Aggregator

Log Number: 4491498Logbook(s): 

• HCLOG
• ELOG

Entry Makers: yoonBody: 

Log Number: 4491497Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Schaumloffel
DATE:             04/25/2026
SHIFT:               Swing

The operator has read the following:

Log Number: 4491496Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Yoon
DATE:             04/25/2026
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4491494Logbook(s): 

• HBLOG
• BTLOG
• ELOG

Entry Makers: eformanBody: 

MQR2C17 was found to be set 200% off design. It has been placed back on design (twiddle save done in the unlikely chance we want to go back to the previous value).

Log Number: 4491493Logbook(s): 

• HCLOG
• ELOG

Entry Makers: beneschBody: 

Looking at the individual wires, the growth in X in 3H07B may be an artifact of beam motion. Harp wires move 1.5 mm/s. First three images are the X, Y, X wires of 3H07A. The first X wire is labeled U because at high energy synchrotron radiation affects it and I got tired of asking shift crews to look only at the third wire. Second set of three images are the XYX wires of 3H07B. Same intentional mislabeling.

I suggest the N-delta collaboration evaluate the beam as is before any further attempt is made to adjust X divergence.

Log Number: 4491492Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

IHA2C04 looks good after adjusting the MQA2C02 maching quad. After operator turnover, we are going to steer the beam up to the Hall B tagger dump for Owl shift to finish the optics to the target.

We will then turn our attention to Hall C restoration.

Log Number: 4491491Logbook(s): 

• ELOG

Entry Makers: roblinBody: 

beam is now matched reasonably well at 2C04 in front of Hall B. Tagger energized. We are going up and making sure its fine before starting Hall C CW delivery . A small focusing adjustment will be made in Hall C prior to CW. This evening, owl shift, the crew will setup Hall B while delivering to C.

Log Number: 4491489Logbook(s): 

• HBLOG
• ELOG

Entry Makers: bjacobBody: 

Alarm node enabled. Hall B FSD node is masked at the moment. We'll just want to make sure the tagger node is unmasked when we reset masking for running beam to the hall.

Log Number: 4491487Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Following advice from log # 4487475 we adjusted the position on the Lambertson.

Adjusted MQK6T08 and MQA2C01 to tighten the beam on the 2C04 Harp, design for that magnet is 28176.301.

Did a rough steer to zero on 2C04 dump

Log Number: 4491486Logbook(s): 

• HCLOG
• ELOG

Entry Makers: beneschBody: 

Diverging in X. 3C20 and 3C21 quads much above design as no matching was done at start of line. We'll see what we can do. Minimum is likely at the YAG viewer betwee the two harps since that's what we used to adjust.

Log Number: 4491485Logbook(s): 

• ELOG
• HBLOG
• BTLOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.0836 Peak 2 - u Sigma: 0.1288 Peak 3 - y Sigma: 0.1646

Log Number: 4491484Logbook(s): 

• ELOG

Body: HALLB=>BOXES=>TAGGERB has been enabled in alarm handler

Tagger Ramped and Cycled

Log Number: 4491482Logbook(s): 

• ELOG
• HBLOG

Body: 

Comments:

MQK6T08 28576.3, 400 G above design. At 200 G above design, 0.422 by 0.131

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.4286 Peak 2 - u Sigma: 0.4370 Peak 3 - y Sigma: 0.1108

Log Number: 4491479Logbook(s): 

• ELOG
• BTLOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.7187 Peak 2 - u Sigma: 0.6052 Peak 3 - y Sigma: 0.0902

Log Number: 4491478Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl05

Saved: eforman 04-25-26 15:21:35 {A:i B:3 C:2 E:345 A=BS B=Tune C=BS D=BS 0R08=6.00 6R dump in. A B C dump(s) in.

Log Number: 4491477Logbook(s): 

• ELOG
• LERFLOG

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

Date : 04-25-26
Time : 15:19:44
Day : Saturday
Shift : Swing

Crew Chief : Forman
Program Deputy: Sereno
Team : F
Arm : Yoon
Designated SSO: Schaumloffel
LERF Operator:
Operators : Schaumloffel, Yoon

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

Log Number: 4491476Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Recovery spill over

Log Number: 4491475Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4491473Logbook(s): 

• ELOG

Entry Makers: roblinBody: 

We rematched 5E using standard qsUtility. This improved both 5 and 6. We then adjusted 5R using the 6S01 viewer to produce a good incoming condition into 6E. The latest scan shows we are pretty close to what we want in 6E, likely good enough to extract to Hall B.

Log Number: 4491472Logbook(s): 

• BTLOG
• ELOG

Body: 

Comments:

After adjusting MQA5R04 and MQK5R06

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.1953 Peak 2 - u Sigma: 0.1365 Peak 3 - y Sigma: 0.2692