Aggregator
Downtime Incident CREATED: Hall C Spectrometer issues
"xC BNR due to spectrometer issue"
QuickPic - xD to 200 nA on JD80-213 80 um 45/135
iCalibrate: Hall D
ATLis Comments Daily Digest
Log Number: 4537171Logbook(s): Tags: Body:
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ATLis Comments Posted 18:00 Sunday August 02 through 18:00 Monday August 03
AES DC power Systems
Investigate Noisy 20A Trims (2026)
2026-08-03 13:08 - Jason Delk
We're
Used Arc A Correctors to Reduce AR09 IDX Rates
Log Number: 4537166Logbook(s): Entry Makers: bschaumlBody:
As was the case yesterday, beam had drifted since we currently have no lock running here, so I manually tweaked the vertical lock correctors. Adjustment in this plane was informed by the displacement of the BS SLM spot from the refence position, which was largely corrected by this steering.
QuickPic - xC request 70uA
QuickPic - xC request 50uA
AutoLog - UNMasking Hall C Normal Target
QuickPic - xC target change --> LD2
iCalibrate: Hall C
AutoLog - Masking Hall C Normal Target
MBC5R02V Mismatch
APPROVED Hall C End Station Dump O2 Spikes Assessment
Hall C FFB Misbehaving
Log Number: 4537113Logbook(s): Entry Makers: bschaumlBody:
Ever since the previous crew redid a BPM gain search after the hall dropped from 70 to 50 uA, the correctors seemed to be dropping out every few seconds, causing fairly substantial beam instability in the hall. It appears that they did not pause FFB before attempting to trigger (spike on the pink PV) a gain search, so the gain was never actually adjusted. Pausing FFB and running another gain search seemed to clear this up.










