Aggregator

Log Number: 4474396Logbook(s): 

• ELOG

Body: ACC=>RADCON=>BSY has been disabled in alarm handler

Troubleshooting

Log Number: 4474395Logbook(s): 

• ELOG

Body: ACC=>ODH=>SOUTH_LINAC has been disabled in alarm handler

Troubleshooting

Log Number: 4474394Logbook(s): 

• ELOG

Body: ACC=>ODH=>NORTH_LINAC has been disabled in alarm handler

Troubleshooting

Log Number: 4474372Logbook(s): 

• POLOG
• ELOG

Body: 

Scope shots for RTP transition properties at 240 Hz

Log Number: 4474367Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
2L09-6
Username: kerns
Date/Time: 03-04-26_16:18:41
RF Status: Good
Tuner Status: Good
Comment: Larry King cleaned and checked IR. 4.9 V is good.
Special Instructions:

Maintenance Tag: Component: Other

Log Number: 4474365Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-03-04 16:05:19 The output from the myRestore execution was as follows: iocsofthrtbt systemEnum@2026-03-04 16:05 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -i iocsofthrtbt (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: 4474363Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-03-04 16:05:19 The output from the myRestore execution was as follows: iocsofthrtbt systemEnum@2026-03-04 16:05 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -i iocsofthrtbt (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: 4474362Logbook(s): 

• POLOG
• ELOG

Body: 

Scope shots for RTP transition properties at 1920 Hz

Log Number: 4474361Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Schaumloffel
DATE:             03/04/2026
SHIFT:               Swing

The operator has read the following:

Log Number: 4474359Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Thomas
DATE:             03/04/2026
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4474344Logbook(s): 

• ELOG
• SRFLOG

Body: 

VBV1L11A - valve body replaced, no more hissing

2L03
- Air solenoid plates installed, working
- Solenoid cables rerouted, plugged in, verified working (I&C)
- Pumped on 1.33" CF right angle valve, pinched off - still reading higher VIP2L03A pressures

2L25
- Air solenoid plates installed, working
- Solenoid cables rerouted, plugged in, verified working (I&C)

Log Number: 4474341Logbook(s): 

• ELOG
• LERFLOG

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

Date : 03-04-26
Time : 15:35:10
Day : Wednesday
Shift : Swing

Crew Chief : Forman
Program Deputy: Schoene
Team : F
Arm : RADCON
Designated SSO: Schaumloffel
LERF Operator:
Operators : Schaumloffel, Thomas

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

Log Number: 4474334Logbook(s): 

• ELOG

Entry Makers: bjacobBody: 

Looks to be an issue with the ioc that allows the honeywell system communicate with Epics. North and Soth Linac flow rates reading as zero which doesn't seem correct.

Facilities is taking a look into the issue now.

Log Number: 4474332Logbook(s): 

• ELOG

Body: 

Powered off Trim Rack NL27B20
Began troubleshooting.
Will continue troubleshooting on next maintenance day

- Kissinger, Crespo, Delk

Log Number: 4474328Logbook(s): 

• POLOG
• ELOG

Body: 

Scope shots for RTP polarization measurements.

Log Number: 4474327Logbook(s): 

• ELOG

Body: 

JLab-PTW-10117 Surrendered and Closed

Log Number: 4474326Logbook(s): 

• ELOG

Body: 

Magnet was disconnected
Installation group repaired leak
Magnet reconnected

Work Complete.

- Kissinger, Crespo

Log Number: 4474322Logbook(s): 

• ELOG

Body: 

4th March work:
- 2L25 cryomodule 2B alignment
- 2L25 and 2L26 warm girder regions 2B alignment

5th March work map:
- Hall C target alignment

Log Number: 4474321Logbook(s): 

• ELOG

Body: 

VIP2L03A. Pumped and pinched off possible virtual leak with No success. VIP2L03A pressure remained the same. Also sprayed isopropanol on all copper gasket connection points & bellows as well as 1.33" mini CF bonnet seal.

Log Number: 4474320Logbook(s): 

• POLOG
• DEGRADERLOG
• ELOG

Entry Makers: gramesBody: 

I used today's MD to improve mu-metal wraps in the 0L region between the booster and cryomodule. Mu-metal is there to reduce the earth's field by factor of 2-3 times over a long span where the beam energy is low. Still, bet if it's applied uniformly and concentrically with the beampipe. This is b/c the Earth's field doesn't disappear, it's just rerouted (div.B=0).

I doubt anyone will notice, but if a tiny bit of steering is required, this could be the reason.