• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT
    Make New Entry, Make Followup Entry

    User name mercado

    Log entry time 08:11:03 on September 3,2009

    Entry number 287642

    keyword=Owl Shift Summary


    00:10 - Beam is back.

    00:19 - PITA scans and attampt at linearity tests.

    02:12 - Changed Left Arm Det HV from 1575 to 2100.
    Made changes to get counting mode working.
    Asked for 0.5uA. Got 0.6uA. Take run.
    Didn't see a spectrum (see halog 287601).

    02:26 - Asked MCC to go back to 100uA. Start production.

    04:18 - Started new Compton DAQ run.

    05:30 - Started new Compton DAQ run.

    07:34 - Try to get spectra from left arm detector. This time at HV=2150. Ask for 0.5uA. Still no spectrum.

    07:43 - Back to production until beam goes away.



    11897 - PITA scan, stopped prematurely because of incorrect setpoints set in GreenMonster
    11898 - PITA scan second attempt
    11899 - det linearity studies at 100 uA, adjusting Base LED setpoints to work within adc saturation limits.
    11900 - Check to see if detectors are in counting mode.

    Production:

    11901.. Beam was 100uA for a few seconds then dropped back to 0.5
    11902.. 96K events. Beam is stable at 100uA.
    11903..
    11904.. Checking ranges of CH ADCs used for BCMs.
    11905.. 100K events. Back to production
    11906.. 100K events.
    11907.. 98K events.