Basic study of FGT response for M-C, UPGR13

  1. Most likely real detector design
  2. Implementation of a single FGT disk in UPGR13 geometry. Below lower corner of single disk is shown, particles go from left to right.
    It is a sandwitch of:
    - (foil=blue+ active volume=magenta), 0.5+4 mm
    - 3 x (foil+support=green),0.5+3 mm
    - readout plane=green, 3 mm
    Active volume (magenta) is 4 mm thick and filled with
          Component Ar A=39.95   Z=18.   W=0.9
          Component C  A=12.01   Z=6.    W=0.1*1*12.01/44.01
          Component O  A=16.     Z=8.    W=0.1*2*16./44.01
          Mixture   Ar_mix  Dens=0.0018015 Isvol=1

  3. Input events: single electron per event, fixed: 40 GeV ET, eta=1.9

  4. Distribution of geant energy loss (from g2t_fgt_hit table) , summed over hist and all 6 disks, 10 electrons used.

    The UPGR13 distribution has peak/RMS=1.4 much broader than estimation from Frank peak/RMS=3.4 , shown last week at LBL

  5. Geant energy loss for 100 muons, ET=40 GeV at eta=1.9, UPGR13

  6. Geant energy loss for 100 electrons, ET=40 GeV at eta=1.9, UPGR13

  7. Geant energy loss for 1000 mu+, ET=1 GeV at eta=1.9, UPGR13