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ligo-ex
ligo-ds
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| Richardson Lab Experimental Log |
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Message ID: 384
Entry time: Tue Jun 25 17:19:42 2024
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| Author: |
Luke |
| Type: |
Update |
| Category: |
VAC |
| Subject: |
Vacuum chamber leak checking |
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| Currently our main leak is in the RGA line. We found this by closing the gate valve from the main volume to see if which side was leaking more.
After identifying this we are pumping down the main volume to see how low it can go the third attachment was taken at 4:16 6/25/24. Pumping started around 3:15.
We have not been able to find exactly which flange is leaking, but our guess is on the small blanks and where the cube attaches to the gate valve as seen in the second attachment.
We will try a few more things and if the leak is not found/fixed we are planning on changing the configuration of the RGA line to remove the spherical cube, which we believe to be the problem. See fourth attachment for rough sketch of initial idea.
We have all of the parts required and they are clean and double bagged in 1129. I have not yet made all the measurements to confirm that this design is feasible. |
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