Aggregator

Log Number: 4488645Logbook(s): 

• ELOG

Body: 

From Bruhwel: For the upcoming maintenance period (4/20 - 24) SSG will have some tasks we would like to perform while the machine is open. Most of these tasks are non-invasive and opportunistic tasks, so we would work around or postpone the tasks based on other higher priority work in the area if needed.

MPS Tasks:
North Linac - (1) MPS documentation checks mainly in the east arc region of NL (1 hr +/-)
(2) BLM predicted vs. actual current test (4 hr +/-)

South Access/Linac - (1) BLM predicted vs. actual current test (4 hr +/-)

BSY- (1) BLM predicted vs.

Log Number: 4488644Logbook(s): 

• ELOG

Body: 

From Bruhwel: For the upcoming maintenance period (4/20 - 24) SSG will have some tasks we would like to perform while the machine is open. Most of these tasks are non-invasive and opportunistic tasks, so we would work around or postpone the tasks based on other higher priority work in the area if needed.

ODH Tasks:
Hall B and C- (1) ODH sensor checks and calibration (1 hr +/-)

Log Number: 4488635Logbook(s): 

• ELOG
• LERFLOG

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

Date : 04-17-26
Time : 15:28:30
Day : Friday
Shift : Swing

Crew Chief : Richardson
Program Deputy: Ogur
Team : X
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: 4488633Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl05

Saved: lrichard 04-17-26 15:27:14 {A:i B:3 C:2 E:345 A=BS B=BS C=CW D=BS 0R08=16.89 No dumps in.

Log Number: 4488632Logbook(s): 

• ELOG

Entry Makers: mockBody: 

Ramped up to 17uA at Hall Cs request. Saw some IIX activity creeping up in the transport and been getting ratty target IC trips.

Adjusting SL gangphase helped null response.

Log Number: 4488628Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: CW beam to Hall B and C

Log Number: 4488629Logbook(s): 

• ELOG

Entry Makers: mockBody: 

Log Number: 4488624Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4488621Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4488620Logbook(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)

Log Number: 4488619Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4488613Logbook(s): 

• ELOG

Body: 

Spoke with task owner, job will take a couple hours at most. Targeting Monday 4/20 to perform. Once the PTW is on-issue this task is approved.

Log Number: 4488612Logbook(s): 

• ELOG

Body: 

Let's target Tuesday 4/21 next week. Looks like weather will be mild, good opportunity. Once the PTW is on-issue this task is approved.

Log Number: 4488611Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Hall B did a short test of various slit sizes to observe bleed through from Hall C. After the test they decided to stay at 16.3

Log Number: 4488610Logbook(s): 

• ELOG

Entry Makers: mockBody: 

Mismatched earlier in the shift. Took setpoint then but not anymore. Will need to reseat/swap card.

Log Number: 4488607Logbook(s): 

• ELOG

Entry Makers: mockBody: 

Hall B Halo started seeing some spikes. Stable now.
Took some energy out of the lock zone as well.

Log Number: 4488603Logbook(s): 

• ELOG

Body: 

SRF has confirmed this is compatible with their commissioning work on 2L25 during the YB Swap week as long as this task occurs on Owl shift. The SL will be in Power Permit Owl shifts Wednesday, Thursday, and Friday. Each an opportunity to perform this work, with a slight chance Friday Owl shift falls off as an opportunity.

Log Number: 4488602Logbook(s): 

• ELOG

Body: 

This task is complete.

Log Number: 4488599Logbook(s): 

• ELOG

Body: 

A replacement Macro-Magnetic s transformer has been installed in place of the failed unit and is operational. The failed transformer was sent back to the Vendor for evaluation. Without the transformer, there is no place to mount the rectifier stacks unless a large frame is built to hold them. A stand-by transformer is available, if needed.

Log Number: 4488592Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16751Title:
Hall B rapid access

Summary:
Hall B requested a rapid access to swap out a cable for their DAQ.Duration:
25 minutes

Time Down:
17-Apr-2026 12:36

Time Up: