Aggregator

Log Number: 4492816Logbook(s): 

• ELOG

Entry Makers: kpriceBody: 

Adjusted B laser phase +2 degrees to pull that weird tail in. Could likely dial it in a little more but we're in the right neighborhood.

Log Number: 4492814Logbook(s): 

• ELOG

Entry Makers: jhowardBody: 

Working on addressing the tail

Log Number: 4492813Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Price
DATE:             04/30/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4492812Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Chaudhary
DATE:             04/30/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4492811Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Christian
DATE:             04/30/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4492810Logbook(s): 

• ELOG
• BTLOG

Body: 

Laser Used:

B Laser

Sigmas:

Peak 1 - x Sigma: 0.2493 Peak 2 - u Sigma: 0.2593 Peak 3 - y Sigma: 0.2404

Log Number: 4492809Logbook(s): 

• ELOG

Body: 

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

Area.Linacs.South

Total Time: 3.150 mins

Log Number: 4492808Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the South Linac on 2026-04-30 00:05:08. The application phase took 00:00:07 to complete.

Log Number: 4492807Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

FudgeIt 5.0 changed the South Linac fudge factor from 1.028 to 1.026.

Log Number: 4492806Logbook(s): 

• ELOG

Body: 

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

Area.Linacs.South

Total Time: 3.167 mins

Log Number: 4492805Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16815Title:
West Arc LCW Leak

Summary:
We were informed of a leak in the LCW that supplies the west arc systems.

Log Number: 4492804Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the South Linac on 2026-04-29 23:58:16. The application phase took 00:01:19 to complete.

Log Number: 4492803Logbook(s): 

• ELOG

Body: 

Camera ID: [ id = MCCA1, pv = null, name = MCC AXIS 1-1, connection = mjpg, url = http://opsvid3:80/axis-cgi/mjpg/video.cgi?date=0&clock=0&camera=3, xptOut = ITVXPTop12_sel ]

Log Number: 4492802Logbook(s): 

• ELOG

Body: 

Laser Used:

C Laser

Sigmas:

Peak 1 - x Sigma: 0.1327 Peak 2 - u Sigma: 0.2195 Peak 3 - y Sigma: 0.4272

Log Number: 4492801Logbook(s): 

• ELOG

Entry Makers: dthomasBody: 

Log Number: 4492800Logbook(s): 

• ELOG

Body: 

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

Area.Linacs.North

Total Time: 1.233 mins

Log Number: 4492799Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the North Linac on 2026-04-29 23:37:01. The application phase took 00:00:11 to complete.

Log Number: 4492798Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: jhoward 04-29-26 23:36:06 {A:i B:5 C:2 E:345 A=BS B=BS C=BS D=BS 0R08=0.00 0R08 dump in. dump(s) in.

Log Number: 4492797Logbook(s): 

• ELOG
• LERFLOG

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

Date : 04-29-26
Time : 23:32:56
Day : Wednesday
Shift : Owl

Crew Chief : Howard
Program Deputy: Sereno
Team : D
Arm : Chaudhary
Designated SSO: Christian
LERF Operator:
Operators : Price, Chaudhary, Christian

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

Log Number: 4492796Logbook(s): 

• ELOG

Entry Makers: bschaumlBody: 

Steered beam from the gun to the ILD without much trouble. Fig. 1 is the initial orbit and 2 the final orbit, both with C beam. Fig. 3 is B beam and 4 is D beam. Fig. 5-8 show the chopper viewer as found, with D beam on the B slit, and D beam moved to the A slit by way of the laser phase the SME recommended a few nights ago. As shown in Fig. 9-11, collinearity with D beam was unfortunate after this change, so I walked the laser phase back a few degrees until it was... more passable. Harp scan at 0L10 was very close to the prior one, so I think we might be okay in the injector.