GEANT4 simulation of the XAMS setup

These simulations combine the information about the geometry of the cryostat, the Xe properties and the energy deposit of sources inside the detector volume. The source code for this is hosted on a GitHub repository.

Xenon detection properties

  • goals:
    • path length between double scatters in lXe
    • can GridPix resolve double scatters? (better: to what precision does it?)
  • longterm goal:
    • include NEST in calculations to account for correct division of deposited energy to scintillation and ionisation.

TPC construction for the XAMS setup

Build all vessels of the cryostat, pipes, and the inner (Xe-filled) test chamber in GEANT4:
  • whole geometry consists of
    • lXe volume inside the TPC (with Teflon layer and copper rings)
    • inner cryostat walls incl. the Xe gas layer
    • insulation volume
    • outer cryostat walls
    • world (outermost "frame" volume = the lab)
  • modular implementation: single layers of the geometry can be added to the simulation, i.e. it's possible to just look at the lXe volume inside the world, or include the inner cryostat wall with the gas phase (without the rest of the outside layers).

In addition to the cryostat and the lXe test chamber the TPC needs to be implemented. This requires:

  • electric field
  • PMT
  • meshes
  • field shaping rings

-- RolfS - 2014-10-03

Topic revision: r1 - 2014-10-03 - rolfs_40nikhef_2enl
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