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    User name R. Lindgren

    Log entry time 17:34:43 on May 9,2009

    Entry number 272149

    keyword=Day Shift Summary

    8:00 Day Shift starting with Production running
    Workers
    R. Lindgren SL
    A. Deur TO
    M Meziane 3rd
    Runs in Progress 2014 20931
    Happex started
    Miha arried to start DE/E Check

    9:00 LHRS DAQ crashed when BB Wire Chamber High Voltage turned on.
    Tried rebooting and it still failed
    Problem is with BB Trigger Supervisor
    Tried to reboot using web
    Still fails
    Calling Bryan for help.

    9:45 After turning BB Wire Chamber HV off and Scintillators HV off
    LHRS DAQ started working again. Now in production running.

    Beam position BPMA and BPMB y is at 2.9 NOT 2.0 as on white board
    Run Coordinator says its ok.

    Runs 2015 to 2024 and Runs 20932 to 20937 Junk Runs fixing DAQ


    9:45 Start Runs 2025 20938
    DAQ is now working


    Mask target
    Move to 3He
    Take 2 ua beam Raster size 4 x 4 start DAQ Runs 2034 and 20944 DAQ ok
    Take 2 ua beam Raster size 6 x 6 start DAQ Runs 2035 and 20945 DAQ ok

    Request MCC to increase beam from 2 to 5.5 ua and reduce raster
    to 4 x 4

    Raster problem caused by MCC See Halog

    Checked rates for different raster sizes

    T3 T1 Size
    900 730 4 x 4
    930 720 6 x 6
    908 770 4 x 4

    Set to 4 x 4
    Increase beam to 5.5 ua
    DAQ okay

    Turn high Voltage on HAND

    Back to production running

    11:55 Start Runs 2039 20949

    13:00 Noticed VDC high voltage is down on R-HRS Bottom VDC

    Continue running LHS while trying to fix VDC voltage

    Voltage failed during Run 20946

    It might have happened at the beginning of the run when raster went crazy in the y direction due to error by MCC.

    Bogdan in Hall trying to debug the problem with the VDC high voltage.

    Wery little production running due to DAQ problems and R-HRS VDC high voltage problem. Continuing to debug problem.

    End of Day shift