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    User name Moffit

    Log entry time 15:58:03 on February 11, 2007

    Entry number 192393

    keyword=Day Shift Summary

    Day Shift for Sunday February 11th, 2007

       Leader:   Bryan Moffit

       Target:   Brandon Craver

       Beam Energy      = 0.362 GeV

    Summary

    Nice data until an event in the injector left us beam-less.

    Significant Events

    • 08:00 Began shift in the middle of runs 6193/26181.
    • 08:10 Bob Michaels calls to see if situation with deadtime issue has changed. May come in later today.
    • 08:28 Move to carbon target.
    • 09:55 Status check from Brad.
    • 10:13 Move to B4C target.
    • 11:09 Move to Li target.
    • 12:11 Alarm on a couple channels in the beamline HV crate. Card #1: Ch 0 and 1 tripped off. I turned them back on.
    • 12:15 Moved left spectrometer to 51.0°
    • 12:30 MCC says the gun tripped. Looking into solving this problem.
    • 13:30 Controlled access.
    • 13:55 ARM and Alexander return from the Hall.
    • 15:35 MCC calls with an update on the Gun troubles. Could create a significant delay in beam delivery (few hours to a couple of days).

    Data Run Summary

      Left Arm θ = 46°, Right Arm θ = 24°
    • 08:00 Run 6193/26181 - Ta Target. 2.0x2.0 raster. 15 µA.
    • 08:32 Run 6194/26182 - C Target. 2.0x2.0 raster. 5 µA.
    • 09:22 Run 6195/26183 - C Target. 2.0x2.0 raster. 5 µA.
    • 10:15 Run 6196/26184 - B4C Target. 2.0x2.0 raster. 5 µA. Wrong Prescales.
    • 10:21 Run 6197/26185 - B4C Target. 2.0x2.0 raster. 5 µA. Wrong Prescales.
    • 10:32 Run 6198/26186 - B4C Target. 2.0x2.0 raster. 5 µA.
    • 10:51 Run 6199/26187 - B4C Target. 2.0x2.0 raster. 5 µA.
    • 11:18 Run 6200/26188 - Li Target. 2.0x2.0 raster. 5 µA. Wrong prescales.
    • 11:21 Run 6201/26189 - Li Target. 2.0x2.0 raster. 5 µA.
    • 11:49 Run 6202/26190 - Li Target. 2.0x2.0 raster. 5 µA.
      • Several CODA runs to diagnose DAQ deadtime issues