Aggregator

Log Number: 4478906Logbook(s): 

• ELOG

Entry Makers: alexsBody: 

In our attempts to minimize IDX rates, we had a small amount of success in reducing the 5S01 signal by adjusting the vertical launch into 5L. Unsurprisingly, given the low energy, the beam is very sensitive to magnet changes, and responsive to gang phase. We can minimize the rates with only gang phase, but that smears the beam across the 1A SLM to the point that it's almost invisible. Not ideal. Efforts continue.

Log Number: 4478905Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

After inserting dumplets from downstream to upstream, we learned the IIX6S01 activity is actually coming from the 4S region.

Fig. 1, 2 shows elevated IDX6S01 activity.
Fig. 3 shows through steering a reduction of IDX6S01 activity.
Fig. 4 shows 4L-4E orbit after IDX6S01 reduction.

Attempting to correct orbit while maintaining low rates.

After adjusting gangphase, and adding an energy offset, IDX6S01 was greatly reduced with a decent orbit. Figs 5-7.

Log Number: 4478902Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: shriner 03-21-26 16:30:09 {A:i B:5 C:2 E:345 A=Tune B=BS C=BS D=BS 0R08=6.48 4R dump in. dump(s) in. start of swing shift.

Log Number: 4478901Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Shriner
DATE:             03/21/2026
SHIFT:               Swing

The operator has read the following:

• ELOG
• PD Shift Plan
• Radiation Surveys for PSS Segments in Controlled Access
• PSS Log

Log Number: 4478900Logbook(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: 4478899Logbook(s): 

• ELOG

Entry Makers: dthomasBody: 

Log Number: 4478898Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Anthony
DATE:             03/21/2026
SHIFT:               Swing

The operator has read the following:

• ELOG
• PD Shift Plan
• Radiation Surveys for PSS Segments in Controlled Access
• PSS Log

Log Number: 4478896Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

The following box supplies were CYCLED by version 2-16 of the Box Supply Cycling Script:
ARC1A Ramp Rate = 7.400 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 = 4.865 A/s

Log Number: 4478895Logbook(s): 

• BTLOG
• ELOG

Entry Makers: roblinBody: 

We reached the end of the road. Beam is at AR, the envelope is reasonably well matched. The crew is now optimizing orbits in order to zero out any perceived beam loss with the IDX detectors.

After this, we will start running test plans directly pertinent to the upcoming run first, then some needed for the near future.

Log Number: 4478894Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

The following box supplies were CYCLED by version 2-16 of the Box Supply Cycling Script:
ARC3A Ramp Rate = 9.272 A/s

Log Number: 4478891Logbook(s): 

• ELOG
• LERFLOG

Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 03-21-26
Time : 15:33:13
Day : Saturday
Shift : Swing

Crew Chief : Richardson
Program Deputy: Roblin
Team : C
Arm : Anthony
Designated SSO: Shenenberger
LERF Operator:
Operators : Anthony, Shenenberger, Shriner

This stamp certifies that the above Crew Chief has read/reviewed/received the following:

Log Number: 4478890Logbook(s): 

• ELOG

Entry Makers: dthomasBody: 

Optics on call cool little test.

Log Number: 4478889Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Addressing

Log Number: 4478888Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4478887Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl02

Saved: dthomas 03-21-26 15:07:30 {A:i B:5 C:2 E:345 A=Tune B=BS C=BS D=BS 0R08=6.48 A B C dump(s) in.

Log Number: 4478886Logbook(s): 

• ELOG
• BTLOG

Body: Fopt results from /usr/ntfs/public/optics/diforb/26mar211458
Comment: To AR post AE match
HOSTNAME: opsl02
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: 4478885Logbook(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/26mar211458. The X and Y stability of the machine during the run was 0.141128 and 0.0757838 (mm) respectively.

Log Number: 4478884Logbook(s): 

• ELOG

Entry Makers: dthomasBody: 

Log Number: 4478883Logbook(s): 

• ELOG

Body: 

Laser Used:

A Laser

Sigmas:

Peak 1 - x Sigma: 0.1376 Peak 2 - u Sigma: 0.1715 Peak 3 - y Sigma: 0.2901

Log Number: 4478882Logbook(s): 

• ELOG

Body: 

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

Magnets contained in the following file: /tmp/matchingTool.snap_WndX32
MQKAS02
MQAAS03
MQRAS04
MQAAS05
MQKAS06
MQRAS07
MQKAS08
MQKAS08A
MQRAS09
MQKAS10
MQKAS10A

Total Time: 2.933 mins