2024/11/20 (Wednesday)

Lab in-personnel: Himangshu, Myles

Status	Run 82 In Preparation. Pumped out fridge lines. Pumped out 1k pot and Main Bath. Saw a slight pressure built up in Main Bath. Leak checking shows no leaks. Waited a day to if pressure in main bath goes up.
1200	Main Bath at 1atm. Pumped out 1K pot with needle valve open. Can't go below 4 mbar. Pumped out Main Bath to 8 atm, open 1Kpot with needle valve open, stuck at 8 atm. Situation is clear: Main Bath is leaking air into it, can't see this with Leak detector because IVC is leak-tight. Since 1k pot needle valve will let air into 1K pot from Main bath, that's why we saw that 4mbar reading earlier. If the top o-ring where it connects to Main Frame is leaky, it can be solved with resealing with vacuum grease, trying that today. Open all small, medium and large screws from the Main Bath to get space to apply grease.

Status

Run 82 In Preparation. Pumped out fridge lines. Pumped out 1k pot and Main Bath. Saw a slight pressure built up in Main Bath. Leak checking shows no leaks. Waited a day to if pressure in main bath goes up.

1200

Main Bath at 1atm. Pumped out 1K pot with needle valve open. Can't go below 4 mbar. Pumped out Main Bath to 8 atm, open 1Kpot with needle valve open, stuck at 8 atm. Situation is clear: Main Bath is leaking air into it, can't see this with Leak detector because IVC is leak-tight. Since 1k pot needle valve will let air into 1K pot from Main bath, that's why we saw that 4mbar reading earlier. If the top o-ring where it connects to Main Frame is leaky, it can be solved with resealing with vacuum grease, trying that today. Open all small, medium and large screws from the Main Bath to get space to apply grease.

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