (when present). Only in Barrel: RB1 and RB2.
  • SubSector id : some sectors are divided along the phi direction in subsectors
    • Barrel: from 1 to 4
    • Endcap: from 1 to 6
  • Roll (also known as eta partition) id: each chamber is divided along the strip direction in
    • Barrel: 2 or 3 parts (rolls)
    • Endcap: 2,  3 or 4 parts

Misc

• Each LB reads 96 strips of one η partition (1 roll = half RPC)

Geant4 and GDML

• GDML Home, having link to Getting started

-- NikolayDarmenov - 27 Jan 2009