Aggregator

Log Number: 4479109Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the South Linac on 2026-03-22 18:53:12. The application phase took 00:00:14 to complete.

Log Number: 4479108Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

FudgeIt 5.0 changed the South Linac fudge factor from 1.056 to 1.057.

Log Number: 4479107Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

FudgeIt 5.0 changed the South Linac fudge factor from 1.057 to 1.056.

Log Number: 4479106Logbook(s): 

• ELOG

Entry Makers: anthonyBody: 

2L09-1 started SOSing and tossing SL energy all over the place as the gradient kept changing. Attempted to lower gradient and recover gradient, a ususal, practice, but did not work. OLT cavity for the second time this shift. During the iteration the tuning of the cavity was more normal during the ramp back to gradient.

Log Number: 4479105Logbook(s): 

• ELOG

Entry Makers: alexsBody: 

Shunt lost current regulation and the usual first intervention of bumping the current slider failed to fix it. Ramping it all the way to 0 then walking it back up to its setpoint got it going again.

Log Number: 4479104Logbook(s): 

• BTLOG
• ELOG

Body: 

From CED we get, for the design Twiss upstream of MQK7S10:
betax = 5.864930961993220e+01
alphax = 2.435873394501931e+00
betay = 3.445606685786559e+00
alphay = -2.157716223261397e-01

Log Number: 4479103Logbook(s): 

• ELOG
• BTLOG

Body: IHA7E01 X-plane Emittance Measurement Analysis - BSList 119761
qsUtility Data Analyzer V7-34
SDDS FILE: /cs/prohome/apps/q/qsUtility/7-34/fileio/data/IHA7E01/IHA7E01_x_zigzag_2026-03-22_18:08:57/IHA7E01_zigzag_2026-03-22_18:08:57_qsUtility_analyzer.sdds
HOSTNAME: opsl02 CED WORKSPACE: OPS CED LOGIN KEY: pro

Log Number: 4479102Logbook(s): 

• ELOG
• BTLOG

Body: Emittance Measurement: IHA7E01 X-plane - BSList 119761
qsUtility zigzag_dataColletor V7-34
HOSTNAME: opsl02 CED WORKSPACE: OPS CED LOGIN KEY: pro

Log Number: 4479101Logbook(s): 

• BTLOG
• ELOG
• RFLOG

Entry Makers: alexsBody: 

While the ArcSteer test plan was running beam to 1R, noticed the 1A SLM appeared really good compared to what it looked like running to AR for orbit checks after GSET0'ing 1L19-5. Once the test plan was finished, went pass by pass to check, and sure enough, the beam is getting progressively more smeared out with each pass. Obviously we aren't seeing fifth pass beam leaking into arc 1, so perhaps we're seeing some RF cavities struggling with beam loading?

Log Number: 4479100Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: shriner 03-22-26 18:06:54 {A:i B:5 C:2 E:345 A=BS B=BS C=BS D=BS 0R08=0.00 7R dump in. dump(s) in.

Log Number: 4479099Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Saturday March 21 through 18:00 Sunday March 22 Accel Ops Dept Mgt Gradient Calibration 2026

2026-03-22 09:03 - Jay Benesch

https://logbooks.jla

Log Number: 4479098Logbook(s): 

• BTLOG
• ELOG

Body: 

Summary log entry here:
https://logbooks.jlab.org/entry/4479097

I'd like to look at the results more closely offline and perhaps retry this test at a later date.

Log Number: 4479097Logbook(s): 

• BTLOG
• ELOG

Entry Makers: dturnerBody: 

Ops was concerned that the ArcSteer tool was leaving large kicks at the end of the arcs that needed to be steered out. I was asked to include correctors and BPMs further downstream to help alleviate the problem.

The normal templates that we've been using use the BPMs and correctors in the arc and recombiner up to the dumplette.

Log Number: 4479096Logbook(s): 

• ELOG

Body: 

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

MBT1A01H
MBT1A01V
MBT1A03V
MBT1A04H
MBT1A05V
MBT1A06H
MBT1A07V
MBT1A08H
MBT1A09V
MBT1A11H
MBT1A13V
MBT1A14H
MBT1A15V
MBT1A16H
MBT1A17V
MBT1A18H
MBT1A19V
MBT1A21H
MBT1A23V
MBT1A24H
MBT1A25V
MBT1A26H
MBT1A27V
MBT1A28H
MBT1A30V
MBT1A31H
MBT1A33V
MBT1A34H
MBT1A35V
MBT1A36H
MBT1A37V
MBT1A38H
MBT1A40V

Total Time: 0.917 mins

Log Number: 4479095Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl06
Data from: /usr/opdata/burt/allsnap/03-22-26_16:53:35
Restored file: /tmp/03-22-26_17:45:14.snap

Log Number: 4479094Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl06

Saved: dturner 03-22-26 17:45:01 {A:i B:5 C:2 E:345 A=BS B=BS C=BS D=BS 0R08=0.00 2R dump in. A B C dump(s) in. Autosave prior to restore.

Log Number: 4479093Logbook(s): 

• ELOG

Body: 

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

MBT1A01H
MBT1A01V
MBT1A03V
MBT1A04H
MBT1A05V
MBT1A06H
MBT1A07V
MBT1A08H
MBT1A09V
MBT1A11H
MBT1A13V
MBT1A14H
MBT1A15V
MBT1A16H
MBT1A17V
MBT1A18H
MBT1A19V
MBT1A21H
MBT1A23V
MBT1A24H
MBT1A25V
MBT1A26H
MBT1A27V
MBT1A28H
MBT1A30V
MBT1A31H
MBT1A33V
MBT1A34H
MBT1A35V
MBT1A36H
MBT1A37V
MBT1A38H
MBT1A40V

Total Time: 0.917 mins

Log Number: 4479092Logbook(s): 

• ELOG

Body: 

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

MBT1R01H
MBT1R02V
MBT1R03H
MBT1R04V
MBT1R06H
MBT1R07V
MBT1R09H
MBT1R10H
MBT1R10V

Total Time: 0.533 mins

Log Number: 4479091Logbook(s): 

• ELOG
• BTLOG

Body: ARC1 Y-plane ArcSteer Results - BSList 107394 back to the normal template

hostname: opsl06

Disabled BPMs:
None

Disabled Correctors:
None

BPM average period: 5 s
BDL rail limit: 0.9
USE_RAD_DIST: 0

Log Number: 4479090Logbook(s): 

• ELOG
• BTLOG

Body: ARC1 X-plane ArcSteer Results - BSList 107394 back to the normal template

hostname: opsl06

Disabled BPMs:
None

Disabled Correctors:
None

BPM average period: 5 s
BDL rail limit: 0.9
USE_RAD_DIST: 0