Aggregator

Log Number: 4550031Logbook(s): 

• POLOG
• ELOG

Entry Makers: marcyBody: 

Verified chopper viewer actuated and inserted properly after air line issues yesterday. All chopper systems are good.

Log Number: 4550022Logbook(s): 

• ELOG
• SLOG

Body: 

A viewer application has been created to make it easier to access historic entries from the 6GeV era preserved in the old logbooks database. It contains log entries recorded between 2001 and 2013. When the current logbook was initially stood up in 2013, the most recent 5 years of data was imported, so data from 2008 - 2013 overlaps and is available from the current logbook application as well as this historic data viewer.

https://opsweb9.acc.jlab.org/elog6gev/ (the URL has been added to Useful Links)

Log Number: 4550021Logbook(s): 

• ELOG

Body: 

Magnet testing in the east arc is scheduled to start afternoon of 10/15

Log Number: 4550020Logbook(s): 

• ELOG

Body: 

Calibrations have been completed in all Hall D locations; will continue in the GTS and CMTF.

Log Number: 4550019Logbook(s): 

• ELOG

Body: 

Completed east arc BCM Cavity tuning.

Log Number: 4550018Logbook(s): 

• ELOG

Body: 

Task is complete.

Log Number: 4550017Logbook(s): 

• ELOG

Body: 

Task is complete.

Log Number: 4550016Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-10-14 08:28:39 The output from the myRestore execution was as follows: iocsoftwatlowtcdev1 systemEnum@2026-10-14 08:28 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -i iocsoftwatlowtcdev1 (success) PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 Procedure return status: Success

Log Number: 4550015Logbook(s): 

• ELOG

Tags: 

• MCC8am

Body:  PD SUMMARY

CIS: 

Log Number: 4550010Logbook(s): 

• HDLOG
• ELOG

Body: 

TAGM Fiber bundle fabrication
3D prototyping
BCAL Chiller PM

Log Number: 4550009Logbook(s): 

• ELOG

Body: 

Flushing of ZA's 7S03 & AS04 septa's planned for today

Log Number: 4550008Logbook(s): 

• ELOG
• LERFLOG

Body: 
THOMSAS JEFFERSON NATIONAL ACCELERATOR FACILITY
MACHINE CONTROL CENTER UNSTAFFED STAMP

Date : 10/13/2026
Time : 23:24

Crew Chief On-Call : Forman
Program Deputy : Mock

The MCC is unstaffed. The following satisfies AOD and LOD requirements to leave the control room unstaffed:

SSO Comments: PLC Error/Unknown states expected

Log Number: 4550007Logbook(s): 

• POLOG
• ELOG

Entry Makers: mamunBody: 

Today we did following activities:
- HV vacuum conditioning confirmation
- Removed the HV conditioning resistor tank and connected R30-6 gun sdirectly to the HVPS
- After conditioning resistor tank removal, demonostrated field emission free HV soaking at 210 kV
- Repeated ramp up-soak-ramp down cycle by taking gun to 200 kV with different ramp rates of 10, 20, 30, 40, and 50 kV/min and demonstrated field emission free operation.

Plan for tomorrow:
- Remove the conditioning puck from the gun and insert a GaAs puck in the Gun
- Soak the gun at 200 kV for ~ a shift.

Log Number: 4550006Logbook(s): 

• POLOG
• ELOG

Entry Makers: bschaumlBody: 

We ramped the voltage from 0 to 200 kV and back several times at increasing ramp rates to ensure the system can handle the nominal settings. There are occasional vacuum blips when the supply hits zero, but everything is otherwise behaving well. That's all for tonight.

Log Number: 4550005Logbook(s): 

• ELOG
• POLOG

Tags: 

• Autolog

Body: 

Log Number: 4550004Logbook(s): 

• ELOG
• SLOG

Tags: 

• MCC8am
• Software and Controls

Body: 

Single mode fibers run and patched in for the South Linac segment (iocch2 and iocch2a). Moved the last segment (SL, iocch2 and iocch2a) from old router to new router. We are completely migrated to the new chl router. Going to start removing the old router from the control room rack. Latosky Cumbia
Assisted TroubleShooting Chopping Aperture Controls and Insertable Controls in the Injector

Log Number: 4550003Logbook(s): 

• POLOG
• ELOG

Entry Makers: mamunBody: 

Gun soaked for 2 hrs at 200 and 210 kV. Ramping down for different ramp up rate excercise.
Throughout the soak all the DecRAD counts were in background noise level. No vacuum activity observed. HVPS current was stable and in background level. We will excercise different ramp up rate up to 50 kV/min next. Tomorrow, we would like to swap the conditioning puck with a GaAs puck and soak the gun at 200 kV for ~ a shift.

Log Number: 4550002Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Monday October 12 through 18:00 Tuesday October 13 AES DC Power Systems SAM 2026 Box Supply Work Preventative Maintenance/interlock checks

2026-10-13 16:10 - Kevin O'Bri

Log Number: 4550001Logbook(s): 

• POLOG
• ELOG

Entry Makers: brukerBody: 

Figure 1: cable connector removed from resistor tank (gun side) after cleaning
Figure 2: receptacle of resistor tank (gun side) after cleaning
Figure 3: gun insulator before cleaning
Figure 4: gun insulator after cleaning
Figure 5: finished cable connection from gun to HVPS

Found no evidence of any bad cable connections or contamination. The leakage current observed before remains unexplained (so far).

Log Number: 4550000Logbook(s): 

• POLOG
• ELOG

Entry Makers: shukuikachwalaBody: 

We were able to finish the remaining A Laser HCO items (beam DOCP measurement and attenuator calibration) before tunnel sweep. I will complete and post the report in the morning.