Aggregator

Log Number: 4519186Logbook(s): 

• ELOG

Body: 

HYST AREA Version 7-0 has successfully cycled the following:

Area.Linacs.North

Total Time: 3.033 mins

Log Number: 4519185Logbook(s): 

• ELOG

Entry Makers: settleBody: 

Following yesterday's and today's findings, RF went out to the SL MO rack and experimented with different kinds of shielding. Eventually a configuration was found that eliminated the rash of GLDER and PLDER issues.

Log Number: 4519184Logbook(s): 

• ELOG

Body: 

RF summary for the July 2nd (please phase all the cavities we recovered/worked on these 3 days)

1L04-3 recovery
1L04-8 recovery (+5.1MeV)
1L15-2 HV work

Log Number: 4519183Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19.5 was successfully run for the North Linac on 2026-07-02 15:19:23. The application phase took 00:01:56 to complete.

Log Number: 4519182Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17328Title:
EESRF recovering 1L04-3

Summary:
EESRF recovering 1L04-3Duration:
16 minutes

Time Down:
02-Jul-2026 15:00

Time Up:

Log Number: 4519181Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
1L04-4
Username: kerns
Date/Time: 07-02-26_15:15:38
RF Status: Good
Tuner Status: Good
Comment: DRVH=9.000 Drive getting weak at 11.0 Mv/m, GASK at~4v with 0.0 RATN.
Previous OPS DRVH: 11
Special Instructions:

Log Number: 4519180Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L04-8
Username: kerns
Date/Time: 07-02-26_15:11:38
RF Status: Good
Tuner Status: Good
Comment: Cavity 8 recovered from tuner issues after tuner checks and RFCM replacement. ODVH= 10.3
Special Instructions: Leave tuner in manual

Maintenance Tag: Component: Other

Log Number: 4519178Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L04-3
Username: kerns
Date/Time: 07-02-26_15:10:18
RF Status: Good
Tuner Status: Bad
Comment: Dang. Cavity 3 not recovered, no gradient in OLT. Needs RFCM like cav. 8.
Special Instructions:

Maintenance Tag: Component: Other

Log Number: 4519176Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L04-8
Username: kerns
Date/Time: 07-02-26_15:08:46
RF Status: Good
Tuner Status: Bad
Comment: Cavity 8 recovered. Cavity 3 still has problem with no gradient found in OLT. Needs RFCM like 8.
Special Instructions: Leave tuner in manual

Maintenance Tag: Component: Other

Log Number: 4519175Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L04-8
Username: kerns
Date/Time: 07-02-26_15:06:03
RF Status: Good
Tuner Status: Good
Comment: Cavity recovered after tuning problems solved. ODVH=10.3 Mv/m and optimized.
Special Instructions: Leave tuner in manual

Maintenance Tag: Component: Other

Log Number: 4519174Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L04-3
Username: kerns
Date/Time: 07-02-26_15:06:03
RF Status: Good
Tuner Status: Good
Comment: Cavity recovered after tuning problems solved. ODVH=10.3 Mv/m and optimized.
Special Instructions:

Maintenance Tag: Component: Other

Log Number: 4519173Logbook(s): 

• ELOG
• SRFLOG

Body: 

No major update.

Log Number: 4519172Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: NL taken to RA for continued YBBS06 work.

Log Number: 4519171Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4519168Logbook(s): 

• ELOG

Entry Makers: kernsBody: 

Had correct KCCU and a reasonable KMAI at ~.8 ma with no KMAS voltage. Ran for a couple of minutes and the CPS dropped on DC Overload. Locked zone back up and found cavity 2 kly. resistor shattered again and also noted ModAnode extreme heat smell. Cavity 2 ModAnode resistor is white corona painted and looks good but cavity 1 resistor is almost burned in half. We will need to check the modanode resistor before plugging cav2 resistor back in.

Log Number: 4519167Logbook(s): 

• ELOG

Tags: 

• Autolog

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

Log Number: 4519166Logbook(s): 

• DCLOG
• ELOG

Entry Makers: dthomasBody: 

Log Number: 4519165Logbook(s): 

• DCLOG
• ELOG

Entry Makers: dthomas

Log Number: 4519164Logbook(s): 

• ELOG

Body: 

HYST AREA Version 7-0 has successfully cycled the following:

Area.Linacs.South

Total Time: 3.150 mins

Log Number: 4519163Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19.5 was successfully run for the South Linac on 2026-07-02 14:34:41. The application phase took 00:02:04 to complete.