Aggregator

Log Number: 4459989Logbook(s): 

• ELOG

Body: 

Done

Log Number: 4459988Logbook(s): 

• POLOG
• ELOG

Entry Makers: suleimanBody: 

Checked the wave plates of the four halls Intensity Attenuator (IA) systems looking for any labels on the plates.

Halls A, B, and C: have 1/2 wave plates. Hall B plate is labeled as such and Halls A and C have similar setup. These three systems have been on the laser table since early 2000s.

Hall D: has 1/10 wave plate. Hall D system was installed in Nov 2023 - see linked entry.

Log Number: 4459983Logbook(s): 

• ELOG

Body: 

Elogs https://logbooks.jlab.org/entry/4459978 https://logbooks.jlab.org/entry/4459980 https://logbooks.jlab.org/entry/4459981 have EPICS response plots

Log Number: 4459982Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was The output from the myRestore execution was as follows: Auto timestamp unavailable [iocha13]

Log Number: 4459981Logbook(s): 

• ELOG

Entry Makers: kprice

Log Number: 4459980Logbook(s): 

• ELOG

Entry Makers: kprice

Log Number: 4459978Logbook(s): 

• ELOG

Entry Makers: kpriceBody: 

Note: OMSL19 is a new sensor type, which displays overflow values while in alarm below a certain O2 percentage.

Log Number: 4459977Logbook(s): 

• CLOG
• ELOG
• SRFLOG

Entry Makers: weaksmcBody: 

Cooldown of 1L13 is complete.

JT in Auto set to fill to 30%

Shield will continue cooling overnight

Log Number: 4459976Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Monday October 20 through 18:00 Tuesday October 21 AES DC power Systems SAM 2025 Box Supply Work

2025-10-21 16:10 - Kevin Banks

Finished PM'

Log Number: 4459975Logbook(s): 

• ELOG

Body: 

Milling operation completed inside accelerator site Tue 21 October and working other campus locations.
Asphalt paving crews will finish Wed 22 - Thu 23 October inside accelerator site and targeting campus wide project completion Fri 24 - Mon 27 October.
Note that on the backside of Hall C gravel road will receive millings placement to improve access and suggest to avoid until JLAB spreads material - target 1-2 weeks.
Striping plan in que awaiting funding allocation.
Thanks for everyone's patience!

Log Number: 4459972Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2025-10-21 16:51:30 The output from the myRestore execution was as follows: iocsoftsafe systemEnum@2025-10-21 16:51 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -i iocsoftsafe (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: 4459971Logbook(s): 

• ELOG
• POLOG

Body: 

Small update.

Replacement controller for 2I00 was configured to the wrong logarithmic current offset. It is now set to the correct offset with the baseline at e-12 Amps.

Log Number: 4459970Logbook(s): 

• ELOG

Body: 

Finished PM's on Arc 9. Will move to ARC 5 on Thursday.

Log Number: 4459969Logbook(s): 

• ELOG
• SRFLOG

Body: 

Potential furlough
- Closing all possible valves
- Working with I&C, ACG on vacuum alert system

7S, 7R line valve closed and turbo pump cart removed

1L11 insulation vacuum reestablished

1L12
- Gate valve replaced on primary return
- He circuit pressurized to 3 atm

BSY
- Pole tips removed on sextupoles at girders 1C09, 1C10, 1C14, and 1C15

Log Number: 4459968Logbook(s): 

• ELOG
• POLOG

Body: 

the gamma SPC controller for VIP2I00 was showing a noisy signal for voltages over 3 kV, when we had run at 3.5 kV for some time before.
Switched in the controller that had been used for VIP1I03 instead. Need to determine if the noisy signal is due to an incorrect controller setting (pressure output instead of current), or if this controller is not working well on this pump. I'll follow up after the surprise holiday tomorrow
https://logbooks.jlab.org/entry/4459932

Log Number: 4459966Logbook(s): 

• ELOG

Body: 

Probe cables, arc det, /IR and stepper cables have all been adjusted for length topside into equipment racks and penetrations resealed with foam for ODH-0 . Larry working on LO cable measurements and termination and then we can start the chassis installations and connections on Thursday. 2.5w amp in FAB shop for power connection replacement repair. Techs: Chris K., Larry F., Alex S., and Adam S. and Max

Log Number: 4459965Logbook(s): 

• ELOG
• POLOG

Body: 

We conducted a series of tests with improved termination at the scope input as well as amplification of the photodiode signal downstairs:
https://logbooks.jlab.org/entry/4459928
https://logbooks.jlab.org/entry/4459934
https://logbooks.jlab.org/entry/4459939
https://logbooks.jlab.org/entry/4459958
The unphysical DC offset appears to be common-mode and exists before the amplifier, so neither the voltage gain nor the improved impedances is providing much SNR benefit right now. The bad S11 at RF due to impedance mismatch may be a red herring.

Log Number: 4459964Logbook(s): 

• ELOG

Body: 

Kevin and I still working at the South Access Building. I finished ARC 7 and working at ARC 3, will continue Thursday. Found that there are BNC's that the white part inside of them are brittle and some had broken. Also, on some BPS there are fans on the top where the 480V input goes in, the filters of those fans need to be replaced.

Log Number: 4459963Logbook(s): 

• ELOG
• POLOG

Body: 

Ran tests of current vs. voltage and hipotted VIP0I04A (choper 2) today.
https://logbooks.jlab.org/entry/4459938
Waiting for vacuum to recover from disturbances to see if it was effective

Log Number: 4459960Logbook(s): 

• ELOG

Body: 

21st October work:
- Hall C Hypernuclear magnet fiducialization;