R. Guida CERN/PH-DT-DI 102/07/2014

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

R. Guida CERN/PH-DT-DI 202/07/2014

Gas system service supportGa

s sys

tem

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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-DI 3

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 s

yste

ms

02/07/2014

R. Guida CERN/PH-DT-DI 4

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 (2012-2014)

Gas s

yste

ms

02/07/2014

R. Guida CERN/PH-DT-DI 5

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

gas

es

02/07/2014

R. Guida CERN/PH-DT-DI 6

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

gas

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02/07/2014