Aggregator

Log Number: 4481932Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16586Title:
Hall C SHMS Q1 interlock fault

Summary:
SHMS Q1 magnet showing an interlock fault.

Log Number: 4481933Logbook(s): 

• ELOG

Entry Makers: kpriceBody: 

Looks like the bypass bit was set but the cavity wasn't actually bypassed, i.e., it wasn't stepped off, improper masking set. It's definitely draining like crazy.

Log Number: 4481929Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Chaudhary
DATE:             03/31/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4481928Logbook(s): 

• HCLOG
• ELOG

Entry Makers: victorc

Log Number: 4481927Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Price
DATE:             03/31/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4481924Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16585Title:
Hall C beam dump radiation alarm

Summary:
RM702 went into alarm, contacted RadCon, got the ok to send beamDuration:
11 minutes

Time Down:
30-Mar-2026 23:50

Log Number: 4481923Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16585Title:
Hall C beam dump radiation alarm

Summary:
RM702 went into alarm, contacted RadCon, got the ok to send beamDuration:
11 minutes

Time Down:
30-Mar-2026 23:50

Log Number: 4481922Logbook(s): 

• ELOG
• RFLOG

Entry Makers: dturnerBody: smartRAT V3-3 on opsrfdaqnl1

To view waveforms from a timestamp:

ssh opsrfdaqnl1 "smartRAT -m DAQ -d /data/fast_daq/<timestamp>"


To view waveforms of the top 25 from this report:

ssh opsrfdaqnl1 "smartRAT_view_daily_top25 2026-03-23-2026-03-30"


Data directory: /cs/prohome/apps/s/smartRAT2/3-3/fileio/pca_data/output_cavityOutDet/calibrated_cavitylevel_centralize_tsfresh_minimal_gmespmes/whole/rcntnp/2026-03-23-2026-03-30/PCA/

Log Number: 4481921Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

RM702 High alarm came in through the alarm handler. We contacted RAD Instrumentation Support on-call and they assured us this was an expected reading and this seems more like an issue with an alarm handler setpoint or something. They concurred that we can send back.

Log Number: 4481920Logbook(s): 

• HCLOG
• ELOG

Entry Makers: yoonBody: 

request 40uA
Raster ON

Log Number: 4481919Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Beam studies in progress.

Log Number: 4481918Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4481917Logbook(s): 

• HCLOG
• ELOG

Entry Makers: yoonBody: 

Log Number: 4481916Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget:4cm DummyPass:2Note:SHMS angle -17.34,current -422.3Calibrated On:2026-Mar-30 23:40Calibrated By:yoonFile:C-2026-03-30_2340_4cm_Dummy_Pass-2.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)C

Log Number: 4481915Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Applied two iterations of changes to the Hall C channel scaling, going from 0.7432 to 0.7119 to 0.7138. IBC3H00 now matches IBC0R08 much closer than before and we were able to get up to 46 uA before tripping on (Fig. 3)a dump diffuser raster 2 fault. The hall is only asking for 40 uA so I am fine with only calibrating this far.

One somewhat confounding thing is the "Commit Status" indicator didn't turn green on the last commit. I think it's alright as the new channel scaling got applied according to the screen and PVs.

Log Number: 4481914Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16584Title:
Stopping to calibrate BLA before running high current to xC

Summary:
Stopping to calibrate BLA before running high current to xCDuration:
1 hour 32 minutes

Time Down:

Log Number: 4481913Logbook(s): 

• ELOG
• LERFLOG

Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 03-30-26
Time : 23:29:11
Day : Monday
Shift : Owl

Crew Chief : Howard
Program Deputy: Malace
Team : D
Arm : Price
Designated SSO: Chaudhary
LERF Operator:
Operators : Price, Chaudhary

This stamp certifies that the above Crew Chief has read/reviewed/received the following:

Log Number: 4481912Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4481911Logbook(s): 

• ELOG

Entry Makers: jhowardBody: 

With Hall C requesting 40 uA, checked with the PD about any concerns with sending that high of a current while O2 concentrations are elevated. At the moment we are oked to send up to 50 uA if possible, but we will keep on eye on the concetration, and if it spikes, we will talk with the PD and Hall and figure out a way forward.

Log Number: 4481909Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD