Cosmics test plans

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Objectives:

  • Test drive the AIEC software
  • Demonstrate that the CDC gain is stable


Strategy:

  • Designate 2130V as the nominal HV for cosmics, to raise more hits above the noise, but keep 20V headroom for the AI.
  • Tell the AI that the HVB current is constant at 9uA so that it can operate within the range of its trained data
  • Use 1V steps and 1h runs


Needs:

  • AIEC software to read epics and wait for a stable period before calculating the gain and setting the HV
  • Method for scaling the HVB current to what it would be at the nominal HV before running the AI - will not be needed for cosmics but will be needed for CPP.
  • Script to project dE/dx for 4-10 GeV tracks, fit it and calculate the gain factor
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