[Dsg-rich] cooling test

[Marco Mirazita]

Today with Dario and Sandro we performed some test of the cooling 
system, see the log entry https://logbooks.jlab.org/entry/3510520

You can find a screenshot of the temperatue map here:
https://logbooks.jlab.org/entry/3510436

The cooling is now running with the air flow of 500 slm on the cooling 
line from patch panel A (top side) and 300 slm on the patch panel B 
(bottom side).

Marco