Aggregator

Log Number: 4479371Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
Zone 2L23
Username: shriner
Date/Time: 03-23-26_23:35:46
RF Status: Good
Comment: C100 Bypassed - 2026 Low Energy Run
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4479363Logbook(s): 

• ELOG
• LERFLOG

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

Date : 03-23-26
Time : 23:26:04
Day : Monday
Shift : Owl

Crew Chief : Deir
Program Deputy: Roblin
Team : A
Arm : Samari
Designated SSO: Smith
LERF Operator:
Operators : Samari, Smith

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

Log Number: 4479361Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Injector work in progress.  Hall C R/S Box issue fixed.

Log Number: 4479362Logbook(s): 

• DCLOG
• ELOG

Entry Makers: shrinerBody: 

At 2218 BSY2C dropped on "Waterflow fail."

Log Number: 4479360Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

Body:  Accelerator PHYSICS STUDIES RESTORE ACC DOWN OFF (SAM) Planned 0 0 8

Log Number: 4479359Logbook(s): 

• ELOG

Body: 

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

Area.Arcs.Arc1.Spreader
Area.Arcs.Arc1.Arc
Area.Arcs.Arc1.Recombiner
Area.Arcs.Arc1.Extraction
Area.Arcs.Arc2.Spreader
Area.Arcs.Arc2.Arc
Area.Arcs.Arc2.Recombiner
Area.Arcs.Arc2.Extraction
Area.Arcs.Arc3.Spreader
Area.Arcs.Arc3.Arc
Area.Arcs.Arc3.Recombiner
Area.Arcs.Arc3.Extraction
Area.Arcs.Arc4.Spreader
Area.Arcs.Arc4.Arc
Area.Arcs.Arc4.Recombiner
Area.Arcs.Arc4.Extraction
Area.Arcs.Arc5.Spreader
Area.Arcs.Arc5.Arc

Log Number: 4479358Logbook(s): 

• DCLOG
• ELOG

Entry Makers: shrinerBody: 

When the trim card for MQB1A02 (channel 18) was swapped, many magnets within the rack mismatched (Figure 1). After the swap, the magnet was still having issues, so the card was swapped a second time (Figure 2). Although there were significantly fewer, some magnets mismatched again. Both times all magnets were able to take setpoint and cycle.

Log Number: 4479356Logbook(s): 

• ELOG

Entry Makers: alexsBody: 

Reseating failed to bring it back, so swapped the trim. Back online now.

Log Number: 4479354Logbook(s): 

• ELOG

Body: 
HYST AREA Version 7-0 has FAILED to cycle:

MQB1A02 -- E201B12 -- ea2mag -- Failed to set after 2 cycle attempts


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

MBC7A02V
MQA9A02
MBC9A02V
MBDBT02H
MBDBT02V
MBC5A02V
MQA5A02
MBC3A02V
MQA3A02
MBT1A03V
MQB1A03
MQA7A02
MBDBE02V
MQB1A02
MBC9A01V
MBC9A01H
MQA9A01
MBC7A01V
MBC7A01H
MQA7A01
MBC5A01V
MBC5A01H
MQA5A01
MBC3A01V
MBC3A01H
MQA3A01
MBT1A01V
MBT1A01H

Log Number: 4479353Logbook(s): 

• ELOG

Body: 
HYST AREA Version 7-0 has FAILED to cycle:

MQB1A02 -- E201B12 -- ea2mag -- Failed to set after 2 cycle attempts

MBDAA01V -- W102B12 -- wa1mag -- Failed to set after 2 cycle attempts


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

Area.Arcs.Arc1.Spreader
Area.Arcs.Arc1.Arc
Area.Arcs.Arc1.Recombiner
Area.Arcs.Arc1.Extraction
Area.Arcs.Arc2.Spreader
Area.Arcs.Arc2.Arc
Area.Arcs.Arc2.Recombiner
Area.Arcs.Arc2.Extraction
Area.Arcs.Arc3.Spreader
Area.Arcs.Arc3.Arc

Log Number: 4479352Logbook(s): 

• MOLLER
• ELOG

Tags: 

• Moller
• PD

Entry Makers: jonesgaskelldwineskashydougberdnikciprianBody: 

Hall A techs have set all but one of the cable tray support for the MOLLER power supplies. Hall techs continued assembly of needed work platforms.

Log Number: 4479351Logbook(s): 

• ELOG

Body: 

23rd March work:
- Hall B PRAD Target alignment
- IHA2C24A 2B alignment and beamline checks

24th Marck work map:
- Hall C upstream beamline check
- IHA3C07B 2B alignment and downstream beamline check

Log Number: 4479349Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

The following box supplies were TURNED ON AND CYCLED ONCE by version 2-16 of the Box Supply Cycling Script:
ARC1A Ramp Rate = 7.893 A/s
ARC2A Ramp Rate = 7.131 A/s
ARC3A Ramp Rate = 9.272 A/s
ARC4A Ramp Rate = 10.118 A/s
ARC5A Ramp Rate = 9.280 A/s
ARC6A Ramp Rate = 9.299 A/s
ARC7A Ramp Rate = 9.277 A/s
ARC8A Ramp Rate = 11.432 A/s
ARC9A Ramp Rate = 8.810 A/s
ARCAA Ramp Rate = 11.712 A/s
RSEP8A Ramp Rate = 10.544 A/s
RSEP9A Ramp Rate = 9.166 A/s
XSEP2T Ramp Rate = 5.876 A/s
XSEP4T Ramp Rate = 5.186 A/s
XSEP6T Ramp Rate = 9.209 A/s
XSEP8T Ramp Rate = 16.057 A/s
XSEPAT Ramp Rate

Log Number: 4479348Logbook(s): 

• ELOG

Entry Makers: alexsBody: 

Decadrad HV off, all cavities recovered

Log Number: 4479347Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
Zone 2L23
Username: shriner
Date/Time: 03-23-26_21:07:22
RF Status: Good
Comment: C100 Unbypassed - fe onset measurement
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4479346Logbook(s): 

• ELOG

Entry Makers: alexsBody: 

Took setpoint and cycled. Did not swap trim

Log Number: 4479345Logbook(s): 

• ELOG

Body: 

2L22 FE Onset: https://logbooks.jlab.org/entry/4479344

Log Number: 4479344Logbook(s): 

• ELOG

Entry Makers: shrinerBody: 

FE Onset measurements for 2L22 cavities 1-8

Log Number: 4479343Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl06
Data from: /usr/opdata/burt/allsnap/03-23-26_07:43:59
Restored file: /tmp/03-23-26_20:47:13.snap

Log Number: 4479342Logbook(s): 

• ELOG

Entry Makers: ywangBody: 

Tried to optimize the injector and get high current. Got 90uA to FC2 but the transmission is low. The work is not done yet. Backed out the changes so that Ops can tune the main machine. Will continue the work when time is available.
Fig. 1--- 90uA to CF2 but the transmission is very low.