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1L19-5 noisy PMES and PLDR alarms

13 hours 3 minutes ago
Log Number: 4479074Logbook(s): Entry Makers: alexsBody: 

Cavity has had pretty unstable PMES and frequent PLDR alarms. After GSET0'ing it, the beam spot on the 1A SLM looked better, so I suspect the phase jitter is real.

alexs

HYST AREA 7-0 Cycles Magnets

13 hours 7 minutes ago
Log Number: 4479073Logbook(s): Body: 

HYST AREA Version 7-0 has successfully cycled the following:

MBT1A01H
MBT1A01V
MBT1A03V
MBT1A04H
MBT1A05V
MBT1A06H
MBT1A07V
MBT1A08H
MBT1A09V
MBT1A11H
MBT1A13V
MBT1A14H
MBT1A15V
MBT1A16H
MBT1A17V
MBT1A18H
MBT1A19V
MBT1A21H
MBT1A23V
MBT1A24H
MBT1A25V
MBT1A26H
MBT1A27V
MBT1A28H
MBT1A30V
MBT1A31H
MBT1A33V
MBT1A34H
MBT1A35V
MBT1A36H
MBT1A37V
MBT1A38H
MBT1A40V

Total Time: 0.917 mins

dturner

HYST AREA 7-0 Cycles Magnets

13 hours 11 minutes ago
Log Number: 4479071Logbook(s): Body: 

HYST AREA Version 7-0 has successfully cycled the following:

MBT1A01H
MBT1A01V
MBT1A03V
MBT1A04H
MBT1A05V
MBT1A06H
MBT1A07V
MBT1A08H
MBT1A09V
MBT1A11H
MBT1A13V
MBT1A14H
MBT1A15V
MBT1A16H
MBT1A17V
MBT1A18H
MBT1A19V
MBT1A21H
MBT1A23V
MBT1A24H
MBT1A25V
MBT1A26H
MBT1A27V
MBT1A28H
MBT1A30V
MBT1A31H
MBT1A33V
MBT1A34H
MBT1A35V
MBT1A36H
MBT1A37V
MBT1A38H
MBT1A40V

Total Time: 0.917 mins

dturner

1A SLM jitter better without 1L19-5. NL Fudge decreased 0.008, SL increased 0.015

13 hours 11 minutes ago
Log Number: 4479070Logbook(s): Entry Makers: alexsBody: 

The beam spot has been looking a little shaky on the 1A SLM (separate problem from whatever is happening with the NL gang phase drifting). 1L19-5 has been repeatedly throwing PLDER alarms, and PMES appeared to be wobbling +/- 0.5 degrees. Since we have the extra time for tuning and are spoiled for overhead, GSET0 the cavity to see if it would change anything.

Possibly confirmation bias, but the 1A SLM looks a bit more stable without it (and beam-shaped!).

alexs

Autolog save

13 hours 20 minutes ago
Log Number: 4479065Logbook(s): Tags: Body: saver ran from opsl632

Saved: shriner 03-22-26 16:53:35 {A:i B:5 C:2 E:345 A=Tune B=BS C=BS D=BS 0R08=6.51 dump(s) in. swing shift before test plans. zpos.} { } ALL

Comments: swing shift before test plans.
shriner

2L09 cavity 1 OLT

13 hours 48 minutes ago
Log Number: 4479056Logbook(s): Entry Makers: anthonyBody: 

Cavity one in 2L09 was SOSing. Tried lowering GSET and then walking it back up with no success. Angle was so far off decided to OLT and cavity came back although tuner seems sluggish. Several times is just stopped moving during walk up. Operator intervention got it moving again.

anthony

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