Aggregator

Log Number: 4369923Logbook(s): 

• ELOG

Entry Makers: shrinerBody: 

dropped zone RF, restored without issue

Log Number: 4369922Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl04

Saved: anthony 05-05-25 16:41:33 {A:5 B:5 C:5 E:1060 A=BS B=BS C=BS D=BS 0R08=0.00 0R08 dump in. A B C dump(s) in.

Log Number: 4369921Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR IN TRAINING SIGN IN FORM OPERATOR:    Shriner
DATE:           05/05/2025
SHIFT:             Swing
MENTOR:         Vasilauskis

The operator has read the following:

Log Number: 4369914Logbook(s): 

• ELOG

Body: The following entry was placed in the Accelerator Bypassed-Interlocks Log (ABIL) Device: Hall D Tagger Tagger Dump Skid Flow Function: FSD for Hall D Aluminum Water Flow Location: FSD Node TG01 Ch. 5 Purpose: Trip Beam if proper flow readback out of limitations/ Flow is good but readback is bad. Elog#4369896 Exp.

Log Number: 4369913Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Yoon
DATE:             05/05/2025
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4369911Logbook(s): 

• ELOG
• POLOG

Body: 

the vacuum blips have not changed in frequency. I'm going to work to turn off an ion pump tomorrow to see if that is the root cause.
I'll do this under a new atlis.

Log Number: 4369910Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Anthony
DATE:             05/05/2025
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4369908Logbook(s): 

• ELOG

Body: 

Calibration has been performed on the ODH sensor OM17 in SA building. Proper ODH sensor read back has been verified, functioning as intended.

Log Number: 4369905Logbook(s): 

• ELOG
• SRFLOG

Body: 

Planned next scroll pump replacements, ion pumps to inspect during Wednesday maintenance day
VTP1L03 scroll pump scheduled for replacement on Wednesday
VIPAD00C
- Is buried deep in Hall D dump, hard to reach
- Is also high radiation area
- Exploring high potting options to fix without involved process of replacement
- More likely need to wait until 2025 SAM, is too involved to get done in a maintenance day

Log Number: 4369901Logbook(s): 

• ELOG

Entry Makers: bbarkerBody: 

Image is very snowy and wires aren't very visible.

Log Number: 4369896Logbook(s): 

• HDLOG
• ELOG

Body: 

As a recap, the skid tripped 3am. The installation crew tried to restart but it would not power up the pump. Facilities verified power was coming to the Sola power supply that powers the relay to turn the pump on. I&C found the Sola to be faulty and replaced it. The pump restarted but the flow switch did not show full flow and eventually reading -0.1 gpm (should be at least 12). Bern restarted the pump a few times and the flow meter reacted the same. Carroll Jones and I verified that the pump is pumping and the discharge pressure is about 75psi.

Log Number: 4369891Logbook(s): 

• ELOG
• LERFLOG

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

Date : 05-05-25
Time : 15:36:58
Day : Monday
Shift : Swing

Crew Chief : Richardson
Program Deputy: Sereno
Team : X
Arm : Anthony
Designated SSO: Yoon
LERF Operator:
Operators : Anthony, Shriner, Yoon

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

Log Number: 4369889Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Beam to B

Log Number: 4369888Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

Body:  Accelerator PHYSICS STUDIES RESTORE ACC DOWN OFF (SAM) Planned 6 0 0

Log Number: 4369869Logbook(s): 

• ELOG

Entry Makers: ywangBody: 

1400-1500 Optimized the injector with beam to ILD:
Figs. 1-4: CW beam from laser A, B, C and D, respectively
Figs. 5-7: B's, C's and D's orbits relative to A's, respectively

Log Number: 4369868Logbook(s): 

• ELOG

Entry Makers: mockBody: 

After Injector work, the halo rates in Hall B did not get worse (success!). While optimizing the rest of the injector and removing tail on SLMs.

Log Number: 4369866Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl07

Saved: ywang 05-05-25 15:10:44 {A:5 B:5 C:5 E:1060 A=Tune B=BS C=BS D=BS 0R08=0.00 0R08 dump in.

Log Number: 4369863Logbook(s): 

• ELOG

Entry Makers: mockBody: 

After Yan made some injector changes. He wanted to check how the halo rates in Hall B would respond. Spoke with the Hall as we told them beam would be off for a longer period of time than they were expecting (sorry!). The Hall agreed to accept some beam to compare halo rates. Starting off at 5 nA and ramping up to 325 nA.

Log Number: 4369862Logbook(s): 

• ELOG

Body: ACC=>VACUUM=>WEST_ARC=>ARC8=>VIP8A28 has been disabled in alarm handler

Dying pump. OPS-PR 4369858

Log Number: 4369858Logbook(s): 

• ELOG

Entry Makers: samariBody: 

Vacuum is climbing into alarm limits without surrounding vacuum degrading. It's currently right at the alarm threshold.