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    User name paschke

    Log entry time 11:24:29 on August 1,2003

    Entry number 108459

    This entry is a followup to: 108433

    keyword=New PC-HV (PITA) setpoints


    For both IHWP IN and OUT:
    PC (PITA) POS = 7.855
    PC (PITA) NEG = 7.046


    Details:

    A second PITA scan was done with the IHWP inserted. The changes were
    negligible:

      DeltaV   HV+   HV-   Ev_low   Ev_high
      0   7.830   7.071   5200   9000
      200   8.330   6.571   13000   16000
      -200   7.330   7.571   17000   22000

    This scan was done at 10 uA, so BCM2 was saturating and only BCM4 is
    useful. Results are shown below. Final PC HV setpoints are only about
    20 Volts from IHWP OUT values: PC-POS = 7.880, PC-NEG = 7.021.

    I suggest only 1 set of Pockels cell HV setpoints, for simplicity.

    For both IHWP IN and OUT:
    PC (PITA) POS = 7.855
    PC (PITA) NEG = 7.046




    FIGURE 1