[Dsg-mvt] gas mixing system

[Marc McMullen]

Hi Franck,

  Starting Monday we will begin functionality test to verify the spare 
works as a normal mfc. Then we will swap it in, to observe the behavior, 
on the system with Argon and with C4H10. We have manpower to do the 
testing, we may suggest some changes to the valve panel, for instance an 
isolation valve on the flow side of the mass flow controllers would help 
with some of the troubleshooting. Hall B has assigned Todd Ewing as the 
MVT system technician.

For the current run you have two bottles of premix on hand, and 10 more 
on the way, this will give us time to get the mixing system tested and 
running.

Thanks,

Marc


On 12/8/2017 11:05 AM, Franck Sabatie wrote:
> Marc,
>
> just for clarification, I heard you mention you were busy on the RICH 
> detector today. I'm not sure when Brian will return from forced 
> vacation... I have a few practical questions to try and get to a 
> running condition with our mixing system:
>
> - When and how much time do you think you could dedicate to solving 
> the problem?
>
> - Do we need extra manpower on this and with which qualification? 
> (names would help)
>
> - Who is actually responsible for making this thing work properly? Is 
> it DSG? Hall B? I'm still confused at this all works.
>
> Neither Maxime nor myself are experts on gas system and we are of 
> little (technical) help even though we will of course assist as much 
> as we can. One thing that I can do however is making sure this is 
> taken seriously by management and that ressources are affected to this 
> issue. But I need a bit of help on how to proceed most efficiently :)
>
> Thanks again Marc !!!
> Franck

-- 
Marc McMullen
Detector Support Group
757-269-7738