Aggregator

Log Number: 4520216Logbook(s): 

• ELOG

Body: 

HYST AREA Version 7-0 has successfully cycled the following:

Area.Linacs.South

Total Time: 3.133 mins

Log Number: 4520215Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19.5 was successfully run for the South Linac on 2026-07-05 21:24:28. The application phase took 00:01:51 to complete.

Log Number: 4520214Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17343Title:
2L10-7 dropped out of RF

Summary:
Ops unable to get cavity gradient above 3.4, tried following guidance from elog 4519048 with no luck.Duration:
9 minutes

Time Down:
05

Log Number: 4520209Logbook(s): 

• HBLOG
• ELOG

Entry Makers: yoonBody: 

Log Number: 4520197Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Saturday July 04 through 18:00 Sunday July 05 AES RF Systems RF Maintenance June 30th, 2026

2026-07-04 19:07 - Christopher Kerns

07/04/26 : 1427

Log Number: 4520196Logbook(s): 

• CLOG
• ELOG

Entry Makers: beneschBody: 

I don't recall seeing spikes at hourly intervals before. Certainly not on every cold compressor. Alarms are fine now, but it's between spikes.

Log Number: 4520190Logbook(s): 

• HBLOG
• ELOG

Entry Makers: yoonBody: 

Log Number: 4520185Logbook(s): 

• HBLOG
• ELOG

Entry Makers: yoonBody: 

Log Number: 4520183Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Schaumloffel
DATE:             07/05/2026
SHIFT:               Swing

The operator has read the following:

Log Number: 4520182Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Yoon
DATE:             07/05/2026
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4520180Logbook(s): 

• ELOG

Entry Makers: janakBody: 

VIP1L25B was very stable until about 3:40, then started getting noisy and tripping on big spikes, much like what happened at around 10 this morning. Seems to be settling out again now.

Log Number: 4520179Logbook(s): 

• ELOG
• LERFLOG

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

Date : 07-05-26
Time : 15:17:47
Day : Sunday
Shift : Swing

Crew Chief : Forman
Program Deputy: Duzik
Team : F
Arm : Schaumloffel
Designated SSO: Yoon
LERF Operator:
Operators : Schaumloffel, Yoon

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

Log Number: 4520178Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: CW beam to Hall B

Log Number: 4520177Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4520172Logbook(s): 

• DCLOG
• ELOG

Entry Makers: janakBody: 

Took setpoint and cycled. Did not swap trim card. Took setpoint on MQABE01 as well.

Log Number: 4520170Logbook(s): 

• ELOG

Entry Makers: janakBody: 

First BLV trip since this morning. There didn't seem to be an increase in noise this time, just a spike

Log Number: 4520164Logbook(s): 

• ELOG

Entry Makers: banksBody: 

Took temperature measurements in the NA and SA BPS and Trim rooms. Temps are the same as before. The NA trim and bps rooms temps are high but our systems in these areas are not affected. Will continue to monitor from home.

Log Number: 4520162Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Experiencing an upswing of GLDER warnings in the South Linac. They don't seem to be affecting beam

Log Number: 4520155Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Log Number: 4520154Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Lost beam on 1A SLM briefly, tuned with C beam and sent back.