Aggregator

Log Number: 4534404Logbook(s): 

• ELOG

Body: Calibration ParametersHall:DTarget: JD80-213 80um 0/90 degPass: 5.5Note: Calibrated On:2026-Jul-30 09:33Calibrated By: dthomasFile:D-2026-07-30_0933_JD80-213_80um_0_90_deg_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)

Log Number: 4534403Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: QE Measurement.

Log Number: 4534401Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

Body:  Accelerator PHYSICS STUDIES RESTORE ACC DOWN OFF (SAM) Planned 8 0 0

Log Number: 4534382Logbook(s): 

• BTLOG
• ELOG

Body: 

Jerone pointed out the steps are likely switching between passes (arcs). So that is a known effect and not related to beam motion.

Log Number: 4534365Logbook(s): 

• ELOG

Body: 

OM01 xmitter & sensor replaced. power cable re-routed through a new conduit to prevent potential EMF interference with sensor signal cable.

Log Number: 4534364Logbook(s): 

• HDLOG
• ELOG

Entry Makers: bbarkerBody: 

Log Number: 4534357Logbook(s): 

• ELOG

Body: Calibration ParametersHall:DTarget: 4.5x10-4 Al 40umPass: 5.5Note: Calibrated On:2026-Jul-11 10:12Calibrated By: alexsFile:D-2026-07-11_1012_4.5x10-4_Al_40um_Pass-5.5_High_Current.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)

Log Number: 4534353Logbook(s): 

• BTLOG
• ELOG

Body: 

Noted similar ~265 Hz noise on 3C12 labjack. Found similar noise on the labjack in 1A (IPM1A04) which is very broadband (extends past 500 Hz at times) and is very intermittant. Could be the same source Jerone was investigating yesterday. Ops is looking at SEE bpms around the racetrack and Yves looks to have found an intermittant corrector in his logbook entry. Correctors have waveforms and need to find out how they are sampled etc.

Log Number: 4534347Logbook(s): 

• HCLOG
• ELOG

Entry Makers: mmerzBody: 

Log Number: 4534345Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

Cycled the corrector to see if some noise would go away.

Log Number: 4534344Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4534343Logbook(s): 

• ELOG

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

Log Number: 4534340Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4534331Logbook(s): 

• BTLOG
• ELOG

Body: 

Daniel and I were looking at the noise level of the ARC7 and ARC8 vertical correctors after it was noted that we have an intermittent vertical noise oscillation (265 Hz or so) starting around ARC7 . See Attached ELOG .

Interminent noise spikes are clearly seen on the plot. The last large spike is when we cycled this magnet to see if it would help.

Other spikes were during normal running. It is a lock corrector that is kept off loop. Whether this warrants a trim card swap will have to be determined by experts.

Log Number: 4534330Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Merz
DATE:             07/30/2026
SHIFT:               Day

The operator has read the following:

• ELOG
• PD Shift Plan
• Radiation Surveys for PSS Segments in Controlled Access
• PSS Log

Log Number: 4534325Logbook(s): 

• ELOG
• BTLOG

Body: 

Channels: MBC7A01VNOISEALARM.NLE, MBC7A02VNOISEALARM.NLE, MBC7A04VNOISEALARM.NLE, MBC7A06VNOISEALARM.NLE, MBC7A08VNOISEALARM.NLE, MBC7A10VNOISEALARM.NLE, MBC7A12VNOISEALARM.NLE, MBC7A14VNOISEALARM.NLE, MBC7A16VNOISEALARM.NLE, MBC7A18VNOISEALARM.NLE, MBC7A20VNOISEALARM.NLE, MBC7A22VNOISEALARM.NLE, MBC7A24VNOISEALARM.NLE, MBC7A26VNOISEALARM.NLE, MBC7A28VNOISEALARM.NLE, MBC7A30VNOISEALARM.NLE, MBC7A32VNOISEALARM.NLE, MBC7R02VNOISEALARM.NLE, MBC7R04VNOISEALARM.NLE, MBC7R06VNOISEALARM.NLE, MBC7R07VNOISEALARM.NLE, MBC7R08VNOISEALARM.NLE, MBC7R09VNOISEALARM.NLE, MBC7R10VNOISEALARM.NLE, MBC7S01VNOISEA

Log Number: 4534312Logbook(s): 

• ELOG

Entry Makers: bbarkerBody: 

Log Number: 4534307Logbook(s): 

• ELOG

Body: 

The IDX detector at AS01A started to read high dose rates since 07/28 early morning, after switching to the 5th pass. The readings saturate, likely the dose rates are above 10 kR/h there. To get into the range, the Integration Time for the I400 at IDXSL27 may be adjusted down.

Log Number: 4534304Logbook(s): 

• ELOG

Body: 

xA Access Room Mag lock swaps added to SAM Cal.

Log Number: 4534303Logbook(s): 

• FMLOG
• ELOG
• RFLOG

Body: 

just submitted a F&O service request in your behalf (you'll get an auto-generated email if you haven't already). We'll take a look and report back. Please use the system for future requests if possible: https://jlab.servicenowservices.com/fmsp?id=fm_index