Aggregator

Log Number: 4549955Logbook(s): 

• ELOG

Body: 

13th Oct. work:
- prepare for Hall A MOLLER IHA1H14/IHM1H14 harp fiducialization

14th Oct. work map:
- (test lab) Hall A MOLLER IHA1H14/IHM1H14 harp fiducialization

Log Number: 4549953Logbook(s): 

• ELOG

Body: 

Work completed for now. Rotated the polarizer back to a horizontal polarization orientation. Check the optics and found both the inseratable mirror and window coating strip off in a band. This is caused by high energy synchrotron radiation. This was anticipated and will not fundamentally change how the SRI operates.

Log Number: 4549950Logbook(s): 

• ELOG
• INCLOG

Body: 

Found supply VIP8E00A would not upgrade firmware due to some serial coms issue. Replaced with ready spare.
Finished upgrading firmware in rack W101B05 with 18.12 firmware.
Will finish last 6 supplies in rack W102B03 tomorrow.

Log Number: 4549949Logbook(s): 

• ELOG

Body: 

Checklist completed for all shunt chassis and modules in racks W202B09, W202B10 (except for crate 2 ARC 4), and BS04B15.

The W202B10 ARC 4 crate was skipped because of complications removing thumb screws to access internal components on the backside of the chassis. This will need further evaluation to decide how to proceed for this one. All other racks in the system have now been checked.

This ATLis task will remain open until we decide what to do with the ARC 4 chassis. Some other minor findings will be discussed to plan on how to address them.

Chaudhary, Yoon, Janak, Delk

Log Number: 4549941Logbook(s): 

• ELOG

Body: 

YR & ZA in 1R flushing completed. Moving to ZA's in 2S tomorrow.

Log Number: 4549940Logbook(s): 

• POLOG
• ELOG

Entry Makers: mamunBody: 

Gun ramped to 210 kV under vacuum, without any fied emission.
We noticed teh HVPS current baseline increased at ~206 kV, step woise lowered gun HV and the current level restored background level at 100 kV. Will verify if this bakground shift is repeatable.

Log Number: 4549935Logbook(s): 

• ELOG
• POLOG

Tags: 

• Autolog

Body: 

Log Number: 4549934Logbook(s): 

• ELOG
• POLOG

Tags: 

• Autolog

Body: 

Log Number: 4549933Logbook(s): 

• ELOG
• INCLOG

Body: 

iocse21 calibration - https://logbooks.jlab.org/entry/4549932

Log Number: 4549932Logbook(s): 

• ELOG
• INCLOG

Body: 

Performed a X and Y calibration of the BPMs associated with iocinse21.

Low X and Y saturation flag for IPMAS02 and IPMAS04.

Log Number: 4549929Logbook(s): 

• ELOG

Body: 

Approved. Good to work once PTW is on issue. The remainder of this week would be a good time to start this task while MSS is waiting on rinse water results for the East Arc. When MSS continues flushing the East Arc, tentively picking back up again next week (10/19), this work will need to be coordinated with where MSS is flushing.

Log Number: 4549927Logbook(s): 

• ELOG
• CLOG
• ACELOG

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 cal router. Going to start removing the old router from the control room rack.
Latosky
Cumbia

Log Number: 4549926Logbook(s): 

• POLOG
• ELOG

Entry Makers: gramesBody: 

Nice work this morning...

1. Light equipment carried out and returned to source lab.

2. Remaining cage of equipment and Genie staged to be craned out.

3. Joe Thomas F&O installed two anchor for harnesses. Rich Kenny is bring temporary railing today. Final approvals expected Wed AM. Crane work tentively scheduled to happen after.

4. Scott Windham and Scott Higgins sleuthed chopping apertures, resolved with an ioc reboot.

5. Marcy sleuthed chopping chamber master slit and central plug, resolved by unkinking an air line.

6.

Log Number: 4549923Logbook(s): 

• POLOG
• ELOG

Entry Makers: shukuiBody: 

Re-calibrated A Laser attenuator, result attached. The previous one has lower value due to diagnostics in beam path.

Log Number: 4549922Logbook(s): 

• POLOG
• ELOG

Entry Makers: marcyBody: 

Found that an IOC reboot fixed communication to the chopping slits, though B is sometimes hesitating to move from the closed position. Doing home/resets helped get it moving again. All slits are retracted at this time.

Found a kinked air line in the input air to the chopper system solenoid system causing the master slit and central plug to go to their "fail safe" position of home, while the viewer remained in its "fail safe" position of retracted. Thanks to software and I&C for the help troubleshooting.

Log Number: 4549920Logbook(s): 

• ELOG

Entry Makers: shukuiBody: 

Laser A attenuator Calibration

Log Number: 4549916Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Anthony
DATE:             10/13/2026
SHIFT:               Day

The operator has read the following:

• ELOG
• PD Shift Plan
• Radiation Surveys for PSS Segments in Controlled Access
• PSS Log

Log Number: 4549903Logbook(s): 

• ELOG
• BUBBLELOG
• DEGRADERLOG
• GTSLOG
• HDICELOG
• MOTTLOG
• PEPPOLOG
• POLOG
• UITFLOG
• UITFMOTTLOG

Body: 

PTW-12046 is in the system. Work will be done on October 14.

Log Number: 4549900Logbook(s): 

• ELOG

Body: 

pre job brief complete.
Task approved by work supervisor.

Log Number: 4549896Logbook(s): 

• ELOG

Body: 

East arc dipole stacks 32, 31, 30, 29, 28, and 27 are complete for initial checks. All stacks will be checked again post descaling. Measurements are being fed into a spreadsheet for theoretical best case vs measured values. Data will be made upon completion of first checks.