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Gun krypton line charged up to 5 PSIG

2 days 20 hours ago
Log Number: 4549261Logbook(s): Entry Makers: mamunBody: 

In preparation for gun high voltage conditioning with Krypton, the line has been charged up to 5 PSIG.

Pre-conditions:
- The Kr line had been baked during the main gun chamber bake out, and thus under vacuum and checked leak free.
- The Kr line leak valve closed. Gun RAV to Kr leak valve in open state.

mamun

ACG Report

2 days 20 hours ago
Log Number: 4549258Logbook(s): Tags: Body: 

CHL Network Upgrade:
Move the following network switch connections to new chl router: chldcpsw1 - Hall D Cryo plant chlcmtfsw1 chlctfsw1 chlguardsw1 chlesr2sw1
Moved fiber connections for chllerfsw1 and chlesr1sw1 to new router. Cumbia LatoskyNext on the list is chllerfsw1, chlers1sw1 and chlsl06sw1. Cumbia Latosky

Progress on incorporating the SRF vacuum in the OTF screen generators

higgins

COMMENT ON 20 Amp Trim System Preventative Maintenance 2026

2 days 21 hours ago
Log Number: 4549256Logbook(s): Body: 

Power supply inspections completed for BS04B21, BS04B22, and BS04B23. Magnet inspections completed for all 5 BSY racks.

This completes this task. The checklist has been performed on all racks, power supplies, and magnets of the 20 Amp Trim System.

A summary of findings will be logged in the coming days. A new ATLis and PTW will be generated to correct some findings requiring power supply swaps or local power supply repairs that are outside the scope of this PM task.

Chaudhary, Yoon, Janak, Delk

delk

Haimson magnets pre-installed

2 days 22 hours ago
Log Number: 4549254Logbook(s): Entry Makers: brukerBody: 

I took the four Haimson correctors from the cabinet and mounted them at their intended positions on the beam line. Neither the zip ties nor the alignment fixtures have been tightened all the way to allow for final alignment after wires are hooked up.

bruker

Follow-up Re: R30-6 retroreflection with mirror puck

2 days 22 hours ago
Log Number: 4549253Logbook(s): Body: 

This is very good news, very close to where it should be - NICE JOB.

Later, a) when we have a photocathode w/ QE and b) when we have the steering lens as-is or in new spot and find the natural X/Y center, then we can evaluate the alignment to the 5mm active area of the GaAs sample. At that point, we'll ask S&A for an as-found or if a minor adjustment should be made.

Let's close/override the gun valve and move forward with HCO to begin HV conditioning on Monday.

grames

COMMENT ON LNS Installation in W202B04

2 days 22 hours ago
Log Number: 4549252Logbook(s): Body: 

Wiring was reorganized in the back of the rack. SCE supplies were shifted up to make space for 3U shelves. 3U shelves were installed.
Work started for moving the magnet connections from trim racks to new location.

- Peirce, Banks

peirce

COMMENT ON Vacuum Activities CEBAF 9/09/2026 through 12/31/26 (SAM26)

2 days 22 hours ago
Log Number: 4549250Logbook(s): Body: 

1L09. Cavity 5 waveguide vacuum VIP1L095. Leak checked and reactivated questionable 1e-7 pressure. No leaks were detected. We sprayed everything including helium down the open waveguide assembly allowing us to verify that ceramic window was okay. Hopefully complete final insulating vacuum leak check in the morning.
1L10. Closed up and reestablished insulting vacuum in preparation for leak check.

fhumphry

COMMENT ON Plasma processing during the Fall 2026 SAM

2 days 23 hours ago
Log Number: 4549246Logbook(s): Body: 

1L07-completed processing.
At the end of the shift. We secured the RF and turned off the amplifiers. Closed the valve connected to VIP1L08A ion pump and checked for leaks. Turned off pump on the gas cart and backed fill up to gas manifold. Cryomodule is pumping by plasma turbo cart overnight. The pressure was in the 1e-5 Torr range and dropping when we left.

iresha

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