Aggregator

Log Number: 4483130Logbook(s): 

• ELOG

Entry Makers: jhowardBody: 

Independent of beam. Not sure if is a particular cavity or not.

Log Number: 4483129Logbook(s): 

• ELOG

Body: Currently Disabled Alarms - all

The Following Alarms Have Been Disabled Within the Last Week
===============================================================
03/30/2026 16:44:26
HALLB
eforman
Not running to Hall B
---------------------------
03/27/2026 21:51:28
ACC=>VACUUM=>WEST_ARC=>ARCA=>VIPAA02
anthony
Annoyabce alarm. Not running beam in that area at this time.
---------------------------

The Following Alarms Have Been Disabled For Over a Week
===============================================================
03/26/2026 20:52:50

Log Number: 4483128Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Deir
DATE:             04/03/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4483124Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Chaudhary
DATE:             04/03/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4483122Logbook(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 2026-03-26-2026-04-02"


Data directory: /cs/prohome/apps/s/smartRAT2/3-3/fileio/pca_data/output_cavityOutDet/calibrated_cavitylevel_centralize_tsfresh_minimal_gmespmes/whole/rcntnp/2026-03-26-2026-04-02/PCA/

Log Number: 4483121Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: jhoward 04-02-26 23:53:48 {A:i B:5 C:2 E:345 A=BS B=BS C=CW D=BS 0R08=12.12 No dumps in.

Log Number: 4483116Logbook(s): 

• ELOG
• LERFLOG

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

Date : 04-02-26
Time : 23:49:17
Day : Thursday
Shift : Owl

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

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

Log Number: 4483114Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: 12 uA CW to Hall C.

Log Number: 4483113Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4483112Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

Hall C N2 storage tank pressure alarm HIHI limit increased from 50 to 54 to stop the alarm from chattering. The level has been dropping from 90 over the course of the day.

Log Number: 4483103Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
1L08-3
Username: bschauml
Date/Time: 04-02-26_22:16:01
RF Status: Good
Tuner Status: Good
Comment: DRVH=5.400 Causes Beam Instability - See ELOG 4483101
Previous OPS DRVH: 5.9
Special Instructions:

Log Number: 4483101Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

We've had a substantial number of BLA trips tonight with the 3C12 BPM DAQ indicating an energy deviation. I started poking around for the culprit using RF Health Check and SmartRAT, with the latter often indicating that several cavities in 1L08 were likely candidates for the trips. All cavities in the zone displayed a disturbance in PMES with a cluster of quick 100+ degree dips right before the BLA trip, as well as an increase of noise on GASK, and PASK insability. 1L08-3 was the most severe, with the GASK often spiking to 9.5 or 10.

Log Number: 4483090Logbook(s): 

• ELOG

Entry Makers: kernsBody: 

OPSPR on 2L20-5 High GLDER by ops ELOG 4482896. Put an explanation why GLDER PPM was high in the OPSPR followup for this 3.6 Mv/m Cavity that was GSET 0. If we recover it and set RATN from the 11.1 db back to 6 db, GLDER should fall well below 70 PPM and not warn. GASK will only be .8v but we are only driving this low gradient cavity with 400w.

Log Number: 4483079Logbook(s): 

• ELOG
• RFLOG

Body: 

Michael, IF signal for the legacy zones is nominally 2mw and since the MO line is shorter for the Injector, its easy to set and pad out for 2mw. The North and South are running higher in the legacy zones but they are within tolerances and not causing problems. 0L03-1 LOPW readback is 48ish but this is just a detected level that would still work with the Upconverter output drive from the RF converter in the legacy zones. We have more leeway in the old analog boards than the digital and the drive would definitely let you know it wasn't working if the LOPW/IF wasn't sufficient.

Log Number: 4483050Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Wednesday April 01 through 18:00 Thursday April 02 AES DC power Systems AESDCP Opportunistic Trim Card Swaps 2026

2026-04-02 11:04 - Jason Delk

W

Log Number: 4483048Logbook(s): 

• HBLOG
• ELOG
• INCLOG

Body: 

VBV2H00A solenoid actuator operation turned over to PRad II controls with position monitoring only maintained by the Accelerator/Hall B vacuum controls for Epics readback and FSD permit.

VBV2H00A Solenoid to be wired in parallel with VBV2H00B solenoid controls so both valves will be commanded open/closed simultaneously from the local PRad control. No remote operation will be available for these valves.

Log Number: 4483046Logbook(s): 

• ELOG

Body: The following entry was placed in the Accelerator Bypassed-Interlocks Log (ABIL) Device: VPG2H00A controls Function: Vacuum Interlock for VBV2H01A Location: HB01ZL116 Purpose: Bypass interloc due to gauge being removed Exp.

Log Number: 4483043Logbook(s): 

• POLOG
• ELOG

Entry Makers: mamunBody: 

[ATLIS-119403: Implement a Gamma IP controller for CEBAF gun anode biasing and current monitoring, following the method used in UITF]

Claire Jones added a button for the VIP InjAnode to the injector beamline vacuum screen, right under the gun bake pumps. We will need the current and voltage channels to be archived. I am wondering if having a linked screen similar to the UITF (Fig2) would be handy for the info related to network configuration.

Log Number: 4483042Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
2L12-5
Username: bschauml
Date/Time: 04-02-26_17:39:03
RF Status: Good
Tuner Status: Good
Comment: DRVH=10.100 Causes Beam Instability - ELOG 4483040
Previous OPS DRVH: 11.1
Special Instructions:

Log Number: 4483040Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Cavity was unstable so I derated it. We did so last night but did not update the ODVH so when LEM was run in the SL the derating was undone. Given the opportunity I will do a quick OLT.