• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT

    User name Humensky

    Log entry time 07:58:02 on June25,2004

    Entry number 126808

    keyword=Owl shift summary

    00:25 L,R HRS at +2%, taking 0.15uA of beam. HV back on HAPPEX detectors, scanners, and VDCs.
    01:15 L,R HRS at -2%, taking 0.15uA of beam. Detector alignment run.
    02:00 L HRS set to 2.974 GeV/c and R HRS set to 2.964 GeV/c to center elastic peak on HAPPEX detectors. Taking run to verify
    alignment. Profile detector voltages are 1500V; HAPPEX
    detector voltages are still 1800V.
    02:20 profile detector studies -- looking for elastic peak with
    profile detector.
    03:20 Starting checkout of 5uA beam on LH2 20cm target. Setting
    voltages, ramping up current in steps of 5uA to 20uA -- ran
    there till ~05:00.
    05:00 Still 20uA; Scanning target fan speed -- run 2392. raster 3.5^2
    05:20 Scanning target fan speed w/ raster 1x1mm. Run 2393.
    06:00 Raise current to 30uA -- brief production run 2394.
    06:05 Scan targer fan speed at 30uA w/ raster 3.5x3.5mm - run 2395.
    06:25 Production mode at 30uA.

    Run Summary:
    2386 initial setting of detector, lumi voltages at 5uA
    2387 more 5uA running. Position initially at x=-.86mm on target
    beam mod on, feedback off
    2388 more 5uA running, beam mod on, feedback on.
    2389 ramping current up to 20uA in 5uA steps. bmw, fdbk on
    2390 adjusting detector, lumi HV at 20uA
    2391 "production" running at 20uA
    2392 Fan speed scan at 3.5x3.5mm raster
    2393 Fan speed scan at 1.2x1.2mm raster
    2394 brief production run at 30uA
    2395 Fan speed scan at 3.5x3.5mm raster and 30uA
    2396 production run at 30uA
    2397 production run at 30uA