TOF HV SCAN FALL 2019

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HV SCAN OF TOF PMTS

  • Beam conditions: 180nA e-beam on 3.10^4 Al radiator
  • start with 1150V for all PMTs
  • take data at each HV settings for about 20 files
  • HV steps: +/- 25V:
    • HV = 1150, 1175, 1200, 1225, 1250, 1275, 1300 and new 1325, 1350
    • HV = 1125, 1100, 1075, and new: 1050, 1025

After the scan return to nominal running conditions as follows:

On the TOF HV screen click save/restore. This opens a small window. Click restore HV parameter setpoints. This opens a larger window. Check that the file at the top of the list is selected, this ends with 1_Dec_2019_ALL1150V.snap Click Restore.

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