Aggregator

Log Number: 4487674Logbook(s): 

• ELOG
• BTLOG

Body: 

Laser Used:

C Laser

Sigmas:

Peak 1 - x Sigma: 0.1093 Peak 2 - u Sigma: 0.1896 Peak 3 - y Sigma: 0.2848

Log Number: 4487667Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: BeamLossMonitor
User: kprice
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: 4487666Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Destination Masking to: HallB,HallC
User: kprice

Log Number: 4487665Logbook(s): 

• ELOG

Body: HALLB=>IOCS=>iocipm2h01a has been enabled in alarm handler

IOC recovered by Software

Log Number: 4487664Logbook(s): 

• ELOG

Entry Makers: kpriceBody: 

Looks pretty promising!

Log Number: 4487660Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-04-15 01:43:58 The output from the myRestore execution was as follows: iocipm2h01a <NOTE> bpmdr: Provided macro *IOC* is never used bpmdr bpmdr_ALPHA@2026-04-15 01:43 2(2) restored bpmdr_CALCONS@2026-04-15 01:43 17(17) restored bpmdr_CALFACS1@2026-04-15 01:43 6(6) restored bpmdr_CALFACS2@2026-04-15 01:43 12(12) restored bpmdr_DISBPM@2026-04-15 01:43 1(1) restored bpmdr_GOF2BPM@2026-04-15 01:43 12(12) restored bpmdr_GOFBPM@2026-04-15 01:43 5(5) rest

Log Number: 4487659Logbook(s): 

• ELOG

Entry Makers: kpriceBody: 

Applied quad settings as suggested in elog 4487642. Finished up at 4D spectrometer, now going back to straight ahead.

Log Number: 4487655Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: BeamLossMonitor
User: kprice
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: 4487654Logbook(s): 

• ELOG
• LERFLOG

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

Date : 04-15-26
Time : 07:33:33
Day : Wednesday
Shift : Day

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

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

Log Number: 4487653Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16729Title:
0L03 HV not restoring

Summary:
Cavity 4's KMAI spikes when trying to bring the zone into HV, even with the cavity bypassed, keep preventing the zone going into HV.

Log Number: 4487652Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: South Linac RF down while RF on call worked on swapping the LO amp.&nbs

Log Number: 4487649Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4487646Logbook(s): 

• ELOG

Entry Makers: victorcBody: 

Log Number: 4487642Logbook(s): 

• ELOG

Tags: 

• Readme

Entry Makers: beneschBody: 

with 0L03-4 off, MQS0L04 should be reduced to 15.74 if you don't run lemi.

Based on my experience, the odds that you'll have to rematch the injector to North Linac after removing the early RF focusing are at least even.

Log Number: 4487638Logbook(s): 

• ELOG

Entry Makers: kpriceBody: 

Once we get 0L03 back, we'll need to phase 0L04-7 before attempting to recover beam into the main machine. Injector on-call recommended setting up to the 4D as the most straightforward way to phase this cavity.

Log Number: 4487637Logbook(s): 

• ELOG
• RFLOG

Entry Makers: dchriBody: 

Zone tripped HV while UnBypassing 0L04-7. However, was able to get 0L04-7 on and have it currently sitting at 5MV/m (GDR) with HV restored

As for 0L03, seems like even after bypassing 0L03-4 the zone is still not going into HV. So perhaps efforts to bring up 0L04-7 were in vain?

Letting 0L04 sit with cav 7 on for now. However, will likely Bypass it if 0L03 HV and cav 4 comes back

Log Number: 4487636Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Destination Masking to: Injector
User: kprice

Log Number: 4487635Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16729Title:
0L03 HV not restoring

Summary:
Cavity 4's KMAI spikes, even bypassed, keep tripping the zone out of HV.

Log Number: 4487634Logbook(s): 

• ELOG
• RFLOG
• SRFLOG

Body: 

Cavity will have to be bypassed. Conditions have changed for #4 Klystron. KMAV has increased and the tube is still not responding to changes in Mod Anode settings.

Log Number: 4487630Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
0L04-7
Username: dchri
Date/Time: 04-15-26_06:10:05
RF Status: Good
Tuner Status: Good
Comment: C100 Unbypassed - to make up for loss of 0L03-4
Special Instructions:

Maintenance Tag: Component: Other