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    User name Ole Hansen

    Log entry time 16:01:35 on March30,2011

    Entry number 353770

    keyword=Day Shift Summary

    8:00 Start shift with production run 3150 in progress.

    8:45 Per run coordinator, start angle and momentum change on RHRS. Trouble with RHRS motion, we can only move a fraction of a degree, then the motors trip.

    ~9:00 Various quads on both arms trip. Helium levels of both Q1s are near zero.

    ~9:30 Heidi reports a vacuum problem on R-Q1. Asking for access. Subsequently we find that the small initial spectrometer motion must have caused a cable to pull on a pump, unplugging the pump and breaking a vacuum line. It is completely unclear how the cable got entangled with the pump.

    10:00 RHRS angle finally changed to 24.5 degrees. Recovery of magnets in progress. Also, other people are in the hall for opportunistic maintenance.

    12:00 Run coordinators decide on an alternate run plan, which requires moving BigBite and HAND. RHRS will be down until sometime tomorow.

    15:30 Configuration change complete. LHRS magnets all back up. BigBite and HAND at 92 degrees (someone said 91 degrees). Starting beam recovery.

    Run Summary

    3150-3151: production with owl shift kinematics

    3152-3163: cosmics, tests, checkout => junk

    3164: spot++ run with 30 uA on slanted carbon

    3165: detector checkout, 30 uA, slanted carbon