PHENIX Muon Tracking Detector Gas System

The Muon Tracking Detector Gas System was designed and fabricated to supply Ar+30% CO2+20% CF4 mixture to the PHENIX [K. Adcox, S.S. Adler, M. Aizam, et al., Nucl. Instr. and Meth. A 499 (2003) 669.] [1]. Muon Tracking (MuTr) chambers located at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven Nation Lab (BNL). The gas system purpose is to provide gas at the requested mixture at a constant controlled pressure and at various flow rates. The system can do this while monitoring the mixture's temperature, pressure, flow rate, and CO2, oxygen, and moisture content. A custom computer data acquisition system collects and logs the gas system operating parameters. This system can also be alarmed to provide automatic responses to undesired system conditions.