[Dsg-halla_gas] [EXTERNAL] Re: GEM gas distribution test setup

[Marc Mcmullen]

Hi Anu and Chuck,

When we get back from break, I'll discuss changing out the flow meter valves for a more sensitive range (maybe 0 to 100 sccm) with George and see what he advises.

During your leak checking, can you make note of what tubing was changed out. We are keeping a record of issues with the system. I have provided a spread sheet with the two connection for each length of tubing. If you could put a yes or no in the indicated cell it would help us understand where the leaks are.

If there are other leaks please feel free to expand the chart. Also pictures of the new tubing would help.

        Manifold to Flow Meter Panel    Flow Meter Panel to Gas Flow Sensor chassis
Ch1
Ch2
Ch3
Ch4
Ch5
Ch6
Ch7
Ch8

Regards,
Marc
________________________________
From: Anuruddha Rathnayake <adr4zs at virginia.edu>
Sent: Wednesday, December 23, 2020 12:35 PM
To: Marc Mcmullen <mcmullen at jlab.org>
Cc: dsg-halla_gas at jlab.org <dsg-halla_gas at jlab.org>
Subject: [EXTERNAL] Re: [Dsg-halla_gas] GEM gas distribution test setup

Hi Marc,

There has been several leaks in the gas pannel and Chuck replaced all the Nylon tubing with Poly Ethylene tubging today morning. Now we are flushing the system and planning to connect the GEMs in the afternoon, if there are no more issues.

Best
Anu

On Wed, 23 Dec 2020, 11:24 Marc Mcmullen, <mcmullen at jlab.org<mailto:mcmullen at jlab.org>> wrote:
Hi Kondo,

I was just checking to see if there was an update on the test setup and if there are plans to flow gas during the holiday break.

Regards,
Marc
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