Aggregator

Log Number: 4547846Logbook(s): 

• ELOG
• POLOG

Body: 

Good progress today - removed electrode from tunnel, found an systematic way to determine rotation in lerf lab (thanks Ben Schaumloffel and Max Bruker). Ready for S&A to remeasure tomorrow and verify we're now good to reinstall. Next tunnel vacuum work anticipated Monday or Tuesday, but may shift with several things still to determine.

Log Number: 4547844Logbook(s): 

• ELOG

Body: 

Alignment of the remaining four pumps was completed. Pump vibration analysis was completed. A time to reconfigure back to five pump operation will be coordinated with Cryogenics to minimize possible impacts to ESR complex operations and complete this work task.

Log Number: 4547843Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Wednesday September 16 through 18:00 Thursday September 17 AES DC power Systems SAM 2026 Box Supply Work Preventative Maintenance/interlock checks

2026-09-17 17:09 - Kevin O&

Log Number: 4547842Logbook(s): 

• ELOG

Body: 

Updated firmware for the following PLC hardware:
Hall B (Systems A and B): Ethernet Switches
Hall C (Systems A and B): Ethernet Switches
BSY (Systems A and B): Ethernet Switches
SL (Systems A and B): Ethernet Switches (Partial), Interface Modules (System A only)

Log Number: 4547840Logbook(s): 

• ELOG
• SLOG

Tags: 

• MCC8am
• Software and Controls

Body: 

Installed single mode fiber trunk from CHL control room down to the equipment room. Landed both ends of fiber into the fiber distribution chassis's (FDU). Tested CAT 6 UTP cables (30 cables) Latosky Cumbia
Assisted I&C Troubleshooting CAMAC issues in the East Arc
Kick off meeting with I&C on the Next Generation BPM's

Log Number: 4547839Logbook(s): 

• ELOG
• DCLOG

Body: 

Working under PTW - 11789. All high-power load connections have been removed from BSY1C. The DCCT cart has been moved back to Building 36. The high-power load was moved to the south access. All work for BSY1C is complete up to interlock checks, which will occur after all PMs are complete and closer to HCO.

-Banks, O'Brien

Log Number: 4547835Logbook(s): 

• POLOG
• ELOG

Entry Makers: brukerBody: 

Introduced 1 degree of yaw misalignment into the R30-6 cathode by rotating everything else around the insulator axis.

Figure 1: No significant effect on the beam centroid, but note that the coordinate system is with respect to the photocathode normal, which is unrotated in this simulation, so the beam angle w.r.t. the beam pipe will be 1 degree larger (17.4 mrad). This would be noticeable but could still be zeroed with correctors.

Figure 2: This misalignment is beneficial from an IBB standpoint: ions above 180 keV or so are completely removed from the emission area.

Log Number: 4547834Logbook(s): 

• ELOG

Body: 

I believe this task was supplanted by others. If not, please re-submit.

Log Number: 4547833Logbook(s): 

• ELOG

Body: 

Cryo colleagues, please see previous comment from ACE regarding impact of this outage to CHL/CTF networks.

Log Number: 4547831Logbook(s): 

• ELOG

Body: 

Power supply inspections completed for NL01B09 and NL01B11 units. For this zone, all that remains is magnet connection inspections. Next will be zone NL27 power supplies and magnets.

Janak, Chaudhary, Delk

Log Number: 4547829Logbook(s): 

• ELOG

Body: 

Good afternoon,

Log Number: 4547828Logbook(s): 

• ELOG

Body: 

U-tubes removed from 1L09 and 1L10.

Log Number: 4547827Logbook(s): 

• ELOG

Body: 

Non-powered PM work was completed for 10 Amp trim rack W102B9,10,11,12/ W202B13,14,15,16,17

chumphry,diggs,richardson

Log Number: 4547826Logbook(s): 

• ELOG
• CLOG
• ACELOG

Body: 

Installed single mode fiber trunk from CHL control room down to the equipment room.
Landed both ends of fiber into the fiber distribution chassis's (FDU).
Tested CAT 6 UTP cables (30 cables)
Latosky
Cumbia

Log Number: 4547825Logbook(s): 

• ELOG

Body: 

Hall C Cable way: The old cables for both cameras, located at the top and bottom of the cable way, have been removed. New network cables have been pulled from each camera back to the junction box.

Log Number: 4547822Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-09-17 15:10:14 The output from the myRestore execution was as follows: iocwa1r rfSep_iocwa1r@2026-09-17 15:10 2(2) restored systemEnum@2026-09-17 15:10 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -i iocwa1r (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: 4547820Logbook(s): 

• ELOG

Body: 

om08 and om20 returned to service.

om08 was mistakenly called om07 in the comment made on 2026-09-16. this was a typo and om08 is the sensor that was replaced, alongside om20.

Log Number: 4547812Logbook(s): 

• ELOG
• INCLOG

Body: 

Both the HV and convectron cables have been terminated downstairs.

Log Number: 4547810Logbook(s): 

• ELOG
• POLOG
• DEGRADERLOG

Body: 

Resolved already by Tony (thank you!) and checked by Amy, Dennis and Victor,

Hi Joe,

The beam dragging at IHA0L03 did disappear, checked early in the run: https://logbooks.jlab.org/entry/4468626

Looks like a new harp was installed: https://logbooks.jlab.org/entry/4456728

Amy

Log Number: 4547809Logbook(s): 

• POLOG
• ELOG

Entry Makers: kachwalaBody: 

The attached file contains summary and analysis of IA driver characterization carried out in CEBAF laser room using Hall D laser on September 16th 2026. The 10/90 rise/fall time is less than 10 μs
The maximum ringing is ~21.34 % of the change in two intensity levels.