[Dsg-ft] MVT mixing system - Lite Version

[George Jacobs]

Summery of changes;

The cylinder gas supply is minimized, only 1 cyl each of C4H10 and CF4. 
Eliminates pressure regulators, a 2nd heater blanket, and piping 
components associated with them.

There are no scales to monitor the gas supply. Gas cylinder contents 
remaining will need to be checked manually by hall B. There will be no 
alarms or warnings, no cylinder fill status.

There are no spares listed for any components. If one of the components 
fails, system is down until a spare can be procured.

The MFCs are all calibrated for N2 instead of for CF4 or C4H10. Reduces 
the initial cost and the cost of spares. Requires using gas correction 
factors in the instrument setup. There may be some reduction in the 
absolute accuracy of the mix percentages, but the mix will remain 
consistent.

George


On 06/06/2017 01:17 PM, Volker Burkert wrote:
> George,
> Thanks for the information.
>
> Questions:
> What parts of the full system does the "lite system" include and what parts does it not include?
> If we go with "lite", what is the impact on the operation of the gas system?
> Thanks,
> Volker
>
>
> Or asked differently,
>
>
>
> ----- Original Message -----
> From: "George Jacobs" <jacobsg at jlab.org>
> To: dsg-mvt at jlab.org, dsg-ft at jlab.org, "Bob Miller" <rmiller at jlab.org>, "Matt Marchlik" <marchlik at jlab.org>, "burkert Burkert" <burkert at jlab.org>, "Stepan Stepanyan" <stepanya at jlab.org>
> Sent: Tuesday, June 6, 2017 12:39:00 PM
> Subject: MVT mixing system - Lite Version
>
> Please find attached the "Lite" version. Note this cost does not account for any spares.

-- 
George Jacobs
Physics Detector Support Group
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606

(office) 757-269-7115

(cell)   757-876-0480

(email) jacobsg at jlab.org

(website) https://userweb.jlab.org/~jacobsg