Aggregator

Log Number: 4478969Logbook(s): 

• ELOG
• RFLOG

Entry Makers: victorcBody: 

Second time cavity 8 dropped zone HV in 2L03 the past two days due to a high mod anode current fault. Took a look at some signals and filament voltage for this cavity seems rather noisy and is probably worth taking a look at.

Log Number: 4478968Logbook(s): 

• ELOG

Body: Currently Disabled Alarms - ACC

The Following Alarms Have Been Disabled Within the Last Week
===============================================================
03/18/2026 00:43:51
ACC=>IOCS=>NORTH_LINAC=>iocnl2=>camac=>iocnl2:noXrate (NO XRATE)
jhoward
see elog #4477821
---------------------------
03/16/2026 12:33:45
ACC=>RF=>NORTH_LINAC=>1L26=>1L26-1=>R1Q1ALM07 (BYPASS CONNECTIVITY ERROR)
bjacob
Not in use. Nuisance
---------------------------
03/16/2026 12:33:20
ACC=>RF=>NORTH_LINAC=>1L26=>1L26-1=>R1Q1ALM06 (ITOT CONNECTIVITY ERROR)
bjacob

Log Number: 4478967Logbook(s): 

• ELOG

Body: INJECTOR=>IOCS=>iocsoftslminj has been disabled in alarm handler

Not currently using inj slm. Lost comms: https://logbooks.jlab.org/entry/4478966

Log Number: 4478966Logbook(s): 

• ELOG

Entry Makers: deirBody: 

Tried to reboot via softioc console, but appears not to have worked. Based on the terminal output it looked like the reboot was successful.

Seems it's stuck in a reboot loop. I turned off auto restart with ctrl-T and rebooted to observe the output. I noticed during the iocInit phase, the process is always killed by signal 11, Figure 3, and then it tries to reboot again if auto-restart is on.

Going to disable the node for now. We're not using the injector SLM.

Log Number: 4478965Logbook(s): 

• ELOG
• RFLOG

Entry Makers: msmithBody: 

Zone restored but cavity 3 took a little work to bring back.

Log Number: 4478964Logbook(s): 

• ELOG

Entry Makers: victorcBody: 

https://tasklists.jlab.org/bslist/tasks/119708

Running rfcal in the South Linac. 2A energy offset of 1E-3 set.

Log Number: 4478963Logbook(s): 

• DCLOG
• ELOG

Entry Makers: victorcBody: 

Log Number: 4478962Logbook(s): 

• ELOG

Entry Makers: deirBody: 

Ballpark match was done yesterday for diffx/y out of 9R. It vastly improved the spots at AS02 and AE01, and they were able to do a betatron match.

After the machine resteer today to reduce IIX rates, the AE01 swipe looked little worse for wear, 0.22mm in x and 2.0mm in y. I saw the 9R06 VBeta quad was taken 96% off design during the ballpark match, Fig 1, walked it toward design while looking at AS02 viewer then took another harp swipe. It's now 52% off design, Fig 2.

Relevant harp swipes and viewer walks are linked. Judging by the FOpt, vertical dispersion out of 9R may need to be revisited.

Log Number: 4478961Logbook(s): 

• ELOG
• BTLOG

Body: Fopt results from /usr/ntfs/public/optics/diforb/26mar220021
Comment: After 9R06 VBeta Quad Tweak
HOSTNAME: opsl05
CED WORKSPACE: OPS CED LOGIN KEY: pro
MYA DEPLOYMENT: ops
CONFIG PATH: /cs/prohome/apps/q/QTSnyder_QT5/1-2/fileio/config/cs.conf
DIFORB PATH: /usr/ntfs/public/optics/diforb

Log Number: 4478960Logbook(s): 

• ELOG

Entry Makers: msmithBody: 

Log Number: 4478959Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Fopt 7.9 completed successfully. The runtime settings include a sample count of 15, a minimum current of 4, and an operating regime of Standard with Excitation in 1S Region. The corrector and RF kicks applied were 0.488208 and 0.488208 volts respectively. The max. amplitude setting was 1 millimeters. The files for this run were saved in the directory /cs/opshome/hlapps/optics/diforb/26mar220021. The X and Y stability of the machine during the run was 0.0984631 and 0.0459152 (mm) respectively.

Log Number: 4478958Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Smith
DATE:             03/22/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4478957Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Fopt 7.9 failed with the following diagnostic:
GUI's Log PageFopt Progress Log
00:20:50 Starting Fopt
00:20:50 Fetching current and energies
00:20:50 Extracting BPM information from CED
00:20:50 Number of BPMs detected: 62
00:20:50 Determining status of Halls
00:20:50 Suspending Energy Locks
00:20:50 Suspending Orbit Locks
00:20:50 Programming the function generator
00:20:51 Enabling kick control hardware
00:20:51 Turning off Fast Feedback to A & C
00:20:53 Taking measurements

Log Number: 4478956Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Chaudhary
DATE:             03/22/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4478955Logbook(s): 

• ELOG

Body: 

Laser Used:

A Laser

Sigmas:

Peak 1 - x Sigma: 0.1009 Peak 2 - u Sigma: 0.0795 Peak 3 - y Sigma: 0.1712

Log Number: 4478954Logbook(s): 

• ELOG
• BTLOG

Body: Fopt results from /usr/ntfs/public/optics/diforb/26mar212348
Comment: After IDX reduction steering
HOSTNAME: opsl01
CED WORKSPACE: OPS CED LOGIN KEY: pro
MYA DEPLOYMENT: ops
CONFIG PATH: /cs/prohome/apps/q/QTSnyder_QT5/1-2/fileio/config/cs.conf
DIFORB PATH: /usr/ntfs/public/optics/diforb

Log Number: 4478953Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Fopt 7.9 completed successfully. The runtime settings include a sample count of 15, a minimum current of 4, and an operating regime of Standard with Excitation in 1S Region. The corrector and RF kicks applied were 0.488208 and 0.488208 volts respectively. The max. amplitude setting was 1 millimeters. The files for this run were saved in the directory /cs/opshome/hlapps/optics/diforb/26mar212348. The X and Y stability of the machine during the run was 0.0489169 and 0.102753 (mm) respectively.

Log Number: 4478952Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl05

Saved: deir 03-21-26 23:39:17 {A:i B:5 C:2 E:345 A=BS B=BS C=BS D=BS 0R08=0.00 A B C dump(s) in.

Log Number: 4478951Logbook(s): 

• ELOG

Body: 

Laser Used:

A Laser

Sigmas:

Peak 1 - x Sigma: 0.2297 Peak 2 - u Sigma: 1.3236 Peak 3 - y Sigma: 2.0355

Log Number: 4478950Logbook(s): 

• ELOG
• LERFLOG

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

Date : 03-21-26
Time : 23:26:13
Day : Saturday
Shift : Owl

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

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