Aggregator

1L18-8 OLT

22 hours 25 minutes ago
Log Number: 4537211Logbook(s): Entry Makers: yoonBody: 

cavity was having issues recovering, tried to lower the GSET and walk it up first, no luck, so did an open loop tune after noticing the TDETA was low

yoon

iCalibrate: Hall D

23 hours 28 minutes ago
Log Number: 4537188Logbook(s): Body: Calibration ParametersHall:DTarget: JD80-213 80um 45/135Pass: 5.5Note: Calibrated On:2026-Jul-29 20:36Calibrated By: anthonyFile:D-2026-07-29_2036_JD80-213_80um_45_135_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)
bschauml

Used Arc A Correctors to Reduce AR09 IDX Rates

1 day ago
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.

bschauml

iCalibrate: Hall C

1 day ago
Log Number: 4537123Logbook(s): Body: Calibration ParametersHall:CTarget: Loop 1 10cmPass: 5Note: SHMS: -14.74 degreesCalibrated On:2026-Jul-28 07:10Calibrated By: msmithFile:C-2026-07-28_0710_Loop_1_10cm_Pass-5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Com
yoon

Hall C FFB Misbehaving

1 day 1 hour ago
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.

bschauml

Operator SIGN IN

1 day 1 hour ago
Log Number: 4537100Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Schaumloffel
DATE:             08/03/2026
SHIFT:               Swing

The operator has read the following:
bschauml

Shift Information

Shift Swing
CEBAF Program
MCC Crew Chief Forman
MCC Operators Schaumloffel, Yoon
Program Deputy Latosky
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