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User name mack
Log entry time 17:45:57 on November 27, 2009
Entry number 303076
This entry is a followup to: 302878
keyword=beam modulation comment
Laying subtleties aside, it seems clear there was a large, slow,
unrequested uni-polar energy swing which just happened to occur when
the second y-like coil was pulsed. My knee-jerk response is to blame
CREST or some other SRF utility, although I didn't think CREST made
energy changes this large. Contact Mike Tiefenback if you want an
expert opinion/diagnosis. If the culprit can be identifieid, it is not
something you want running when your orbit locks are off.
A copy of this log entry has been emailed to: nur@jlab.org,dalton@jlab.org