[Dsg-ft] [Dsg-mvt] Mixing system

Marc McMullen mcmullen at jlab.org
Fri Sep 8 10:09:38 EDT 2017


Hi Maxime,

Currently the MVT mixing system is being evaluated by the Pressure 
Systems authority and a location is being discussed by the fire safety 
authority. If the location is moved outdoors, consideration must be 
given for the mass flow controllers. The controllers purchased are not 
specified to operate at a temperature lower than 50F.

DSG is currently looking into another option for an MFC, while Hall B is 
looking into locations and climate control possibilities for the MFCs.

With that said, Amrit and I have discussed the possibility for the 
mixing system to be completed by 9/15 (possibly not even 10/15) and we 
think it is not likely. George can provide further confirmation. If it 
is necessary to run a premix by then, that option needs to be expedited.

Regards,

Marc



On 9/6/2017 1:41 PM, mdefurne wrote:
> Dear George,
>
> Will the mixing system be ready for October 1st? If not when do you 
> expect to have it ready?
>
> If it is not ready before the 15th, we will absolutely need the gas 
> line ready so that we can plug a premix bottle to run tests: We will 
> not be able to enter the CVT in the solenoid if we do not check the 
> electronics connexion and gas lines. Indeed, once the CVT inside the 
> solenoid, the micromegas tiles and disks will not be accessible anymore.
>
> If there is any administrative paperwork to have a premix bottle 
> plugged on the gas line, please let me know.
>
> Thank you,
>
> Kind regards,
>
> Maxime
>
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-- 
Marc McMullen
Detector Support Group
757-269-7738



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