Aggregator

Log Number: 4490823Logbook(s): 

• DEGRADERLOG
• ELOG

Entry Makers: bschaumlBody: 

We set the aspect ratio on target ladder viewer per SME's calculations and found some perplexing shifts in the X and Y sigmas of our harp scans at various solenoid currents. We attempted a few different aspect ratios in hopes of getting a round beam throughout our various solenoid setpoints but were unable to sort out exactly what was going on. Further analysis is necessary.

Log Number: 4490822Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl01

Saved: bschauml 04-24-26 02:29:03 {A:i B:3 C:2 E:345 A=Pulse B=BS C=BS D=BS 0R08=0.00 0R08 dump in.

Log Number: 4490821Logbook(s): 

• DEGRADERLOG
• ELOG

Entry Makers: bschaumlBody: 

Dialed in the correct aspect ratios on ITV0L02A to give approximately 600 by 600 um beam.

Log Number: 4490820Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl01

Saved: bschauml 04-24-26 01:15:31 {A:i B:3 C:2 E:345 A=BS B=BS C=BS D=BS 0R08=0.00 0R08 dump in.

Log Number: 4490819Logbook(s): 

• DEGRADERLOG
• ELOG

Entry Makers: bschaumlBody: 

Degrader flow is unmasked, aperture and target ladder motion are masked, and CW is inhibited.

Log Number: 4490818Logbook(s): 

• DEGRADERLOG
• ELOG

Entry Makers: bschaumlBody: 

Ran 10 uA tune beam to FC2 and ramped the 0L02 BCM trip threshold down until we obtained an FSD trip. Seems like 701 is a good value and it tripped pretty consistently at 9.9ish in FC2. We likely won't be anywhere near the limit.

Log Number: 4490817Logbook(s): 

• SRFLOG
• CLOG
• ELOG

Entry Makers: dchriBody: 

Liquid Levels in 2L25 getting low due to JT valve being locked at ~60%
Heaters are ramping down, Levels will recover. Expect minor Alarms such as Liquid Levels to go in and out of alarm until Flow Measurements are complete

Log Number: 4490816Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Smith
DATE:             04/24/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4490796Logbook(s): 

• ELOG
• BTLOG

Body: IHA0L03 X-plane Emittance Measurement Analysis - Degrader BSList 118869
qsUtility Data Analyzer V7-34
SDDS FILE: /a/opsdata/fiefdata/fileio/q/qsUtility/data/D1-0/IHA0L03/IHA0L03_x_zigzag_2026-04-23_23:31:35/IHA0L03_zigzag_2026-04-23_23:31:35_qsUtility_analyzer.sdds
HOSTNAME: opsl01 CED WORKSPACE: OPS CED LOGIN KEY: pro

Log Number: 4490795Logbook(s): 

• ELOG
• BTLOG

Body: Emittance Measurement: IHA0L03 X-plane - ABORTED - Degrader BSList 118869
qsUtility zigzag_dataColletor V7-34
HOSTNAME: opsl01 CED WORKSPACE: OPS CED LOGIN KEY: pro

Log Number: 4490794Logbook(s): 

• SRFLOG
• CLOG
• ELOG

Entry Makers: dchriBody: 

Q0 Measurements via Flow Meter on Zone 2L25
https://tasklists.jlab.org/atlis/tasks/120026

Ramping down Cryo Heaters to ~30W or so
JT Valve will be manipulated for measurements
Cryo stability is being watched

Log Number: 4490793Logbook(s): 

• ELOG
• BTLOG

Body: IHA0L03 Y-plane Emittance Measurement Analysis - Degrader BSList 118869
qsUtility Data Analyzer V7-34
SDDS FILE: /a/opsdata/fiefdata/fileio/q/qsUtility/data/D1-0/IHA0L03/IHA0L03_y_zigzag_2026-04-23_23:18:02/IHA0L03_zigzag_2026-04-23_23:18:02_qsUtility_analyzer.sdds
HOSTNAME: opsl01 CED WORKSPACE: OPS CED LOGIN KEY: pro

Log Number: 4490792Logbook(s): 

• ELOG
• BTLOG

Body: Emittance Measurement: IHA0L03 Y-plane - Degrader BSList 118869
qsUtility zigzag_dataColletor V7-34
HOSTNAME: opsl01 CED WORKSPACE: OPS CED LOGIN KEY: pro

Log Number: 4490791Logbook(s): 

• ELOG
• LERFLOG

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

Date : 04-23-26
Time : 23:22:57
Day : Thursday
Shift : Owl

Crew Chief : Price
Program Deputy: Sereno
Team : D
Designated SSO: Smith
LERF Operator:
Operators : Smith

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

Log Number: 4490790Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Injector setup to 1D in progress.

Log Number: 4490789Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4490788Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: BeamLossMonitor
User: samari
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
ILM8T09

Log Number: 4490787Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: BeamLossMonitor
User: samari
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
ILM8

Log Number: 4490786Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: BeamLossMonitor
User: samari
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
ILM8T09

Log Number: 4490785Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: BeamLossMonitor
User: samari
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
ILM8