Yesterday, December 1st, I successfully installed and tested the gas system inside the faraday cage.

The changes performed were as follows:

• Remove He gas tank (to make room for new tank)
• Remove calibrated leak to connect new gas line
• Remove convectron gauge to install a high range dial manometer.

The tests were done manually and consisted as follows:

• Gas lines roughed by opening SV1.
• Tank regulator set to deliver 1 bar
• SV4 opened to allow the gas to enter the lines
• Dial manometer verified to  match the pressure set by the regulator
• Alternatively roughed and pressurized the lines by opening/closing SV1/SV4
• Tank lines emptied with SV1 and SV4 open simultaneously.

The test involve the lines up to SV5. The gas line portion from SV5 to the top of the HV cage was not included as it was removed for TM3 HV tests (se entry #822)

When the HV tests are concluded I will install a new line that will include a gauge.