Aggregator

Log Number: 4504454Logbook(s): 

• ELOG
• SRFLOG

Entry Makers: victorcBody: 

Like last night. Valves 1L06A or 1L06B keep closing. Calling SRF on-call.

Log Number: 4504452Logbook(s): 

• ELOG

Entry Makers: kpriceBody: 

Made contact at 01:18 regarding VIP1L06B. SRF on-call is going to try to find available staff to respond to the situation.

Log Number: 4504451Logbook(s): 

• ELOG

Entry Makers: jhowardBody: 

Beam paused because 1L06 valves shut. Contacting RadCon incase an access is needed for the pump.

Log Number: 4504448Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17017Title:
VIP1L06B tripping valves closed again

Summary:
Just like last night, VIP1L06B tripped off VBV1L06A/B valves and they will not open.

Log Number: 4504447Logbook(s): 

• ELOG

Entry Makers: jhowardBody: 

Recovered with key flips with no issue. We did notice that there is a spike an RM05 in the North Access right after. Maybe beam is being flung around, or the trips are a symptom of something else.

Log Number: 4504443Logbook(s): 

• HDLOG
• ELOG

Entry Makers: victorcBody: 

Log Number: 4504437Logbook(s): 

• ELOG

Body: Calibration ParametersHall:DTarget: 1.1x10-3 Al 100umPass: 5.5Note: Calibrated On:2026-May-02 07:48Calibrated By: msmithFile:D-2026-05-02_0748_1.1x10-3_Al_100um_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)East Wa

Log Number: 4504436Logbook(s): 

• HDLOG
• ELOG

Entry Makers: victorcBody: 

Log Number: 4504435Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Chaudhary
DATE:             05/25/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4504433Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Price
DATE:             05/26/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4504424Logbook(s): 

• ELOG
• RFLOG

Entry Makers: dturnerBody: smartRAT V3-4 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 2026-05-18-2026-05-25"


Data directory: /cs/prohome/apps/s/smartRAT2/3-4/fileio/pca_data/output_cavityOutDet/calibrated_cavitylevel_centralize_tsfresh_minimal_gmespmes/whole/rcntnp/2026-05-18-2026-05-25/PCA/

Log Number: 4504422Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: jhoward 05-25-26 23:44:48 {A:i B:5 C:3 E:345 A=BS B=CW C=CW D=CW 0R08=57.03 No dumps in.

Log Number: 4504421Logbook(s): 

• ELOG
• LERFLOG

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

Date : 05-25-26
Time : 23:41:05
Day : Monday
Shift : Owl

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

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

Log Number: 4504415Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Machine tuning/steering in progress.

Log Number: 4504413Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4504405Logbook(s): 

• ELOG

Entry Makers: dchriBody: 

Starting around 15:00 today NL service building ODH head had dropped (along with the LERF ODH head OM226)

It then took a steady rise and is now settling at minor alarm levels.
If it continues to fall, it will need attention

Log Number: 4504399Logbook(s): 

• ELOG

Entry Makers: dchriBody: 

Things are getting very tangled.

Between the high interception (suspect to be charging/discharging around/within the chopper)
And rise in BLM's in the early NL (1L08,9,10) around ~19:45 today
The North Linac service building RAD#5 alarm
all these things happening around/at the same time...

Also NL GP seems to be getting more and more slippy. But if I can simply adjust GP and bring down Upstream Halo's (and probably IDX 3S00 as well) then I'll take it as a god thing

Overall, something sad is happening in the north.

Log Number: 4504396Logbook(s): 

• ELOG

Entry Makers: dchriBody: 

North Linac BLM activity is very jumpy compared to what we usually see. 1L08 seems to be in continuous fault with surrounding zones also riding high...

and we still have interception issues in the injector which are shaking everything every time we get a 'suspect' discharge

Log Number: 4504391Logbook(s): 

• DCLOG
• ELOG

Entry Makers: yoonBody: 

took setpoint and cycled

no TC swap

Log Number: 4504390Logbook(s): 

• DCLOG
• ELOG

Entry Makers: yoonBody: 

I noticed while swapping this that the red light at CR32 was blinking on both the second card that had been placed into ch 17, and the third which I put in. I didnt swap out the first one so I'm not positive if it was blinking on that card also. None of the other cards in that bay (third bay down on rack NL01B02) had CR32 lit up.