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    User name Moffit

    Log entry time 16:04:02 on February 9, 2007

    Entry number 191716

    keyword=Day Shift Summary

    Day Shift for Friday February 9th, 2007

       Leader:   Bryan Moffit

       Target:   Elena Khrosinkova

       Beam Energy      = 0.362 GeV

    Summary

    Beam delivery troubles throughout shift. Module that reads out liquid levels for Right Q2 was replaced during a short controlled access.

    Significant Events

    • 08:00 Began shift with no beam.
    • 08:20 MCC calls and says they're preparing our line for beam.
    • 08:25 Heidi calls because she noticed that RQ2 tripped on low cryolevel. I reset it from the GUI, cycled it, and set it to the value shown on the printout.
    • 08:52 MCC says they will begin sending CW to check steering.
    • 09:25 Cryo flow to RQ2 troubles continue. Ed Folts paged, and he says he'll be in contact with the proper people.
    • 09:30 Ed calls back and says it's probably not a real flow problem. Need to take an access to check the meter. MCC is still working on beam steering, so I told Ed that we would page him when they are done (ET 1-2 hours).
    • 09:55 Status check from Alexander Camsonne. He just wants to make sure the analysis software is ready when we get data.
    • 11:05 Status check from Brad.
    • 12:30 5µA CW. Performed a harp scan.
    • 12:40 Another harp scan. Then MCC takes beam back to tune, to check response of Ion Chambers (not working?).
    • 12:48 MCC returns CW. Ion Chambers still have no reading, but system is alive. They said we can run like this.
    • 12:57 Ion chamber readings return, after MCC contacts SOC.
    • 13:01 Moved to BeO viewer. Didn't observe a spot on the target. Bad camera angle?
    • 13:17 Moved to Carbon target.
    • 13:30 Moved to Tantalum target.
    • 13:50 Asked MCC for escorted controlled access.
    • 14:09 ARM arrives for access.
    • 14:25 Heidi returns from the Hall. Back to beam permit. Replaced a liquid level readout module on Right Q2.
    • 15:00 MCC has trouble delivering CW.

    Data Run Summary

    • 12:26 Run 6073/26064 - Harp Scan. 5 µA. Not many events.
    • 12:26 Run 6074/26065 - Harp Scan. 5 µA. Not many events.
    • 13:20 Run 6075/26066 - Carbon Target, 5µA.. Whoops.. a bit of tantalum at the end of this run..
    • 13:35 Run 6076/26067 - Tantalum Target, 5µA.
      • (snagged from saw's post in hall C logbook)