Aggregator

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.

Log Number: 4546496Logbook(s): 

• ELOG
• RFLOG

Body: 

Testing commenced today after communicating with crew chief. Pass 1 ran successfully at 1kW. Pass 5 Vertical, Cavity 2 will be tested next week.

Log Number: 4546491Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-09-04 14:27:25 The output from the myRestore execution was as follows: iocsoftinspcevdp systemEnum@2026-09-04 14:27 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: 4546490Logbook(s): 

• ELOG

Body: 

4th Sept. work:
- Hall A MOLLER TM0 final fiducialization.

8th Sept. work map:
- (LERF) fiducialization of the R30-6 Electrode

Log Number: 4546489Logbook(s): 

• ELOG
• INCLOG

Entry Makers: mmueller

Log Number: 4546488Logbook(s): 

• ELOG
• INCLOG

Body: 

Completed fabricating new convectron adapter cables for new controllers.
Now that tunnel is open connectors downstairs for these gauges will be terminated with new pinout next week.

Log Number: 4546487Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-09-04 13:56:04 The output from the myRestore execution was as follows: iocsoftinspcevdp systemEnum@2026-09-04 13:56 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: 4546485Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-09-04 13:30:16 The output from the myRestore execution was as follows: iocsoftinspcevdp systemEnum@2026-09-04 13:30 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: 4546483Logbook(s): 

• ELOG

Body: 

All 8 circulators now installed and klystrons reconnected. Next step will be getting new LCW adapters installed on the circulators to fit existing hoses and verifying no leaks.

Log Number: 4546482Logbook(s): 

• ELOG
• POLOG

Body: 

the HV cable, required to be removed before beginning the vacuum work described in this ATLis, has been completed. https://logbooks.jlab.org/entry/4546475
Magnets disconnected by DC power. I moved the alignment brackets into the cabinet as well, and we'll need to make sure to protect the terminal blocks before baking. Starting RGA and extractor gauge measurements to run over the weekend and be recorded next week.

Log Number: 4546481Logbook(s): 

• ELOG

Entry Makers: moserBody: 

Figure 1: Known issue -- ground water intrusion in East Arc around station 1880.

Figure 2/3: New issue -- small leak (drip every 10-20s) from hose fitting / attachment point for LCW hose for JA9A20 dipole.

Figure 4/5: New issue -- small leak (drip every 10-20s) from hose fitting / attachment point for LCW hose for JA9A21 dipole.

Figure 6: New issue -- SE corner sump pump. At the ~30deg bend away fro the wall there is a leak that is leading to the puddle seen on the ground. Will submit an F&O work request.

Figure 7: East side of SL. Ice ball. Not an infrequent occurrence in this spot.

Log Number: 4546479Logbook(s): 

• ELOG
• POLOG

Body: 

Cable removed. Both cable and ceramic were cleaned. Cable has an Admin label stating not to connect to gun.

Log Number: 4546478Logbook(s): 

• ELOG

Body: 

All magnets disconnected and removed off the beam line. All magnet cables have a Magnet Verified De-Energized label on them.
The magnets are stored in the 1st cabinet to the left beside the work station.

Diggs, Richardson, Humphry

Log Number: 4546477Logbook(s): 

• ELOG

Body: 

Measured voltages of all crates in the main ring except the injector. The remaining crates will require two power cycles to facilitate their measurement. one to insert the card and another to remove it. The IOCs below will be cycled to facilitate this on tuesday
IOCIN4, IOCIN1B, IOCSE12, IOCSE19, and IOCSE4.

two crates require new fan trays
IOCW3SE1, and IOCEA3. fan trays will be replaced tuesday following the injector measurements.

Log Number: 4546476Logbook(s): 

• ELOG

Entry Makers: janak

Log Number: 4546475Logbook(s): 

• POLOG
• ELOG

Entry Makers: suleimanBody: 

Mamun and Jessica removed and cleaned the HV cable. Then cleaned the ceramic.

All baked line valves are in Shut-Override (no EPICS controls).

Log Number: 4546474Logbook(s): 

• ELOG

Body: 

Yesterday, we performed local calibration of OM02, OM03, OM04, OM05, OM09 and OM11 in the Inj. and NL to 20.9%.
Mike and Liliia