Aggregator

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.

Log Number: 4474316Logbook(s): 

• ELOG

Body: 

ARC7 was locked out for work done under PTW-10105. Visual inspection of the magnet and shunt leads was performed and confirmed correct. Inside the shunt chassis, the cabling coincided with the connections checked downstairs. The shunt chassis for ARC7 was still the prime suspect and has been replaced. Channel addresses for the shunt channels and chassis jumpers have been changed and verified with the old chassis. Once the chassis was changed, the shunt chassis interlocks were again checked with the box supply under control power.

Log Number: 4474314Logbook(s): 

• ELOG

Body: 

Task complete

Log Number: 4474313Logbook(s): 

• ELOG

Body: 

VBV2L25A and VBV2L25B New Air Plates and Airlines are installed + All Metal Position indicator installed; Task Complete

Log Number: 4474312Logbook(s): 

• ELOG

Body: 

VBV1L11A - valve body was successfully swapped out. The old valve body had o-ring damage inside which caused air to come through the body of the valve. No air hissing on open or closed after completion of the work.

Log Number: 4474311Logbook(s): 

• ELOG

Body: 

VBV2L03A and VBV2L03B New Air Plates and Airlines are installed + All Metal Position indicator installed; Task Complete

Log Number: 4474310Logbook(s): 

• ELOG
• INCLOG

Body: 

Re-routed solenoid for VBV2L25B. Solenoid cables for VBV2L25A and VBV2L25B plugged in and tested fine.
Ready for continued commissioning.

Log Number: 4474308Logbook(s): 

• ELOG
• INCLOG

Body: 

VBV2L03B solenoid cable plugged in and tested fine.
Ready for continued commissioning.

Log Number: 4474305Logbook(s): 

• ELOG

Body: 

HYST AREA Version 7-0 has successfully cycled the following:

MBT1R01H
MQA3R01
MBC3R01H
MQA5R01
MBC5R01H
MQA7R01
MQA9A32
MBC9A32V
MQB1A40
MBT1A40V
MQB1R01
MQA3A32
MQA5A32
MBC5A32V
MQA7A32
MBC7A32V
MBC7A31H
MBC9A31H
MQB1A39

Total Time: 2.083 mins