Simulations of the Crack Region at Eta=3.2
(in the frame of ATLAS)

To understand the performance of the system of ATLAS calorimeters in the region around crack at pseudorapidity of 3.2, the combined test of EMEC, HEC and FCAL is foreseen. To determine the most optimal set-up of the test, detailed simulations of calorimeter response to charged and neutral pions were fulfilled at MPI. These simulations were done with ATLSIM in the frame of the standard ATLAS software (version of geometry 98_2). Ideally collimated beams of particles were traced, starting from the ATLAS interaction point. No smearing of their energy and of the coordinates of the interaction point was applied for these simulation.

Three different configurations were simulated.

• Configuration 1:

  • beam-pipe - ON
  • inner tracker - OFF
  • magnetic field - OFF
  • azimuthal angle fixed at Phi=0.53996 (centre of the bin no.6)
  • cryostats - ON

  • charged pions of different energies at different pseudorapidities
  • 2000 events per energy/pseudorapidity
  • file names: cEEEnP.PP.data.gz, where
    EEE - energy, P.PP - pseudorapidity

  Files, simulated with this configuration, can be downloaded from this directory.

• Configuration 2:

  • beam-pipe - ON
  • inner tracker - OFF
  • magnetic field - ON
  • isotropic azimuthal angle (0-6.28)
  • cryostats - ON

  • 200 GeV charged and neutral pions at different pseudorapidities
  • 2000 events per energy/particle type
  • file names: cP.PPnpiT.data.gz, where
    P.PP - pseudorapidity, T=p for charge pions, T=0 for neutral pions

  Files, simulated with this configuration, can be downloaded from this directory.

• Configuration 6:

  • beam-pipe - ON
  • inner tracker - OFF
  • magnetic field - ON
  • isotropic azimuthal angle (0-6.28)
  • cryostats - OFF

  • 200 GeV charged and neutral pions at different pseudorapidities
  • 1000 events per energy/particle type
  • file names: cP.PPnncT.data.gz, where
    P.PP - pseudorapidity, T=p for charge pions, T=0 for neutral pions

  Files, simulated with this configuration, can be downloaded from this directory.

Some results of crack studies, obtained by A. Kiryunin and presented at different LARG meetings, are available from this Web page.

To the MPI-HEC-Simulation page

Last modified September 21, 2001