• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT

    User name paschke

    Log entry time 15:51:44 on June26,2004

    Entry number 126983

    keyword=BCM calibration runs

    Performed quick BCM calibration using current ramp.  The hope is to
    use the lumi, which should be pretty linear, to set BPM and BCM 
    pedestals.
    
    iocse8 X and Y gains set to 1270. iocse10 X and Y gains both to 1200.
    high RF gain bit set.
    iocse11 stayed in "feedback", which locks the gains to that used by
    feedback.  (960 in X, 980 in Y, for BPM12).
    
    Run 2439: setting HV on BLumis and Flumis
    Run 2440: BPMs not yet correct (lo gain bit), so junk
    
    Run 2441: actual current ramp: 30uA->5uA in 5uA steps, 20 uA, 30 uA.
    
    BPMs returned to autogain, lumi HVs returned to nominal.