Aggregator

Log Number: 4363848Logbook(s): 

• ELOG

Body: 

HYST AREA Version 6-4-1 has successfully cycled the following:

Area.Arcs.Arc1.Spreader
Area.Arcs.Arc1.Arc
Area.Arcs.Arc1.Recombiner
Area.Arcs.Arc1.Extraction
Area.Arcs.Arc2.Spreader
Area.Arcs.Arc2.Arc
Area.Arcs.Arc2.Recombiner
Area.Arcs.Arc2.Extraction
Area.Arcs.Arc3.Spreader
Area.Arcs.Arc3.Arc
Area.Arcs.Arc3.Recombiner
Area.Arcs.Arc3.Extraction
Area.Arcs.Arc4.Spreader
Area.Arcs.Arc4.Arc
Area.Arcs.Arc4.Recombiner
Area.Arcs.Arc4.Extraction
Area.Arcs.Arc5.Spreader
Area.Arcs.Arc5.Arc

Log Number: 4363847Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

The following box supplies were CYCLED by version 2-16 of the Box Supply Cycling Script:
ARC1A Ramp Rate = 8.126 A/s
ARC2A Ramp Rate = 6.939 A/s
ARC3A Ramp Rate = 9.912 A/s
ARC4A Ramp Rate = 10.993 A/s
ARC5A Ramp Rate = 10.196 A/s
ARC6A Ramp Rate = 9.385 A/s
ARC7A Ramp Rate = 10.228 A/s
ARC8A Ramp Rate = 11.966 A/s
ARC9A Ramp Rate = 9.540 A/s
ARCAA Ramp Rate = 12.593 A/s
MYA2T01 Ramp Rate N/A
MYA4T01 Ramp Rate N/A
MYA6T01 Ramp Rate N/A
MYA8T01 Ramp Rate N/A
MYAAT01 Ramp Rate N/A
RSEP8A Ramp Rate = 10.612 A/s
RSEP9A Ramp Rate = 9.498 A/s
XSEP2T Ramp Rate = 5.809 A/s
XSEP4

Log Number: 4363846Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 2.6 Target restore date was The output from the myRestore execution was as follows: Auto timestamp unavailable [iocitfrfcry]

Log Number: 4363845Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been bypassed:
2L12-4
Username: geesaman
Date/Time: 04-23-25_16:33:38
RF Status: Bad
Tuner Status: Good
Comment: Bypassed - stepped off +100k - High cathode current preventing HV state, tube needs high-potted.
Special Instructions:

Maintenance Tag: Component: Tube

Log Number: 4363843Logbook(s): 

• ELOG

Body: 

1L11 work: RFCM replaced for QCHL causing latched FSD IN CAVITY 4 , RF restored, cav. 8 cables checked but still needs 2.5w amp replaced. Running at 9.0 Mv/m but has PMES/CRFP instability. BLVF/CWVF IO Buffer card replaced for cav1 and cav2 CWVF replaced and determined 2.1E-08 vacuum real and SRF vacuum OPSPR submitted. Cav. 5 also had to be lowered and ODVH set from over 9Mv/m to 6 Mv/m to run with 6 without tripping on CWVF.

Log Number: 4363842Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl03
Data from: /usr/opdata/burt/allsnap/04-23-25_08:12:16
Restored file: /tmp/04-23-25_16:31:02.snap


restore after maintenance day

Log Number: 4363841Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl03

Saved: yoon 04-23-25 16:30:49 {A:3 B:5 C:5 E:1060 A=BS B=BS C=BS D=BS 0R08=0.00 0R08 dump in. A B C dump(s) in. Autosave prior to restore.

Log Number: 4363838Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl07

Saved: bruker 04-23-25 16:24:48 {A:3 B:5 C:5 E:1060 A=BS B=BS C=BS D=BS 0R08=0.00 0R08 dump in. A B C dump(s) in.

Log Number: 4363837Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

Drury granted permission for AESIC to raise vacuum setpoint of VIP1L1120 to 1x10-5. ATLis approved by Crew Chief. Work in progress now.

Log Number: 4363836Logbook(s): 

• UITFLOG
• ELOG
• SRFLOG

Body: 

All UITF vacuum tasks complete for hooking up Nb3Sn 1/4 cryomodule.

Log Number: 4363834Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Chaudhary
DATE:             04/23/2025
SHIFT:               Swing

The operator has read the following:

Log Number: 4363832Logbook(s): 

• POLOG
• ELOG

Entry Makers: brukershukuiBody: 

To increase SNR (+ immunity to unexplained false DC offset) of TMG measurements, we increased the laser power for automated nightly measurements to 9 mW. We are not worried about getting close to the damage threshold of the photodiode, but applying much more than 10 mW shows signs of saturation.

Log Number: 4363830Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Yoon
DATE:             04/23/2025
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4363827Logbook(s): 

• ELOG

Body: 

Looks good. Great time to do it is asap. Crew Chief Approved.

Log Number: 4363825Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
1L11-2
Username: kerns
Date/Time: 04-23-25_16:07:53
RF Status: Good
Tuner Status: Good
Comment: DRVH=5.000 CWVF on cav.1/2 when recovering above 5 Mv/m. SRF Vacuum OPSPR.
Previous OPS DRVH: 7.5
Special Instructions:

Log Number: 4363824Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
1L11-5
Username: kerns
Date/Time: 04-23-25_16:06:14
RF Status: Good
Tuner Status: Good
Comment: DRVH=6.000 CWVF on 5/6 when I tried recovering above 6 Mv/m.
Previous OPS DRVH: 11.4
Special Instructions:

Log Number: 4363821Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Destination Masking to: Inj500KeV
User: lrichard

The following PVs failed to write:
ISD3H003DEF
ISD3H003L
ISD3H004DEF
ISD3H004L

Log Number: 4363816Logbook(s): 

• ELOG
• LERFLOG

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

Date : 04-23-25
Time : 15:41:11
Day : Wednesday
Shift : Swing

Crew Chief : Richardson
Program Deputy: Nguyen
Team : X
Arm : Yoon
Designated SSO: Chaudhary
LERF Operator:
Operators : Chaudhary, Yoon

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

Log Number: 4363810Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Winding down for MD

Log Number: 4363807Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

Body:  Accelerator PHYSICS STUDIES RESTORE ACC DOWN OFF (SAM) Planned 1 0 0