Aggregator

Log Number: 4461973Logbook(s): 

• ELOG

Body: 

Same task will occur on 1L10 next week. PTW 9239 being submitted

Log Number: 4461972Logbook(s): 

• FMLOG
• ELOG

Tags: 

• Readme

Entry Makers: moserBody: 

A weld crack has been found on the North Cooling Tower for the West Arc LCW. Facilities is reducing the West Arc LCW flow at this time to reduce build-up of heat and the crack worsening. They'll then begin T/Sing. ATLis forthcoming.

Log Number: 4461971Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2025-11-20 09:15:12 The output from the myRestore execution was as follows: iocsl05rfcry Rf6Cryo Execute: burtwb -f /cs/opshome/burt/REBOOT/rf/snap/iocsl05rfcryheatdisvINIT.snap (success) Execute: burtwb -f /cs/opshome/burt/REBOOT/rf/snap/iocsl05rfcryheatmodemanual.snap (success) Pause: 8 second(s) Rf06Cryo_heatset@2025-11-20 09:15 2(2) restored Pause: 8 second(s) Rf06Cryo_heatmode@2025-11-20 09:15 1(1) restored Execute: burtwb -f /cs/opshome/burt/REBOOT/rf/snap/iocsl05rfcryheatdisv.snap (

Log Number: 4461970Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: Event/action ID: 3 [mod.type.prop.ioc.macaddress]
Deployment: ced
Workspace: ops
Changes:
pc104test2.macaddress

Log Number: 4461969Logbook(s): 

• SRFLOG
• CLOG
• ELOG

Entry Makers: wisslerBody: 

Southeast Linac JT valves for 2L05-2L13 (2L02-2L04 are warm) were manually set to 5% less than their current position ahead of the Southeast Linac power outage. The JTs will be frozen during the outage so this was done to avoid overfilling.

Cryomodules will be refilled as necessary after the power outage.

Log Number: 4461968Logbook(s): 

• ELOG

Tags: 

• MCC8am

Body:  PD SUMMARY Summary

INJ:

- Getting ready for HCO
-Preparing for Wien cooling review

Log Number: 4461966Logbook(s): 

• ELOG
• LERFLOG

Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 11-20-25
Time : 07:55:29
Day : Thursday
Shift : Day

Crew Chief : Blackshaw
Program Deputy: Rothe
Team : E
Arm : RadCon
Designated SSO: NA
LERF Operator:
Operators :

This stamp certifies that the above Crew Chief has read/reviewed/received the following:

Log Number: 4461963Logbook(s): 

• ELOG

Body: 

May run into DC Power jumpering out shunt resistors. PTW on-issue. Task approved.

Log Number: 4461960Logbook(s): 

• ELOG

Body: 

hi-potted cables which resulted in no indication of a fault. Next step would be to access the tagger dump with radcon approval, examine the cable and hi-pot just the heater tape.

Log Number: 4461959Logbook(s): 

• ELOG

Body: 

19th November work:
- prepare Hall D goniometer survey;
- West Arc stand 9 check and magnet alignment.

20th November work map:
- Hall D goniometer survey;
- continue West Arc stand 9 check and magnet alignment.

Log Number: 4461958Logbook(s): 

• POLOG
• ELOG

Body: 

Getting ready for HCO
Preparing for Wien cooling review

Log Number: 4461956Logbook(s): 

• ELOG
• SLOG

Tags: 

• MCC8am
• Software and Controls

Body: 

FSD control updates in E3 & 2L03 complete

Log Number: 4461954Logbook(s): 

• ELOG
• SRFLOG

Body: 

Completed Qo's for cavities 1, 3 and 4.
Cav 1: low field Q = 7.2E9, Qo at 21 MV/m = 5.9E9
Cav 3 : low field Qo = 9.32E9, Qo at 18 MV/m = 6.1E9
Cav 4 : low field Qo = 1.1E10, Qo at 21 MV/m = 7.5E9

Log Number: 4461953Logbook(s): 

• ELOG
• RFLOG

Body: 

The 4-20 mA signal conditioning boards attached to each of the heater relays Have been removed. The control wires are now directly wired to the heater SSRs. New relays were available and installed in place of the old relays. the Chassis was reinstalled and its operation was validated.

Log Number: 4461952Logbook(s): 

• ELOG

Body: 

Maintenance:
- N/A
Projects:
- CUP Upgrade: Continuing construction. Factory startup is ongoing.

Log Number: 4461951Logbook(s): 

• ELOG

Body: 

The initial refrigerant charge was added to Chiller 60-CH-4 today. The charge will be topped off Friday during the factory startup process. The initial refrigerant charge will be added to Chiller 60-CH-3 tomorrow in preparation for Friday factory startup. Controls point to point checks continued.

Log Number: 4461950Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Tuesday November 18 through 18:00 Wednesday November 19 AES DC power Systems Replace External Fan Power Supply for NL01B07

2025-11-19 14:11 - Mark Kissinger

Log Number: 4461948Logbook(s): 

• ELOG

Body: 

Cable terminations are completed at the cameras side.

Log Number: 4461947Logbook(s): 

• ELOG

Body: 

Disconnected klystron and pulled back to reveal bad o-ring seal with metal fragments embedded. Snooped without Marmond clamp and leaked all around. Cleaned out channel and put new o-ring in and resealed and tested. Held 1.5 PSI for over an hour and then developed a very slow leak again. Found a regulator plug and the source regulator leaking pretty good at higher pressures. Had trouble getting line out off upper source regulator with fluorescent light fixture directly in front of the regulator line. Will need higher ladder and long reach to replace and tube tomorrow and retest.

Log Number: 4461946Logbook(s): 

• ELOG
• INCLOG

Entry Makers: dsjamesBody: 

I&C requested that MSS turn on helium supply to Hall C. Purpose to verify the helium exhaust system functionality after pressure switches replaced. System check out checked good. Upon completion requested MSS turn off helium supply to Hall C.