Aggregator
COMMENT ON Hall A Dump Camera Box Shielding
Cryo Daily Update
ATLis Comments Daily Digest
Gun krypton line charged up to 5 PSIG
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.
COMMENT ON Trim Rack Blower Replacements in E1, E5, and W1 (SAM 2026)
ACG Report
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
COMPLETED 20 Amp Trim System Preventative Maintenance 2026
COMMENT ON 20 Amp Trim System Preventative Maintenance 2026
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
COMMENT ON CHL Control Room Network Infrastructure Relocation
Haimson magnets pre-installed
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.
Follow-up Re: R30-6 retroreflection with mirror puck
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.
COMMENT ON LNS Installation in W202B04
COMMENT ON LNS Installation in W202B04
COMMENT ON Vacuum Activities CEBAF 9/09/2026 through 12/31/26 (SAM26)
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.
COMMENT ON CHL Control Room Network Infrastructure Relocation
Move the following network switch connections to new chl router:
chldcpsw1 - Hall D Cryo plant
chlcmtfsw1
chlctfsw1
chlguardsw1
chlesr2sw1
Next on the list is chllerfsw1, chlers1sw1 and chlsl06sw1. These are the last 3 that need to move.
Cumbia
Latosky
COMMENT ON E3 to E5 Valve Interlock Cable repair/replacement (2026 SAM)
COMMENT ON Plasma processing during the Fall 2026 SAM
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.










