[dsg-svt] MVT Mix 1

[Marc McMullen]

Hi Maxime,

Hall B Engineering has informed DSG that the Mix 1 circuit is not 
currently needed for MVT/FT operations, and there are no current plans 
to connect a detector to Mix 1. If this is the case, please change the 
gas request Boolean, (B_DET_FMT_GAS_WANTGAS) which is being sent from 
the Saclay Gas Controls system so that it is not requesting gas.

Once this signal status has been changed, the mass flow controllers will 
no longer supply gas to fill that tank. It can then be pressure 
relieved, manually.

If the MVT Mix 1 MFCs are no longer needed, they should be uninstalled 
from the gas panel and returned to the DSG to prevent any unnecessary 
exposure to the weather.

*Please contact the DSG **_(prior to disconnecting the MFCs)_**if and 
when it is decided to uninstall the MFCs, so that we can make the 
necessary adjustments to the code. *

*It is very important to contact the DSG _before_ disconnecting power or 
network from any MFCs. **This may cause an interruption of gas service 
to other systems**.*


Regards,

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

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