Aggregator

Log Number: 4487879Logbook(s): 

• ELOG

Entry Makers: nserenomichaelmdturnerBody: 

I spent most of the day dealing with data that I took using the SEE BPMs with sample and hold cards that were instrumented using the LabJACK hardware put in place by the I&C folks with software developed by Brian Bevins. In addition to maybe getting a handle on what is going on with the beam I found a few features for Brian to address later.

Log Number: 4487878Logbook(s): 

• HBLOG
• ELOG

Entry Makers: bschaumlBody: 

I noted some irregularity in current going to Hall B as well as an increase in gamma rates on the IDXs in 5S, 6R, and 2C. I did not realize the severity of the scraping in 2C as the IDX plot on the wall did not have these new detectors on it.

Threw the hall dumplets in, crested gangphase in the NL and SL, ran lower pass locks with C, higher pass locks with B, and all was well. Positional stability and halo rates in B are markedly improved, though that may partially be due to some PID gains I have been tweaking (log incoming) for their orbit lock.

Log Number: 4487876Logbook(s): 

• ELOG

Entry Makers: beneschBody: 

Log Number: 4487875Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16733Title:
Beam scraping observed, running tune to dumplettes

Summary:
Beam scraping observed (hall B only), running tune to dumplettesDuration:
7 minutes

Time Down:
15-Apr-2026 1

Log Number: 4487874Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16733Title:
Beam scraping observed, running tune to dumplettes

Summary:
Beam scraping observed (hall B only), running tune to dumplettesDuration:
4 minutes

Time Down:
15-Apr-2026 1

Log Number: 4487873Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Tuesday April 14 through 18:00 Wednesday April 15 AES RF Systems SL LO/MO Rack Power Level Check

2026-04-15 00:04 - Joshua Settle

Levels roughly

Log Number: 4487872Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: BeamLossMonitor
User: bschauml
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
IL

Log Number: 4487871Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: BeamLossMonitor
User: bschauml
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T

Log Number: 4487866Logbook(s): 

• HCLOG
• ELOG

Entry Makers: yoonBody: 

for kinematic settings adjustment

Log Number: 4487859Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Schaumloffel
DATE:             04/15/2026
SHIFT:               Swing

The operator has read the following:

Log Number: 4487854Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Yoon
DATE:             04/15/2026
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4487852Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Thomas
DATE:             04/15/2026
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4487851Logbook(s): 

• ELOG
• RFLOG

Entry Makers: deirBody: 

Looking at PMESmax-PMESmin from the wf scope. All cavs except for 2 show no noise beyond the deadband of the archiver.

Looks like the phase could be moving by as much as a degree. Assuming it's on crest, it wouldn't be that much of an energy shift, about 0.0007 MeV. Probably still worth looking into.

Log Number: 4487850Logbook(s): 

• ELOG
• SRFLOG

Body: 

No major update.

Log Number: 4487848Logbook(s): 

• ELOG
• RFLOG

Entry Makers: deirBody: 

Peak at 0.0022 Hz, roughly 7.5 minutes.

Looks to have started around 10:00 yesterday. I think the dehumidifiers around the site were turned off at this time. I'm assuming it was always there, just drowned out by the dehumidifiers.

Fig 4: That 7.5 minute oscillation has slowly turned into a 30 minute oscillation. Probably related to an AHU.

Log Number: 4487846Logbook(s): 

• ELOG
• RFLOG

Body: 

2L02 Troubleshooting
Fully calibrated Cavities 2 thru 5. Cavity 5 required a change out of the AIB board. Calibrating and troubleshooting will continue tomorrow on the remaining cavities.
Techs: Evonda V. Gunner K. Alex S. Adam S. & Max S.

Log Number: 4487844Logbook(s): 

• HBLOG
• BTLOG
• ELOG

Entry Makers: beneschBody: 

I've no idea of source, but perhaps another clue to what's moving. Blue is sum of upstream halo monitors. Brown is the tagger top halo monitor.

Log Number: 4487837Logbook(s): 

• ELOG
• LERFLOG

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

Date : 04-15-26
Time : 15:13:59
Day : Wednesday
Shift : Swing

Crew Chief : Forman
Program Deputy: Ogur
Team : X
Arm : Schaumloffel
Designated SSO: Yoon
LERF Operator:
Operators : Schaumloffel, Thomas, Yoon

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

Log Number: 4487836Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl05

Saved: eforman 04-15-26 15:19:27 {A:i B:3 C:2 E:345 A=BS B=CW C=CW D=BS 0R08=3.93 No dumps in.

Log Number: 4487826Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Turning on 0L04-7, setting up to check energy at 4D.