Aggregator

Log Number: 4477097Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been UnGSET 0:
1L21-1
Username: janak
Date/Time: 03-15-26_14:39:00
RF Status: Good
Tuner Status: Good
Comment: UnGSET 0 - stepped on -100k - For checking H. Dispersion using 30 Hz
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4477096Logbook(s): 

• ELOG

Entry Makers: beneschBody: 

Figure 3. 1L21 is a lousy zone, which is why I had it turned off. Unfortunately, the RF vernier is connected only to it. Turning it back on shouldn't disturb the gradient distribution earlier in the linac very much as it will be at 3 MV/m throughout. I can't run lem hypothetical with all the cavities GSET zero.

Log Number: 4477094Logbook(s): 

• SRFLOG
• ELOG
• RFLOG

Entry Makers: beneschBody: 

https://tasklists.jlab.org/atlis/tasks/119700 2026-03-13 15:21 COMMENT by jkt
3)SRF commissioning GGPRB values are more than 20% than LLRF pre commissioning values (Picture attached)

https://logbooks.jlab.org/entry/4477090
lem fudge factor was 1.001 last run after beam-based calibration and is 1.042 now. The only module change among those running is 2L03. 4.1%*345 = 14.1 MeV.

Figure 1: 2L03 purports to be providing 67.8 MeV. 20% of that is 13.6 MeV.

It would appear the LLRF calibrations are correct.

Log Number: 4477093Logbook(s): 

• ELOG

Entry Makers: bjacobBody: 

See attached ELog for reasoning.

Needed to increase fudge a decent amount.

Figure 1 is after first LEM. Figure 2 shows Fudge as found and figure 3 shows final fudge vaule. Figure 4 shows final LEM results. Figure 5 shows Arc 2 after second LEM. Looks good. Cycling quads and continuing with ORFP

Log Number: 4477092Logbook(s): 

• ELOG

Body: 

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

Area.Linacs.South

Total Time: 3.150 mins

Log Number: 4477091Logbook(s): 

• ELOG

Entry Makers: bjacobBody: 

Took setpoint and cycled without issue

Log Number: 4477090Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the South Linac on 2026-03-15 13:40:48. The application phase took 00:00:07 to complete.

Log Number: 4477089Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

FudgeIt 5.0 changed the South Linac fudge factor from 1.037 to 1.042.

Log Number: 4477088Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the South Linac on 2026-03-15 13:31:10. The application phase took 00:00:07 to complete.

Log Number: 4477087Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been GSET 0:
2L13-8
Username: bjacob
Date/Time: 03-15-26_13:29:56
RF Status: Good
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - See ELog 4477067
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4477086Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been GSET 0:
2L13-7
Username: bjacob
Date/Time: 03-15-26_13:29:56
RF Status: Good
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - See ELog 4477067
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4477085Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been GSET 0:
2L13-6
Username: bjacob
Date/Time: 03-15-26_13:29:56
RF Status: Good
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - See ELog 4477067
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4477084Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been GSET 0:
2L13-5
Username: bjacob
Date/Time: 03-15-26_13:29:56
RF Status: Good
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - See ELog 4477067
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4477083Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been GSET 0:
2L13-4
Username: bjacob
Date/Time: 03-15-26_13:29:56
RF Status: Good
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - See ELog 4477067
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4477082Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been GSET 0:
2L13-3
Username: bjacob
Date/Time: 03-15-26_13:29:56
RF Status: Good
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - See ELog 4477067
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4477081Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been GSET 0:
2L13-2
Username: bjacob
Date/Time: 03-15-26_13:29:56
RF Status: Good
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - See ELog 4477067
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4477080Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been GSET 0:
2L13-1
Username: bjacob
Date/Time: 03-15-26_13:29:56
RF Status: Good
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - See ELog 4477067
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4477076Logbook(s): 

• ELOG

Entry Makers: chumphryBody: 

Pre-requisties completed to start the procedure.

Log Number: 4477075Logbook(s): 

• ELOG
• BTLOG

Body: Fopt results from /usr/ntfs/public/optics/diforb/26mar151245
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: 4477074Logbook(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 0.488207 and 0.488207 volts respectively. The max. amplitude setting was 1 millimeters. The files for this run were saved in the directory /cs/opshome/hlapps/optics/diforb/26mar151245. The X and Y stability of the machine during the run was 0.0466062 and 0.0272789 (mm) respectively.