Aggregator

Log Number: 4484785Logbook(s): 

• BTLOG
• ELOG

Entry Makers: alexsBody: 

Figure 1: FOPT that prompted the decision
Figure 2: Vertical dispersion quad starting values
Figure 3: Arc 4 30 Hz spikes before correction (1.3 V 30 Hz drive)
Figure 4: After correction
Figure 5: Changes

Log Number: 4484784Logbook(s): 

• ELOG
• BTLOG

Body: Fopt results from /usr/ntfs/public/optics/diforb/26apr071802
Comment: after cycling world
HOSTNAME: subopsl18
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: 4484783Logbook(s): 

• ELOG

Body: 

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

MQA4S01
MQA4S02
MQK4S03
MQA4S04
MQA4S05
MQA4S06
MQA4S07
MQA4S08
MQA4S09
MQA4S10
MQB4E01
MQL4E02
MQL4E03

Total Time: 2.733 mins

Log Number: 4484782Logbook(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 0.488208 and 0.488208 volts respectively. The max. amplitude setting was 1 millimeters. The files for this run were saved in the directory /cs/opshome/hlapps/optics/diforb/26apr071802. The X and Y stability of the machine during the run was 0.0903105 and 0.0743434 (mm) respectively.

Log Number: 4484781Logbook(s): 

• ELOG

Body: 

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

Area.Arcs.Arc2.Spreader
Area.Arcs.Arc2.Arc
Area.Arcs.Arc2.Recombiner
Area.Arcs.Arc2.Extraction
Area.Arcs.Arc4.Spreader
Area.Arcs.Arc4.Arc
Area.Arcs.Arc4.Recombiner
Area.Arcs.Arc4.Extraction
Area.Arcs.Arc6.Spreader
Area.Arcs.Arc6.Arc
Area.Arcs.Arc6.Recombiner
Area.Arcs.Arc6.Extraction
Area.Arcs.Arc8.Spreader
Area.Arcs.Arc8.Arc
Area.Arcs.Arc8.Recombiner
Area.Arcs.Arc8.Extraction
Area.Arcs.ArcA.Spreader
Area.Arcs.ArcA.Arc

Log Number: 4484780Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Monday April 06 through 18:00 Tuesday April 07 AES DC power Systems Replace Shunt Module MXV4T04

2026-04-07 09:04 - Kevin Banks

Shunt module repl

Log Number: 4484779Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

MXC7S06 mismatched. Restored it, cycled the East Stack. Had orbit troubles when trying to use the 3S06 quad for the y-plane data. SME made a configuration change to use 3S04 which appears to be behaving better (not blowing up the beam). Detoured to take an FOpt which showed match is good through 4A with vertical dispersion correction needed in 4A, even before completing 3E match. Aborting 3E match and skipping to 4A dispersion correction. Before that, we will cycle the West Stack and take another FOpt just to be sure all things are cycled and FOpt is telling us the truth.

Log Number: 4484777Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from subopsl18

Saved: benesch 04-07-26 17:55:16 {A:i B:5 C:2 E:345 A=BS B=BS C=BS D=BS 0R08=0.00 A B C dump(s) in.

Log Number: 4484778Logbook(s): 

• BTLOG
• ELOG

Entry Makers: dturnerBody: 

The 3E match is getting nowhere. We decided to take a step back and look at another fopt:
https://logbooks.jlab.org/entry/4484774

There was a mismatched 7S shunt that forced us to cycle the east arc. Compared to the earlier fopt, https://logbooks.jlab.org/entry/4484700, we see the optics have improved. It appears that cycling did Good Things.

The optics look decent enough up to 4A where vertical dispersion is big. The betatron match looks decent enough up to 5A.

Going forward, we will also cycle the west arc, take another fopt, then fix vertical dispersion in 4A and match at 5E.

Log Number: 4484776Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

The following box supplies were CYCLED by version 2-16 of the Box Supply Cycling Script:
ARC2A Ramp Rate = 7.131 A/s
ARC4A Ramp Rate = 10.118 A/s
ARC6A Ramp Rate = 9.299 A/s
ARC8A Ramp Rate = 11.432 A/s
ARCAA Ramp Rate = 11.712 A/s
RSEP8A Ramp Rate = 10.544 A/s

Log Number: 4484775Logbook(s): 

• ELOG

Entry Makers: anthonyBody: 

Log Number: 4484774Logbook(s): 

• ELOG
• BTLOG

Body: Fopt results from /usr/ntfs/public/optics/diforb/26apr071733
Comment: 3E match in progress
HOSTNAME: opsl04
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: 4484772Logbook(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 0.488208 and 0.488208 volts respectively. The max. amplitude setting was 1 millimeters. The files for this run were saved in the directory /cs/opshome/hlapps/optics/diforb/26apr071733. The X and Y stability of the machine during the run was 0.087382 and 0.0920223 (mm) respectively.

Log Number: 4484769Logbook(s): 

• ELOG
• BTLOG

Body: Emittance Measurement: IHA3E01 Y-plane
qsUtility zigzag_dataColletor V7-34
HOSTNAME: opsl04 CED WORKSPACE: OPS CED LOGIN KEY: pro

Log Number: 4484768Logbook(s): 

• BTLOG
• ELOG

Entry Makers: dturnerBody: 

3E vertical emittance measurement still in progress. There was a delay due to operator turnover, then a shunt mismatch. The vertical measurement was proving difficult with the previously selected quad MQA3S06, so we're trying with MQA3S04 to see if we get better results. If we can't get the match at 3E, we'll go back and rematch 2E per Jay's suggestion.

Log Number: 4484766Logbook(s): 

• ELOG

Entry Makers: alexsBody: 

After the mismatch, cycled the arc7 box supply, then all east arc supplies, then all east arc trims. Beam wasn't making it to the 3R dumplette after returning beam, so steered relative orbits back to zero. What this cycling did to downstream orbits remains to be seen. We'll find out once the 3E match is complete.

Log Number: 4484765Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16666Title:
MXC7S06 shunt mismatch

Summary:
MXC7S06 shunt mismatched and all East Arc box supplies and trims needed to be cycled.

Log Number: 4484764Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16666Title:
MXC7S06 shunt mismatch

Summary:
MXC7S06 shunt mismatched and all East Arc box supplies and trims needed to be cycled.

Log Number: 4484762Logbook(s): 

• ELOG

Body: 

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

Area.Arcs.Arc1.Spreader
Area.Arcs.Arc1.Arc
Area.Arcs.Arc1.Recombiner
Area.Arcs.Arc1.Extraction
Area.Arcs.Arc3.Spreader
Area.Arcs.Arc3.Arc
Area.Arcs.Arc3.Recombiner
Area.Arcs.Arc3.Extraction
Area.Arcs.Arc5.Spreader
Area.Arcs.Arc5.Arc
Area.Arcs.Arc5.Recombiner
Area.Arcs.Arc5.Extraction
Area.Arcs.Arc7.Spreader
Area.Arcs.Arc7.Arc
Area.Arcs.Arc7.Recombiner
Area.Arcs.Arc7.Extraction
Area.Arcs.Arc9.Spreader
Area.Arcs.Arc9.Arc

Log Number: 4484761Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

The following box supplies were CYCLED by version 2-16 of the Box Supply Cycling Script:
ARC1A Ramp Rate = 7.893 A/s
ARC3A Ramp Rate = 9.272 A/s
ARC5A Ramp Rate = 9.280 A/s
ARC7A Ramp Rate = 9.277 A/s
ARC9A Ramp Rate = 9.300 A/s
RSEP9A Ramp Rate = 9.166 A/s