[Xrayops] SR beam instability issue

APS Experiment Hall X-ray Operations Problem List xrayops at mailman.aps.anl.gov
Thu Apr 19 18:34:03 CDT 2012

SR beam instability started at 17:58 on 4/19/12 with ~87mA remaining stored beam.
It caused SR coupling to climb up steadily from 1.2% to ~2.4% as of 18:30. SR beam
decay rate has gone up. Operations is investigating and monitoring the situation.

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