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User name A. Camsonne
Log entry time 18:20:24 on November 21, 2009
Entry number 301651
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.
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