Aggregator

Log Number: 4506115Logbook(s): 

• HDLOG
• ELOG

Entry Makers: dchriBody: 

Came in to xD current excursions ranging from ~22 to ~60 nA while trying to send 35nA
At this time, attenuator was between ~125 to ~117
And xD slit was at ~25

Noticed that xD current had been much more stable when xD slit was set to 32 (earlier in the day)

Setting xD slit from ~25 to ~30 reduced xD current excursions from +/-38 to +/-15

We will continue to monitor and at some point likely try to set xD slit back to 32 to see if excursions can be reduced more

Log Number: 4506102Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Christian
DATE:             05/29/2026
SHIFT:               Swing

The operator has read the following:

Log Number: 4506101Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Schaumloffel
DATE:             05/29/2026
SHIFT:               Swing

The operator has read the following:

Log Number: 4506100Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Yoon
DATE:             05/29/2026
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4506098Logbook(s): 

• ELOG

Entry Makers: beneschBody: 

Figure 1 - upper panel has all three halls. Hall D current very noisy.
Figure 2 - upper panel has just Hall C.
Figure 3 - loss with C at 60 uA was lower around 5/26

Log Number: 4506092Logbook(s): 

• ELOG
• SRFLOG

Body: 

No major update.

Log Number: 4506090Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

Figs 1, 3 Show quantitatively using MBC4R10V to decrease IIX5S01 rates.
Fig. 2 Show IIX5S01 rates decreased from 2759 to less than 10.

Log Number: 4506088Logbook(s): 

• ELOG
• LERFLOG

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

Date : 05-29-26
Time : 15:38:31
Day : Friday
Shift : Swing

Crew Chief : Richardson
Program Deputy: Saitiniyazi
Team : X
Arm : Schaumloffel
Designated SSO: Yoon
LERF Operator:
Operators : Christian, Schaumloffel, Yoon

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

Log Number: 4506087Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl05

Saved: lrichard 05-29-26 15:37:05 {A:i B:5 C:3 E:345 A=BS B=CW C=CW D=CW 0R08=61.62 No dumps in.

Log Number: 4506081Logbook(s): 

• ELOG

Entry Makers: beneschBody: 

See top window of Figure 1. Integration time will have to be reduced from one second to get an accurate reading, top center of Figure 2. I don't know how to do that; the capacitor can be changed to 10 pF from this screen.

Log Number: 4506080Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: xC/D CW, looking at bleedthrough on xB viewers

Log Number: 4506079Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4506078Logbook(s): 

• ELOG

Entry Makers: chumphryBody: 

Log Number: 4506075Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Log Number: 4506071Logbook(s): 

• ELOG

Entry Makers: chumphryBody: 

Log Number: 4506067Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: chumphry 05-29-26 14:57:56 {A:i B:5 C:3 E:345 A=BS B=CW C=CW D=CW 0R08=60.93 No dumps in.

Log Number: 4506065Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: janak 05-29-26 14:57:18 {A:i B:5 C:3 E:345 A=BS B=CW C=CW D=CW 0R08=62.34 No dumps in.

Log Number: 4506062Logbook(s): 

• ELOG

Entry Makers: chumphryBody: 

Log Number: 4506060Logbook(s): 

• ELOG

Entry Makers: chumphryBody: 

Log Number: 4506059Logbook(s): 

• ELOG

Entry Makers: janakBody: 

The hall has approved the current beam profile and is starting the process of ramping up current and adjusting the target. Currently taking 200nA on Empty Cell