Difference between revisions of "Drift Chamber Gas System"
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(Created page with "=HallD Drift Chamber Gas system= Both the Central Drift Chambers (CDC) and the Forward Drift Chambers (FDC) use an Argon/CO2 gas mixture for operation with a very small addtion o...") |
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7 3 0(4)-20 mA Setpoint input (+) | 7 3 0(4)-20 mA Setpoint input (+) | ||
8 5 0(1)-5 Vdc Setpoint input (+) | 8 5 0(1)-5 Vdc Setpoint input (+) | ||
| − | 9 | + | 9 12 Power supply common |
10 8 Flow signal output common | 10 8 Flow signal output common | ||
11 4 +5 Vdc ref. output | 11 4 +5 Vdc ref. output | ||
Latest revision as of 11:18, 22 November 2013
HallD Drift Chamber Gas system
Both the Central Drift Chambers (CDC) and the Forward Drift Chambers (FDC) use an Argon/CO2 gas mixture for operation with a very small addtion of isopropanol to prevent chamber aging. The gas mixing is done with BROOKS mass flow controllers (MFC)of type 5850S powered and controlled by the BROOKS 0254 controller box.
Pin IN/OUT translation table for MFC and BOX:
MFC Box MFC point of view ---------------------------------------------- 1 6 Setpoint Return 2 10 0(1)-5 Vdc Flow signal output 3 -- 4 2 0(4)-20 mA Flow signal output 5 13 +15 Vdc to +28 Vdc Power supply 6 14 -15 Vdc Power supply (if required) 7 3 0(4)-20 mA Setpoint input (+) 8 5 0(1)-5 Vdc Setpoint input (+) 9 12 Power supply common 10 8 Flow signal output common 11 4 +5 Vdc ref. output 12 7 Valve override input 13 -- 14 -- Optional RS232C-RxD or RS485-A- 15 15 ----
