Thu Dec 25 10:10:03 2025 INFO: Fill completed in 10min 0secs

Wed Dec 24 10:12:26 2025 INFO: Fill completed in 12min 22secs

Tue Dec 23 10:07:28 2025 INFO: Fill completed in 7min 24secs

Mon Dec 22 10:05:09 2025 INFO: Fill completed in 5min 5secs

Sun Dec 21 10:08:07 2025 INFO: Fill completed in 8min 3secs

Sat Dec 20 10:07:39 2025 INFO: Fill completed in 7min 36secs

Fri Dec 19 10:10:35 2025 INFO: Fill completed in 10min 31secs

This morning Fil disconnected the table, I removed the bellows and added viewport covers and lexan, and then Randy and I moved the table out of the cleanroom and to the side in the +X direction from it's original location. The bellows I placed in the HAM3 cleanroom on top of the rack, covered in foil. 

Fil also noticed that the ISCT1 bellows were still open, though hanging down. I took the extra precaution and covered these with foil as well to prevent dust drifting onto the table.

Dust counts during the whole process were 0's or 10's when I looked. This seemed too low so I rubbed my glove above the dust monitor during a sample and counts shot up to the hundreds. I guess that space really is that clean, great!

Thu Dec 18 10:10:58 2025 INFO: Fill completed in 10min 55secs

Wed Dec 17 10:11:51 2025 INFO: Fill completed in 11min 47secs

(Jordan, Travis, Gerardo)

The relay tube connecting HAM5 and HAM7 was removed.  We had a few snags while removing it, for some reason the space between bellows is tight, perhaps due to the difference between pressure states, one chamber is under vacuum the other is not.

After the tube was out, the viewport was installed on a short assembly, the viewport and the entire assembly was leak checked and no leaks were found.  He background a the leak detector remained at 1.0x10^-10 torr*l/sec during the leak testing.

System is currently being pumped down via a small turbo plus an aux cart.

Mon Dec 15 10:07:40 2025 INFO: Fill completed in 7min 37secs

(Jordan, Travis, Randy, Jim, Tyler, Gerardo)

Volume for HAM1 was vented this morning, no issues encountered during the process.  HAM1 ion pump was isolated before the vent.

Annulus system for both HAM1 and HAM2 was vented with nitrogen gas, both ion pumps were turned off before the annulus system was vented.

Bolts were removed for both doors, we left 4 bolts on each door and then broke for lunch.

After lunch both doors were removed, -Y door had a stubborn O-ring, but we managed to place it back into its dove tail groove, good O-ring.  Similar issue for the +Y door, inner O-ring was stuck to the door and it just did not want to stay put, we used the O-ring protectors to persueade it to stay in the groove.

Jim locked the table, then with his help the septum viewport protectors were installed.

Jim and Mitch have the chamber now.

Mon Dec 15 10:07:40 2025 INFO: Fill completed in 7min 37secs

Sun Dec 14 10:06:15 2025 INFO: Fill completed in 6min 11secs

Sat Dec 13 10:01:33 2025 INFO: Fill completed in 1min 32secs

Quick fill, has been burping LN2 over past day.

Per WP 12926

GV-7 & GV-5 hard closed at 14:16 PST and 14:34 PST respectively. Metal valve to gate annulus opened as well.

PT-114 and PT-134 pirani interlocks tripped while I was nearby opening the annulus valves. I have re-renabled them from the control room.

FC-V3 (BSC3) and FC-V4 closed as well to isolate the FCT.

Plot of PT-120B (BSC2), PT-124B (CP-1) and PT-144B (CP-2) during valve closure attached.

Fri Dec 12 10:08:13 2025 INFO: Fill completed in 8min 10secs