Aggregator

Log Number: 4472423Logbook(s): 

• ELOG

Body: 

It's the dehumidifier behind Exit Stair 1.

Went out and took a look at NL2 MDP. It also powers the breaker panel inside Exit Stair 1, so I was immediately suspicious. Checked outside the building and, sure enough, there was a dehumidifier. I called the control room and got an estimate for when the oscillations would start again and stood outside by the dehumidifier for that length of time. The dehumidifier turned on and I called the control room back to confirm if the forward power oscillations started again. They had.

Log Number: 4472422Logbook(s): 

• ELOG

Body: 

Looks like whatever is causing it is connected to the NL2 MDP.

Log Number: 4472421Logbook(s): 

• SRFLOG
• CLOG
• ELOG
• RFLOG

Entry Makers: deirBody: 

Reduced LEM REQ Heat to 45 W

Log Number: 4472420Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Smith
DATE:             02/22/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4472419Logbook(s): 

• ELOG

Entry Makers: deirBody: 

Adjusted LEM REQ Heat per a hypothetical LEM

Log Number: 4472418Logbook(s): 

• ELOG
• POLOG

Body: 

Log Number: 4472417Logbook(s): 

• ELOG
• POLOG

Body: 

For the status of the batteries, see:
https://logbooks.jlab.org/entry/4472382

Log Number: 4472416Logbook(s): 

• ELOG
• LERFLOG

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

Date : 02-21-26
Time : 23:14:48
Day : Saturday
Shift : Owl

Crew Chief : Deir
Program Deputy: Buttles
Team : A
Arm : RADCON
Designated SSO: Smith
LERF Operator:
Operators : Surles-Law, Thomas

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

Log Number: 4472415Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

As requested by AESDC.

Log Number: 4472414Logbook(s): 

• ELOG

Entry Makers: lrichardBody: 

Just noting

Log Number: 4472413Logbook(s): 

• ELOG

Entry Makers: victorcBody: 

Dropped Inj, NL, SL, BSY to PP. Cycled keys and segments restored to BP just fine.

Log Number: 4472412Logbook(s): 

• ELOG
• SRFLOG

Body: 

Only cavities 2, 4, 5 and 7 have power available.
Ran cavity 2 tuner at 4 MV/m
Verified +/- 100 kHz range and completed a +/- 2kHz loop

Moved on to cavity 4 - verified +/- 100 kHz range. On the low side of 1497 MHz, began having trouble keeping the cavity locked on the pi mode. Frequency kept jumping between the pi mode and the 6/7 pi mode. Decided not to do the 4kHz loop for that reason.

Log Number: 4472411Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Friday February 20 through 18:00 Saturday February 21 AES DC power Systems SAM 2025 Box Power Supply HCO

2026-02-20 19:02 - Max Roy

ARC1, ARC3, A

Log Number: 4472410Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632
Data from: /usr/opdata/burt/allsnap/02-20-26_08:52:30
Restored file: /tmp/02-21-26_17:56:16.snap


downloading run 4, VW 90 flip left

Log Number: 4472409Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: samari 02-21-26 17:56:01 {A:5 B:3 C:1 E:345 A=BS B=BS C=BS D=BS 0R08=0.00 0R08 dump in. Autosave prior to restore.

Log Number: 4472408Logbook(s): 

• ELOG
• RFLOG

Entry Makers: victorcBody: 

RF group requested RF off for 2L06 for 2L03 work.

Log Number: 4472407Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632
Data from: /usr/opdata/burt/allsnap/02-10-26_16:55:14
Restored file: /tmp/02-21-26_17:40:36.snap

Log Number: 4472406Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: samari 02-21-26 17:40:22 {A:5 B:3 C:1 E:345 A=BS B=BS C=BS D=BS 0R08=0.00 0R08 dump in. Autosave prior to restore.

Log Number: 4472405Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632
Data from: /usr/opdata/burt/allsnap/02-20-26_10:05:08
Restored file: /tmp/02-21-26_17:23:37.snap


downloading run 3, Vw= -90, flip right

Log Number: 4472404Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: samari 02-21-26 17:23:22 {A:5 B:3 C:1 E:345 A=BS B=BS C=BS D=BS 0R08=0.00 0R08 dump in. Autosave prior to restore.