[Dsg-mvt] Start testing with isobutane?

[mdefurne]

Dear all,

I would like to meet you tomorrow in the counting house to discuss about 
testing the mixing system with isobutane. For the first tests, we must 
bypass the detectors. To do so, we must go in the Hall to open two 
valves. It cannot be done in beam permit.

Therefore I want to start testing it at 9:30am tomorrow (I have a 
meeting with Saclay and won t be available before 9:30am tomorrow). And 
again, without a formal approval coming from you guys, I won't start 
anything.

However, we have many things to test about the gas in micromegas. If we 
can have the MFCs working tomorrow, with reasonable temperature, it 
would be great.

Finally I plan also to meet Tim Minga, the flammability expert for OSP 
if I am correct, to discuss about closing the rack and put a heater in 
it to keep also the tank at reasonable temperature. Maxence told me 
today he witnessed isobutane condensing in a pipe at 15psi if the 
temperature gets cold outside. But it should not be a concern for the 
next 2 days considering the expected temperature.

Kind regards,

Maxime