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Reports until 15:47, Thursday 30 April 2026
H1 TCS
thomas.shaffer@LIGO.ORG - posted 15:47, Thursday 30 April 2026 (90078)
TCSX table water lines all swapped and tested, but left off over the weekend

Camilla C, Madi S., TJ S

We finsihed swapping out all of the flex lines on the TCSX table, and have tested the lines at full flow. We will leave the chiller off over the weekend.

We left off last week (alog89976) with the 1/2"OD lines that were spec'd on the BOM not fitting in the Kentek beam dump. I looked it up and the push fittings on the beam dump actually take 10mm OD lines. Ordered those, and we finally were able to install them today. We first plugged in the table lines to the rest of the systme lines but with the chiller off, to get a bit of water on the table, and immediately noticed a leak at one of the beam dump fittings. We tried cutting and reseating the line, but it still had a drip. We replaced the dump with a spare and that seemed to do the trick.

In an effort to put water back in all of the table lines in a lower pressure manner, we hooked one end of the table lines to a wet vac and dipped one in a bucket of lab water. This pulled enough water through the lines and then we capped both lines and let it sit over lunch. There were no drips or evidence of drips when we returned, so we connected the table lines back into the system lines. Madi and I were on the phone while I turned the chiller on with the back 3way valve turned to recirculate (down). I then very slowly moved it up and Madi observed water starting to flow through the system. We kept slowly increasing the flow and watching for leaks until we were at our full 4.0gpm as read from the chiller. 

We decided to keep the chiller off over the weekend, but will turn it back on Monday and will keep a close eye on it since I'm a bit paranoid.

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