Gas Analysis Status of the setup Introduction The Varian CP4900 is a gas chromatography system Connected to 46 streams of gas from CMS CSC RPC and DT Setup ID: 1043296
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1. CMSGalaxy varian CP-4900 GC Gas AnalysisStatus of the setup
2. IntroductionThe Varian CP-4900 is a gas chromatography systemConnected to 46 streams of gas from CMS: CSC, RPC and DTSetup with three types of detectors:OV1 (separate hydrocarbons from C4 to C12)PPU (separate hydrocarbons from C1 to C4)MS (separate permanent and noble gas)
3. System summarizedA gas chromatographic system consists of:• A regulated and purified carrier gas source, which moves the sample through the GC• An inlet, which also acts as a vaporizer for liquid samples• A column, in which the time separation occurs• A detector, which responds to the components as they occur by changing its electrical output• Data interpretation of some sort
4. Schematic viewEach valves are connected to 16 stream + 1 output.46 different stream can be analysed:11 from CSC6 from DT27 from RPC
5. SEtup
6. Gc reparationFirst problem: Impossibility to modify the position of the valve - Solved by resetting the position using the manual controller and the multiposition actuator control moduleSecond problem: Valve automatisation through software not working - Solved by reconstruction of the system inside the configuration software of the Galaxy GC
7. CHROMATOGRAM
8. Carrier GasUse of gas bottles for now because of the possibility of contamination of helium supply lines.Helium bottle: 40 bar.Argon bottle: 200 bar.
9. NEXT STEPCheck if the helium supply line is contaminated: Need of high purity heluim to use as carrier gas (Risk of damage of the µGc if not).Open the gas lines to begin the gas analysis of CMS.