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    User name Dustin McNulty

    Log entry time 11:40:17 on January 24, 2009

    Entry number 257582

    keyword=Run Coordinator Report for Jan 24, 2009

    Run Coordinator Report for Jan 24, 2009:

    # Polarity status of the spectrometers: BigBite -ve (for e-), L-HRS -ve
    (for pi-)

    # pi-Vertical mode with the half-wave-plate IN


    Charge Accumulated Summary So Far:

    Half Wave Plate Q Expected (C) Q Accumulated (C) Comment

    pi- Vert IN 3.5 1.33 here

    pi- Vert OUT 3.5 4.04 Done


    pi- Trans IN 3.5 0.62 -

    pi- Trans OUT 3.5 4.38 Done


    pi+ Vert IN 3.5 5.06 Done

    pi+ Vert OUT 3.5 3.72 Done


    pi+ Trans IN 3.5 4.5 Done

    pi+ Trans OUT 3.5 3.66 Done



    Overall Plans (for next 24 hours):

    1. Will do Moeller measurement today starting at 11:30AM.

    2. Continue with production running for pi-Vertical configuration.


    Activities (during last 24+ hrs):

    - Completed ~8 hrs of positron running for pi- Vertical configuration
    (0.32 C accumulated).

    - Planned ACCESS (13:15 - 14:15): Todd and Scot change BB polarity
    from (+) to (-), Yi adjusts target holding field for negative BB
    polarity.

    - At 16:30, completed ~1 hr run (5474) on He3 reference cell (cell
    at 112 psi and dropping at rate of ~0.4 psi/hr).

    - Compton rates erratic during parts of reference cell run. MCC
    notified and corrected problem. Compton DAQ crashed twice between
    runs 5474 and 5476.

    - Labview target control crashed at 17:30. Jin fixed.

    - At 17:45, BB deadtime jumped to ~90%. Remote rebooting failed to
    remedy problem...Kalyan takes ACCESS (18:30 - 18:45) to power cycle
    crates...fixes problem.

    - At 22:00, target heater malfunction. Yi takes ACCESS (22:00 - 22:45)
    to repair. He replaces fuse. Able to continue production data-taking
    however heater temp. control unstable and oscillating between 222 and
    232 Celsius.

    - Note that hall C getting beam at around 02:00.

    - During Owl, BB HV trips twice. Jin asked MCC to tune beam to new
    "golden" beam positions: BPMA = (-13, 2.5); BPMB = (0.8, 2.5). This
    occurred at 04:00.

    - Also during Owl and continuing into the Day, HAPPEX DAQ ROC28 crashes
    frequently (5 times since last night) requiring kcoda to repair.
    Should look into this.

    - MCC having some RF problems this morning between 08:30 - 09:30.


    Beamtime Accounting:

    ABU BANU BNA Comment

    Day 5.14 2.43 0.44

    Swing 4.97 2.42 0.60

    Owl 6.43 0.53 1.04