Aggregator

QE Measurement

1 day ago
Log Number: 4471769Logbook(s): Body: Spot Location: (13250,19250), Charge: 1.998958

Laser Wavelength Atten Setting Laser Power Current HV PS Current QE PV Updated? Update Time/Reason Not Updated (nm) (W) (uA) </
kprice

Tuned, adjusted attenuator for 1L14-5

1 day ago
Log Number: 4471765Logbook(s): Entry Makers: kpriceBody: 

GASK was high enough to cause SOSing. Tried open-loop tuning but ultimately had to open up the attenuator considerably (9.3 -> 2) to get GASK into a reasonable range. This cavity is really touchy when it comes to tuner movement - no change for a long time, then huge swings with very few steps.

kprice

OLT 1L06-4

1 day 3 hours ago
Log Number: 4471762Logbook(s): Entry Makers: dchriBody: 

Cavity had trouble coming up. OLT and letting it rest at 11.5 MV/m (drive high 12 MV/m)

dchri

OLT 1L06-5

1 day 3 hours ago
Log Number: 4471761Logbook(s): Entry Makers: dchriBody: 

Spikes in VIP1L0640 while bringing up cavity 5

Initially, Forward power was way too high. open loop tune, walked cavity up...

Going to let it sit at 7.5 MV/m

Anything above that causes a Vac fault

dchri

Operator SIGN IN

1 day 6 hours ago
Log Number: 4471760Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Christian
DATE:             02/17/2026
SHIFT:               Owl

The operator has read the following:
  • ELOG
  • PD Shift Plan
  • Radiation Surveys for PSS Segments in Controlled Access
  • PSS Log
dchri

COMMENT ON Startup of Two Additional Central Chilled Water System Chillers and Associated Primary and Secondary Pumps and Final Commissioning

1 day 6 hours ago
Log Number: 4471758Logbook(s): Body: 

Subcontractor is tentatively scheduled to loaded revised Central Chiller System software on Thursday 2-19-26 which will require Building 60 chillers, primary pumps, secondary pumps, cooling tower pumps, and cooling tower fans to be switched to manual operation. The existing remote differential pressure sensor located at Test Lab TLA Air Handling Unit 58-AHU-2 will need to be replaced and revised control software loaded. Loading the revised control software will require a brief shutdown of 58-AHU-2 which conditions the TLA R&D Chem Room.

jonesc

CREW CHIEF SIGN IN

1 day 7 hours ago
Log Number: 4471757Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 02-17-26
Time : 23:15:06
Day : Tuesday
Shift : Owl

Crew Chief : Price
Program Deputy: Buttles
Team : D
Designated SSO: Christian
LERF Operator:
Operators : Christian

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

2L14-6 No CRFP Readback

1 day 8 hours ago
Log Number: 4471755Logbook(s): Entry Makers: bschaumlBody: 

Ramping the GLOD during an OLT did not produce any forward power but did produce gradient. Tuning proceeded normally apart from that, being careful about GLOD settings to tune the cavity to the typical peak GMES for a C25.

bschauml

Low Energy Optics Set Up

1 day 8 hours ago
Log Number: 4471751Logbook(s): Entry Makers: samariBody: 

Reverting the 0L match back to design fixed things greatly, then matching at IHA0L03 with the setup_345 workspace made for much improved optics at IHA0R05, a further 0L10 match made it very good. We are still getting ILM1L04B trips at anything > 40 uA given this setup, so more troubleshooting in orbit is required. Transmission is >90 across all 4 beams, and I believe this set up should be good for injector SME quality assurance.
Fig one, A/C orbit, Fig 2 A transmission, Fig 3 B wrt C, Fig 3 D wrt D.

samari

No HV in 1L22 Bay 1

1 day 9 hours ago
Log Number: 4471750Logbook(s): Entry Makers: bschaumlBody: 

We had the full 14 kV last night but this bay didn't come back up with the rest of them. There's also the weirdness of bay 2, but that's been like that for a while and the cavities seem to be doing just fine. Rama took a look at it and confirmed that I should open a PR.

bschauml

HarpFitter: IHA0R05

1 day 10 hours ago
Log Number: 4471737Logbook(s): Body: 

Comments:

Post Match, design is .23 x .59

Laser Used:

A Laser

Sigmas:

Peak 1 - x Sigma: 0.5817 Peak 2 - u Sigma: 0.3814 Peak 3 - y Sigma: 0.4257
samari

Shift Information

Shift Owl
CEBAF Program
MCC Crew Chief Price
MCC Operators Christian
Program Deputy Buttles
Announcements

Access Status

Recent PSS History

recent pss history graph