Aggregator

Log Number: 4464616Logbook(s): 

• ELOG
• UITFLOG

Tags: 

• Readme

Body: [figure:1] Always check the Authorization web application for the latest status: JLab Authorization Manager

Log Number: 4464615Logbook(s): 

• POLOG
• ELOG

Body: 

Both seed lasers and amplifiers have been turned off for the holiday break.Fig.1 before off, Fig.2 after off.

Log Number: 4464614Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

Responded to site to assist CIS powering down laser amplifiers (SME did not have channel access).

Log Number: 4464613Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Monday December 22 through 18:00 Tuesday December 23 AES RF Systems Upgrade 2L03 to a C75 zone.

2025-12-23 11:12 - Evonda Valentine

The KRRP Chas

Log Number: 4464605Logbook(s): 

• ELOG
• SRFLOG

Body: 

1L25 - replaced scroll pump, turbo pump at full speed with gate valve open

No vacuum issues noted after house power outage in North Linac

Log Number: 4464604Logbook(s): 

• POLOG
• ELOG

Body: 

- Hall B laser phase is still a mystery (controlled by Hall A laser phase).
- Wien chiller is huge source of EM noise.
- Powered down injector systems and put in safe state.

Log Number: 4464596Logbook(s): 

• MOLLER
• ELOG

Tags: 

• Moller
• PD

Entry Makers: jonesgaskelldwinesdougberdnikciprianBody: 

Hall A techs moved seven-sided ring to Hall. EIC team worked on MOLLER LCW system install. Hall D team worked on pion donut assembly.

Log Number: 4464564Logbook(s): 

• ELOG

Body: 

Complete BLM hot check out for: BLMWA1A, BLMWA2B, BLMSL01, BLMEA1A. Continue working on FSD hot check out in SL.

Log Number: 4464562Logbook(s): 

• ELOG

Entry Makers: dchriBody: 

Log Number: 4464557Logbook(s): 

• ELOG
• LERFLOG

Body: 
THOMSAS JEFFERSON NATIONAL ACCELERATOR FACILITY
MACHINE CONTROL CENTER UNSTAFFED STAMP

Date : 12/23/2025
Time : 12:08

Crew Chief On-Call : Forman
Program Deputy : Forman

The MCC is unstaffed. The following satisfies AOD and LOD requirements to leave the control room unstaffed:

SSO Comments: Hall A under construction/PSS offline

Log Number: 4464556Logbook(s): 

• POLOG
• ELOG

Body: 

As Nick has correctly pointed out, the time range of the BPM data taken on 12/19/25 with chiller on vs. chiller off only contains enough data for one period of 120 Hz, not 60 Hz. I missed this during the measurement. As a result, one cannot tell if 60 Hz is present in the data or not; the visible component is 120 Hz. Sorry for the confusion.

This doesn't change the conclusion; however, should the magnetic field probe be insensitive to 120 Hz, it may not see the field.

Log Number: 4464555Logbook(s): 

• POLOG
• ELOG

Entry Makers: suleimanBody: 

Max's beam studies found EM noise on the beam around 1I02 region. When I did my last 60 Hz survey, it turns out the chiller was off.

Today, with Jay, we did search for 60 Hz noise. The chiller is huge source and by the beamline, the noise is still large - see photos 1-3.

The LO chiller in the Injector Service Building is much better, about two orders of magnitude smaller - see photo 4.

Log Number: 4464554Logbook(s): 

• ELOG

Body: INJECTOR has been disabled in alarm handler

holiday shutdown

Log Number: 4464553Logbook(s): 

• ELOG
• RFLOG

Body: 

The KRRP Chassis as well as the cross connect side of Cable 3170 ( The Permissive Cable) have been installed as well.

Log Number: 4464552Logbook(s): 

• POLOG
• ELOG

Entry Makers: suleimanBody: 

See attached checklist. Shukui will take care of the laser Seeds and Amplifiers.

Log Number: 4464551Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

Log Number: 4464550Logbook(s): 

• ELOG

Entry Makers: diggsBody: 

I power down the Injector 10 Amp and 20 Amp system for the holiday break. Will restore in the New Year 2026....Merry Christmas to All....

Log Number: 4464549Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

Log Number: 4464548Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

Log Number: 4464547Logbook(s): 

• ELOG

Entry Makers: eformanBody: