02/07/2014R. Guida CERN/PH-DT-DI1 RPC R&D Collaboration PH-DT Topics of Interest Studies of gas systems performance and development of dedicated gas modules.

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02/07/2014R. Guida CERN/PH-DT-DI1 RPC R&D Collaboration PH-DT Topics of Interest Studies of gas systems performance and development of dedicated gas modules for new RPC gas mixtures Studies of new gas mixtures and system aspects (at GIF++) These activities integrate well within current R&D efforts and interests of the PH-DT Gas Service Project

02/07/2014R. Guida CERN/PH-DT-DI2 Gas system service support Gas systems Expertise: design and construction of gas systems Possibility to contribute to:  Mixers for R&D  Gas recirculation systems  Compatibility of new gases with gas systems materials/components  Gas mixture purification studies (GIF++, …)

R. Guida CERN/PH-DT-DI3 Mixer for R&D studies Construction of mixers for R&D:  Use of clean components validated following procedures used for LHC gas systems  Easy to use, state of the art control systems  Possibility to perform checks/calibration of Bronkhorst flow-regulator at CERN Gas systems 02/07/2014

R. Guida CERN/PH-DT-DI4 Recirculation system for R&D Two small gas systems (same principle of the real ones used at the LHC experiments) developed for testing the effects of gas recirculation:  Prototype used at GIF (2003)  New simplified version for lab R&D ( ) Gas systems 02/07/2014

R. Guida CERN/PH-DT-DI5 Gas system operation with new gases Test the compatibility of new freons/gases with components used for the construction of the present gas systems:  Pressure regulators, MFCs, joints, pump, flow-cells (distribution racks)  Verify basic functionalities: ▫Gas systems operation ▫Flow-read out ▫Purity of primary gas supply ▫Gas analysis devices ▫Safety/Enviromental requirements  Gas system operation with detectors: ▫Mixture stability ▫Pressure/flow regulation ▫Mixture distribution on large experimental apparatus ▫Mixture purification (O2, H2O and other impurities) New gases 02/07/2014

R. Guida CERN/PH-DT-DI6 Mixture purifications Repeat the gas mixture purification study for new gases (like Freons) as performed at GIF in the past years: ▫List/identify the impurities created under high particle rates ▫Assign to each a danger factor according to the RPC performance ▫Optimize the mixture purification and operation at LHC New gases 02/07/2014

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