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    User name Moffit

    Log entry time 08:03:19 on June 27, 2007

    Entry number 206775

    keyword=Owl Shift Summary

    Owl Shift for Wednesday June 27th, 2007

       Leader:   Bryan Moffit

       Target:   Octavian Geagla

       Worker:   Khem Chirapatpimol

       Beam Energy      = 1.655 GeV

    Summary

    Mostly production data. Much time taken to change spectrometer angles and magnet setpoints between kinematics.

    Significant Events

    • 00:00 Began shift in the middle of Run 1575 on the 3He, 50µA, Radiator Out.
    • 00:21 Finished Kinematic 5a.. start preparing for 5b.
    • 01:00 Finished setting HRS momenta, angles. Target now at Carbon optics. Asked for 50µA, raster off.
    • 01:12 Move to 3He. Put in 6% radiator.
    • 01:18 Total ready for beam.
    • 01:28 Ron Gilman checks in.
    • 03:08 Radiator Out. Increase beam current to 50µA.
    • 03:38 Asked for no beam to change targets and move to kinematic 5D.
    • 04:10 Finished moving spectrometers. Still waiting on Right Dipole.
    • 04:40 Right dipole finally settled. Asked for 50µA on carbon optics.
    • 05:03 6% Radiator In. Move to 3He.
    • 05:15 Discovered that 3He cell was already in position. Looks like the change to optics target did not occur during the kinematics change. Took the radiator back out, and moved to optics target. Hopefully the racetrack endcaps are still okay.
    • 05:45 Change to 3He target. 6% radiator in. Start with 40µA to be safe.
    • 06:18 Bump current up to 45µA.
    • 08:00 Passed Run 1585 to day shift.

    Data Run Summary

    • 00:00 Run 1575 - Background Run (3He), radiator out.
    • 01:00 Run 1576 - Optics Run (Carbon Optics). Raster off.
    • 01:21 Run 1577 - Production Run (3He), radiator in.
    • 01:50 Run 1578 - Production Run (3He), radiator in.
    • 02:45 Run 1579 - Production Run (3He), radiator in.
    • 03:10 Run 1580 - Background Run (3He), radiator out.
    • 04:43 Run 1581 - Junk Run (3He), radiator out. Raster off. Maybe useful for something else.
    • 05:26 Run 1582 - Optics Run (Carbon Optics), radiator out.
    • 05:55 Run 1583 - Production Run (3He), radiator in. 40µA
    • 06:19 Run 1584 - Production Run (3He), radiator in. 45µA
    • 07:12 Run 1585 - Production Run (3He), radiator in.
    "Good news everyone!"

    A lecture on how we know, through the process of elimination, that the electron tastes like grape-aide.