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    User name Moffit

    Log entry time 08:01:35 on November 14, 2004

    Entry number 136611

    keyword=Owl Shift Summary

    Owl Shift for Sunday November 14th, 2004


    Leader:   B. Moffit
    Target:   A. Camsonne
    Worker:   B. Guillon
    Left HRS p0   = -2.9500 GeV/c   Angle = 19.32°
    Right HRS p0  = +0.6000 GeV/c   Angle = 70.00°
    DVCS Distance = 1.1             DVCS Angle = 18.5°
    Prod. Beam Current = 4 µA

    Summary

    All production data on LD2 tonight.
    Interruptions only from accelerator problems.

    Significant Events

    • 00:00 Began the shift by starting Run 4640.
    • 00:40 Noticed that the compton rates would not drop when the cavity was off (although they would, when the beam was off). Alexandre fixes it rebooting the ROC and restarting CODA.
    • 01:44 MCC calls: No beam for 15-20 minutes (halog entry 136591).
    • 02:05 MCC calls: Beam delivery to Hall-A beam now.
    • 02:30 Noticed the same problem with Compton. Alexandre restarts the Compton CODA in the front room, and everything looks fine again.
    • 03:53 DVCS HV IOC crashes (during Run 4644). It then apparently rebooted itself.
    • 04:50 MCC calls... no beam for a bit (halog entry 136599).
    • 04:58 Beam returns.
    • 07:55 Asked for a bleed-through measurement.. 2.52%(see elog entry 1244761 on-site only)

    Data Run Summary

    • 00:00 Run 4640 - Production Run (LD2)
    • 00:43 Run 4641 - Production Run (LD2)
    • 01:24 Run 4642 - Production Run (LD2)
    • 02:31 Run 4643 - Production Run (LD2)
    • 03:15 Run 4644 - Production Run (LD2)
    • 04:03 Run 4645 - Production Run (LD2)
    • 05:21 Run 4646 - Production Run (LD2)
    • 06:26 Run 4647 - Production Run (LD2)
    • 07:07 Run 4648 - Production Run (LD2) - Passed to Day Shift.

    Trip Summary

    Hour Number
    of trips
    ABU Correction
    (minutes)
    00:00 9 3
    01:00 5 1.7
    02:00 19 6.3
    03:00 11 3.7
    04:00 15 5
    05:00 11 3.7
    06:00 13 4.3
    07:00 16 5.3
    Total 99 33


    What happens when you detonate a spherical metal honeycomb over five hundred miles wide just above the surface of a habitable world?