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  Richardson Lab Experimental Log  Not logged in ELOG logo
Message ID: 563     Entry time: Mon Apr 28 22:08:28 2025
Author: Luis 
Type: Update 
Category: VAC 
Subject: Vacuum Leak Test result 

[Ma, Luke, Luis]

April 24, 2025

3:00 PM
Ma and Luis attempted to connect to the RGA to initialize the leak test but encountered some difficulties.

3:20 PM
After restarting both the computer and the RGA, we realized that the DB9 cable was not connected to Spica. After connecting it, we had no further issues communicating with the RGA.

3:30 PM
Luke and Luis performed the leak test. There were no significant leaks in the vacuum system. The highest leak rates we found are listed in the table below; the rest of the entries were limited by noise, as we could not detect any change in the program after spraying the ports with He.

Connection Leak rate (torr)
ZLR(2.75"-4.5") - Reducing Cross 6.0e-12
Cross - Turbo Pump (small) 1.4e-11
Port - Pressure Sensor 8.0e-12
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