FrascatiTestbeam

Geant4 simulation of the test beam setup in BTF 9-11 May 2022.

The source is based on the TestEm4 example, with the addition of hadronic physics list FTFP_BERT, the geometry of the experimental setup and the interface for the output data.

Physics

Hadronic list FTFP_BERT.

Geometry

The geometry contains the DUT box assembly without the top cover. The box is closed with a thin Al foil. There are the beam pipe exit window, the Fitpix detector and the DUT. Simulation in air.

Data structure output

There are two TDirectory: histograms and ntuple.

histograms

There are the following histograms

1. primary
   Primary particle energy
2. edepTotUp
   Energy/event deposited in the upstream sensor
3. chargeUp
   Charge deposited in the pad upstream sensor
4. primaryUp
   Track's energy entering upstream sensor
5. edepTotLargeUp
   Energy/B deposited in the large pad 110 um sensor
6. edepTotSmallUp
   Energy/B deposited in the small pad 110 um sensor
7. edepTotDown
   Energy/event deposited in the downstream sensor
8. chargeDown
   Charge deposited in the pad downstream sensor
9. primaryDown
   Track's energy entering downstream sensor
10. edepTotLargeDown
    Energy/B deposited in the large pad 150um sensor
11. edepTotSmallDown
    Energy/B deposited in the small pad 150um sensor
12. edepMapUp
    Spatial energy dep. distribution upstream sensor
13. edepMapDown
    Spatial energy dep. distribution downstream sensor
14. edepMapFitpix
    Spatial energy dep. distribution fitpix sensor

ntuple

There are the following TTree in the ntuple directory

1. DUTs
   Variables: (event, layer, edep, edepPosX, edepPosY, edepPosZ, wafer)
   Energy deposition from all steps in the sensitive volumes
2. RUN
   Variables: (event, etot, wafer)
   Energy/event deposited in the wafer
3. AUX
   Variables: (event, etotLP, etotSP)
   Energy/event deposited in the wafer but with position condition limited on the pad regions