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    User name A. Camsonne

    Log entry time 18:20:24 on November 21, 2009

    Entry number 301651


    keyword=Vacuum Compton

    We heard the vacuum valve openening and closing in the Compton beamline. So the vacuum might have degraded. There were no apparent reason for them to operate but looking at the stripchart there seemed to have some vacuum spikes. There was not major work or bump on the beamline during our work, the box around the cavity was opened and work on the calorimeter only. We will keep an eye on it.

    A copy of this log entry has been emailed to: suhring@jlab.org,folts@jlab.org

    Figure 1