Aggregator

Log Number: 4486981Logbook(s): 

• BTLOG
• ELOG

Entry Makers: samariBody: 

Fig one before, Fig 2 is after MAT1L16H, Fig 3 is after MHB0L01AV swap.

Stability issues in both seemed to improve.

Log Number: 4486980Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Swapped this trim card to address issue found in linked OPS PR.

Log Number: 4486979Logbook(s): 

• ELOG

Entry Makers: michaelmBody: 

All now +/- 1 degree of detune reporting. Several cavities were 5+ degrees off...

Log Number: 4486978Logbook(s): 

• ELOG

Entry Makers: michaelmBody: 

Per detune report. Energy lock cavity in the injector, but has some Pfwd instability...

Log Number: 4486977Logbook(s): 

• BTLOG
• ELOG

Body: 

16 s oscillations gone after bypassing 1L09-3: https://logbooks.jlab.org/entry/4486976

Log Number: 4486976Logbook(s): 

• ELOG
• RFLOG

Entry Makers: samari

Log Number: 4486975Logbook(s): 

• ELOG

Entry Makers: michaelmBody: 

Low KCCU from klystron... it's as close to tuned as it can be. May require klystron swap soon?

Log Number: 4486974Logbook(s): 

• ELOG

Entry Makers: michaelmBody: 

Open loop tuned - detune angle was 20 degrees off...

Log Number: 4486972Logbook(s): 

• ELOG

Body: 

Good to Go

Log Number: 4486970Logbook(s): 

• ELOG
• RFLOG

Body: 

This cavity has been running since it was recovered on April 7th. There were no visible oscillations until last night around 9. As it is impacting the energy this is most likely somewhere in the probe path. This will take some time to diagnose. We can connect a loop back cable to find out if it's coming from the chassis(receiver channel) as the cavity is already bypassed and this test is noninvasive.

Log Number: 4486968Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16717Title:
SL01B01 Rack Power Drop

Summary:
While Swapping trim card MBC7R06V, Trim Rack SL01B01 lost Rack Power.

Log Number: 4486967Logbook(s): 

• ELOG

Body: 

Good to Go

Log Number: 4486966Logbook(s): 

• ELOG

Body: 

Task approved by work supervisor.

Log Number: 4486964Logbook(s): 

• BTLOG
• ELOG

Body: 

Prior to "Start ORFP to 5th pass based on fopt", place all the spreader recombiner matching quads on design. Use the recombiner ballpark matching instead of using qsUtility in the spreaders (Todd/Dennis).

Log Number: 4486961Logbook(s): 

• ELOG

Body: 

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

Area.Linacs.North

Total Time: 1.217 mins

Log Number: 4486960Logbook(s): 

• DCLOG
• ELOG

Entry Makers: janakBody: 

Did not take setpoint, investigation lead to the rack losing communication as detailed in the attached ELOG. Before the rack went down MBC7R06V seemed to have taken setpoint.

Log Number: 4486959Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the North Linac on 2026-04-13 10:02:56. The application phase took 00:00:10 to complete.

Log Number: 4486958Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

FudgeIt 5.0 changed the North Linac fudge factor from 0.996 to 0.99.

Log Number: 4486957Logbook(s): 

• DCLOG
• ELOG

Entry Makers: janakBody: 

Went to investigate mismatch on MBC7R06V, after reseating the card and closing the door saw that the entire rack was reading No Response, and that the LED lights on the front of the utility chassis were not lit. Contacted DC Power on call and they determined the chassis will need to be replaced.

Log Number: 4486956Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the North Linac on 2026-04-13 10:00:06. The application phase took 00:01:49 to complete.