Aggregator

Log Number: 4490375Logbook(s): 

• ELOG
• RFLOG

Entry Makers: msmithBody: 

Log Number: 4490374Logbook(s): 

• ELOG
• RFLOG

Entry Makers: msmithBody: 

Log Number: 4490373Logbook(s): 

• ELOG
• RFLOG

Entry Makers: deirBody: 

Log Number: 4490372Logbook(s): 

• ELOG
• RFLOG

Entry Makers: deirBody: 

Log Number: 4490371Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Smith
DATE:             04/21/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4490369Logbook(s): 

• ELOG

Entry Makers: ywangBody: 

Set up the injector with 65uA to FC2, HWien = 0.0 deg, A1 = out, A2 = 4mm, laser A at 250 MHz:

Fig. 1: VWien = 0.0 deg, w/ no flip, allsave # 27027
Fig. 2: VWien = 90.0 deg, w/ flip right, allsave # 27024
Fig. 3: VWien = -90.0 deg, w/ flip right, allsave # 27025
Fig. 4: VWien = 90.0 deg, w/ flip left, allsave # 27026

Note: Injector is left with the Wiens off and no flip.

Log Number: 4490368Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl06

Saved: ywang 04-21-26 23:17:47 {A:i B:3 C:2 E:345 A=CW B=BS C=BS D=BS 0R08=0.00 0R08 dump in.

Log Number: 4490367Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl06
Data from: /usr/opdata/burt/allsnap/04-21-26_21:41:32
Restored file: /tmp/04-21-26_23:14:09.snap

Log Number: 4490366Logbook(s): 

• ELOG
• LERFLOG

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

Date : 04-21-26
Time : 23:06:03
Day : Tuesday
Shift : Owl

Crew Chief : Deir
Program Deputy: Ogur
Team : A
Arm : RADCON
Designated SSO: Smith
LERF Operator:
Operators : Smith

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

Log Number: 4490365Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl06
Data from: /usr/opdata/burt/allsnap/04-21-26_21:41:32
Restored file: /tmp/04-21-26_23:10:47.snap

Log Number: 4490364Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl06

Saved: ywang 04-21-26 23:09:07 {A:i B:3 C:2 E:345 A=CW B=BS C=BS D=BS 0R08=0.00 0R08 dump in.

Log Number: 4490363Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: INJ in BP, NL in RA, SL in PP, BSY in CA, Halls in RA.

Log Number: 4490362Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4490361Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl06
Data from: /usr/opdata/burt/allsnap/04-20-26_21:47:50
Restored file: /tmp/04-21-26_22:50:48.snap

Log Number: 4490360Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl06
Data from: /usr/opdata/burt/allsnap/04-20-26_21:47:50
Restored file: /tmp/04-21-26_22:47:51.snap

Log Number: 4490359Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl06

Saved: ywang 04-21-26 22:43:38 {A:i B:3 C:2 E:345 A=CW B=BS C=BS D=BS 0R08=0.00 0R08 dump in.

Log Number: 4490358Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl06
Data from: /usr/opdata/burt/allsnap/04-20-26_21:21:35
Restored file: /tmp/04-21-26_22:25:23.snap

Log Number: 4490357Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl06
Data from: /usr/opdata/burt/allsnap/04-20-26_21:21:35
Restored file: /tmp/04-21-26_22:23:58.snap

Log Number: 4490356Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl06

Saved: ywang 04-21-26 22:22:02 {A:i B:3 C:2 E:345 A=CW B=BS C=BS D=BS 0R08=0.00 0R08 dump in.

Log Number: 4490355Logbook(s): 

• ELOG
• SRFLOG

Body: 

Found software problem that was causing faulty Gradient calculations.
verifying gradients for 4 cavities.
Cavity 2 reached 24 MV/m but the usable gradient is set to 18 MV/m due to warm window heating heavy FE starting at ~16 MV/m
Cavity 1 reached 24 MV/m with one hour run completed at 24 MV/m mild FE starting at ~ 18 MV/m
Cavity 3 reached 20.7 MV/m (quench limited) with heavy FE starting at ~9.8 MV/m