shower study for Si-W prototype ECAL with ASIC readout
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shower study for Si-W prototype ECAL with ASIC readout

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Prototype Si-W electromagnetic calorimeter tested with 1-5 GeV electron beam at DESY. The result which is related, shower development for different radiation length was discussed.

Prototype Si-W electromagnetic calorimeter tested with 1-5 GeV electron beam at DESY. The result which is related, shower development for different radiation length was discussed.

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  • 1. Shower study for 1-5 GeV energy electron beam with ASICSKIROC readout Elmaddin Guliyev LLR – Ecole Polytechnique, CNRS/IN2P3 Palaiseau, France 26.09.2012- Analysis meeting
  • 2. Tungsten plate Detector Interface (DIF) to DAQ (LDA) am bee- Very front-electronics (FVE8) ASIC+Si wafer e- beam energy: 1-5 GeV Rate: 1 KHz – 5 Hz 6 layer of detector=6*(Si wafer+4ASIC+DIF)
  • 3. 1 GeV e- hit with 6 layer of detector: between the layersand in front of 1st layer W plate placed. All the run was same: 3600 sec.
  • 4. Example of MIP for one chip, channel,column Pedestal 1st MIP 2nd MIP
  • 5. MIP position variety:
  • 6. MIP position variety:
  • 7. Shower profile for 6 layer/detector for 1 GeV electron / X0
  • 8. Beam alignment or leakage in configuration????
  • 9. Hit per event for different radiation length
  • 10. X profile GAUS fitUse to estimate:Shower size-sigma from gausBeam alignment-mean from gaus
  • 11. Mean value of Gaus fit of shower on X profile Deviation ==> beam alignment
  • 12. Shower size for different radiation length:Size of shower determined from sigma of Gaus fit of shower profile. Shower size (sigma gaus)
  • 13. Shower study in radial direction for different radiation length.e-
  • 14. Efficiency for the layers (detectors)1 GeV electron beamX0 and 6X0 configuration
  • 15. Hit for one event in same BCID
  • 16. Summary:Hit distribution for different radiation length analysed.The size of shower estimated for different radiation length.It seems beam not aligned proper or we had a shower leakagedue to particle loose, which gives the discrepancy in end of X0 and beginning of3X0 configuration (same for 3X0 and 6X0).Need to verify it with same geometry with simulation!
  • 17. Hold calibrationOptimized value: 100-110 uDelay