[Xrayops] Y emmiitance and coupling change fixed

APS Experiment Hall X-ray Operations Problem List xrayops at mailman.aps.anl.gov
Sat Mar 10 09:33:51 CST 2007

At 09:22, on 03/10/07 the storage ring beam vertical emittance decreased 
by more than 10%, and the coupling dropped to 1.285.

This was due to a change in the CPU H coil and V coil amps.

At 09:30, on 03/10/07 Operations adjusted the emittance ratio, the 
coupling is back to 1.5%.A new SR UBOP has been installed. Printouts in 
the MCR.


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