Thu, 19 Nov 2009 14:44:48 -0600 (CST)
S15B:S3 trip recovered at 14:40
S15B:S3 was reset at 14:32 and ramped up to its operational value at 14:40. We
did not observe any RMS beam motion.
Thu, 19 Nov 2009 14:11:43 -0600 (CST)
timing correction on S15B:S3 trip.
In the previous Xrayops notification email, S15B:S3 tripped off at 13:33,
not at 15:33.
Thu, 19 Nov 2009 13:58:07 -0600 (CST)
SR sextupole tripped at 15:33
S15B:S3 tripped off on IGBT | Diode OT at 15:33. SR beam lifetime dropped from
~8.2 hours to ~5.4 hours. We are still able to maintain topup operations.
Electron beam emittance and coupling changed less than 10%.
Fri, 13 Nov 2009 09:29:19 -0600
Reenabling Real-Time feedback and Vertical orbit
controllaw
13 November 2009 09:29 Real-Time Feedback and vertical orbit controllaw
has been reenabled.
Fri, 13 Nov 2009 09:14:52 -0600
Suspending Real-Time Feedback
13 November 2009 07:13 We are suspending Real-Time Feedback to remove a BPM.
Fri, 13 Nov 2009 07:48:27 -0600
Beam Restored
13 November 2009 at 07:44 there is 102mA of stored beam and shutter
permit has been given.
Fri, 13 Nov 2009 07:21:08 -0600
Beam Loss
13 November 2009 07:14 Beam was lost and investigation is under way.
Thu, 12 Nov 2009 22:04:06 -0600
(no subject)
Between 21:52 and 22:00 this evening the horizontal orbit controllaws
were stopped due to a bad BPM which was removed from the controllaw
configuration. The controllaws are operating normally now and there
should be no further disruption.
