Aggregator
Follow-up Re: Several 2L21 cavities with high GLDER
Log Number: 4534444Logbook(s): Body:
2.5w amp power supply ripple would affect all eight, not just 1,2, and 3. Cavity three is not going unregulated but instead, beam loading and the GLDER naturally goes up with drive and warns below 200 ppm. At the 75ua beam, I don't see GASK railing or CRFP going above 3k and more importantly, no major changes in GMES or phase. The little yellow hollow squares on the cavity mean the the fluctuations are greater the 100 ppm of the measured gradient as averaged over 25 seconds.
CREW CHIEF SIGN IN
Log Number: 4534435Logbook(s): Body:
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 07-30-26
Time : 16:00:44
Day : Thursday
Shift : Swing
Crew Chief : Richardson
Program Deputy: Latosky
Team : C
Arm : Shriner
Designated SSO: Anthony
LERF Operator:
Operators : Anthony, Shriner
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 07-30-26
Time : 16:00:44
Day : Thursday
Shift : Swing
Crew Chief : Richardson
Program Deputy: Latosky
Team : C
Arm : Shriner
Designated SSO: Anthony
LERF Operator:
Operators : Anthony, Shriner
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
MQAAS03 Mismatched - Trim Not Swapped
Vacuum Group Summary 2026-07-30
QuickPic - GP/PL
Downtime Incident CLOSED: Slight Machine Tuning - GP, PL
COMMENT ON PSS Runtime Miscallenous Repairs
FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor
Log Number: 4534424Logbook(s): Tags: Body: System UN-Masking for: BeamLossMonitor
User: mmerz
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
ILM8T
User: mmerz
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
ILM8T
Downtime Incident CREATED: Slight Machine Tuning - GP, PL
dogCalc V0-14 download
FSD Masking Tool: Successful System Masking for: BeamLossMonitor
Log Number: 4534419Logbook(s): Tags: Body: System Masking for: BeamLossMonitor
User: mmerz
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<
User: mmerz
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<
QuickPic - Hall D: 200nA -> JD80-213 0/90
iCalibrate: Hall D
Crew Chief Shift Log, 2026-07-30 DAY
Log Number: 4534403Logbook(s): Tags: Body:
CEBAF SHIFT LOG
Shift Summary
Start of shift: QE Measurement.
Crew Chief Timesheet Summary: 30 Jul 2026 DAY
Log Number: 4534401Logbook(s): Tags: Body:
Accelerator
PHYSICS
STUDIES
RESTORE
ACC
DOWN
OFF (SAM)
Planned
8
0
0










