Aggregator

Log Number: 4546540Logbook(s): 

• ELOG

Body: 

Covered by https://tasklists.jlab.org/atlis/tasks/121166 and https://tasklists.jlab.org/atlis/tasks/121168

Log Number: 4546539Logbook(s): 

• ELOG

Body: 

Log Number: 4546538Logbook(s): 

• ELOG

Body: 

Please re-submit if necessary.

Log Number: 4546537Logbook(s): 

• ELOG

Body: 

Pleaes re-submit if necessary.

Log Number: 4546536Logbook(s): 

• ELOG

Body: 

Done under LERFList.

Log Number: 4546535Logbook(s): 

• ELOG

Body: 

PTW on-issue. This task applies to SAM26. Please comment ahead of time when working under it.

Log Number: 4546534Logbook(s): 

• ELOG

Body: 

Log Number: 4546533Logbook(s): 

• ELOG

Body: 

Please re-submit if necessary.

Log Number: 4546532Logbook(s): 

• ELOG

Body: 

Make sure the relevant PTW is on-issue at each stage of this work. Scheduled for 9/22-23. Added to SAM Cal. Approved.

Log Number: 4546531Logbook(s): 

• ELOG

Body: 

Aiming to do this during SLSB (B02) Panel PMs, tentatively slated for 9/22+23. Added to SAM Cal for these dates.

Log Number: 4546530Logbook(s): 

• ELOG

Body: 

PTW on-issue. Tunnel open. Task approved. As we get closer to performing this work in November please comment before proceeding and I'll add as much to the SAM Cal.

Log Number: 4546511Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Thursday September 03 through 18:00 Friday September 04 AES DC power Systems Disconnect Magnets in the Injector for Vacuum and Bake work for SAM26

2026-09-04 11:09 - Eric Dig

Log Number: 4546510Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-09-04 17:07:27 The output from the myRestore execution was as follows: iocsoftinspcevdp systemEnum@2026-09-04 17:07 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -i iocsoftinspcevdp (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: 4546508Logbook(s): 

• POLOG
• ELOG

Entry Makers: marcyBody: 

RGA turned on in prep chamber, separated by valve from HV chamber. Fig 1 shows vacuum activity when turning on, then shows much more vacuum signal when I did a 60 second degas of the filament to reduce the background due to gasses adsorbed on the RGA itself.
Set to run over the weekend on analog signal only - CEM will get turned on next week for more sensitivity.

Extractor gauge reading 2.7e-10 at 16:50, continuing to drop (Fig 2

Log Number: 4546506Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4546505Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4546504Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Injector in Restricted Access. NL, SL, and BSY in Power Permit

Log Number: 4546503Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4546499Logbook(s): 

• ELOG
• POLOG

Body: 

extractor gauge turned on in HV chamber for vacuum evaluation prior to gun vacuum work: https://logbooks.jlab.org/entry/4546497

Log Number: 4546497Logbook(s): 

• POLOG
• ELOG

Entry Makers: marcyBody: 

Extractor gauge turned on in the HV chamber. Running this over the long weekend will degas the gauge and allow us to characterize the vacuum in the chamber prior to the vacuum work the week of Sept 14. As expected, there was an increase in ion pump pressure when the gauge was turned on due to the hot filament outgassing. Gauge reads 6.74e-10 Torr after 40 minute warm up, still dropping.

Still searching for a cable that works with this older laptop to turn on the RGA, RGA may have to wait until next week to warm up.