Aggregator

Log Number: 4488504Logbook(s): 

• ELOG

Tags: 

• MCC8am

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: CW to HB and HC

Log Number: 4488501Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Mock
DATE:             04/17/2026
SHIFT:               Day

The operator has read the following:

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

Log Number: 4488500Logbook(s): 

• ELOG
• RFLOG

Entry Makers: deirBody: 

Figs 1&2: PMESMax-PMESMin for each cavity in 2L05. Most of them appear normal, except for cavities 2 and 7.

Figs 3&4: Same thing, but for 1L05. Most are normal except for cavities 2 and 3.

Log Number: 4488499Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Janak
DATE:             04/17/2026
SHIFT:               Day

The operator has read the following:

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

Log Number: 4488498Logbook(s): 

• HBLOG
• ELOG

Tags: 

• ShiftSummary

Entry Makers: kagnanvoBody: 

08:00 - Start of day shift

09:40 - No beam (see 4488532)

10:00 - Beam back ==> Eugene start beam tuning

11:52 - Snake scan for calibration

12:50 - Controlled access to fix some cables (reconnect master cables)

14:45 - For the last 2 hours, Eugene & Ashot have been investigating issues with backgrounds.

15:55 - background issue still under investigation => until the end of shift

Log Number: 4488497Logbook(s): 

• ELOG

Entry Makers: bjacobBody: 

Log Number: 4488484Logbook(s): 

• ELOG

Body: 

Electricians will begin troubleshooting this morning.

Log Number: 4488482Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: bjacob 04-17-26 07:20:04 {A:i B:3 C:2 E:345 A=BS B=CW C=CW D=BS 0R08=6.03 No dumps in. Start of Day Shift.

Log Number: 4488481Logbook(s): 

• ELOG
• LERFLOG

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

Date : 04-17-26
Time : 07:16:35
Day : Friday
Shift : Day

Crew Chief : Blackshaw
Program Deputy: Ogur
Team : E
Arm : Janak
Designated SSO: Mock
LERF Operator:
Operators : Mock, Janak

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

Log Number: 4488479Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: CW to both Halls.

Log Number: 4488478Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4488477Logbook(s): 

• ELOG

Entry Makers: victorc

Log Number: 4488476Logbook(s): 

• ELOG
• RFLOG

Entry Makers: deirBody: 

Has been happening for a while and it's affecting 2L07 and 2L08, maybe more...

Have not tracked down a source yet.

Log Number: 4488475Logbook(s): 

• ELOG

Entry Makers: victorcBody: 

Made some adjustments to MBC3C07H to flatten the 3C16 horizontal BPM.

Log Number: 4488473Logbook(s): 

• BTLOG
• ELOG

Entry Makers: deirBody: 

The harp velocities in the main machine were changed to 1.5 mm/s on 4/15 around 2:15pm.

The 1E01 swipe taken that morning looks good. The 1E01 swipes we took tonight look pretty bad. We might need to decrease this harp speed, the non-1E01 swipes looked okay.

Log Number: 4488469Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: BeamLossMonitor
User: deir
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T0

Log Number: 4488468Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16748Title:
Harp scans + FOPT

Summary:
Routine Mon, Wed, Fri *n01 harp swipes, plus an FOPT to furthest used dumplette.Duration:
13 minutes

Time Down:
17-Apr-2026 06:19

Log Number: 4488467Logbook(s): 

• ELOG
• BTLOG

Body: 

Laser Used:

C Laser

Sigmas:

Peak 1 - x Sigma: 0.2371 Peak 2 - u Sigma: 0.2382 Peak 3 - y Sigma: 0.3943

Log Number: 4488466Logbook(s): 

• ELOG
• BTLOG

Body: Fopt results from /usr/ntfs/public/optics/diforb/26apr170627
Comment:
HOSTNAME: opsl03
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: 4488465Logbook(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/26apr170627. The X and Y stability of the machine during the run was 0.0732815 and 0.0429586 (mm) respectively.