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

[Anuruddha Rathnayake]

Hi Marc,

For the flow meters range, we'll have to talk with Kondo. I think we'll
need atleast 300 cc/min (max value).
Kondo: I think as we discussed, 300 cc/min is equals to 20 untis of flow
rate in the flow meters we have in the clean room.
. Is that the highesst we would need? (300 cc/min)

Best
Anu

On Wed, 23 Dec 2020, 13:54 Marc Mcmullen, <mcmullen at jlab.org> wrote:

> 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> 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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