Karlsruhe 2024 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 64: Detectors 7 (gas detectors)

T 64.2: Vortrag

Mittwoch, 6. März 2024, 16:15–16:30, Geb. 30.23: 2/17

Performance of new generation of Resistive Plate Chambers operating with alternative gas mixtures — •giorgia proto, hubert kroha, oliver kortner, Daniel soyk, nayana bangaru, and timur turkovic — Max-Planck-Institut fur Physik

The Resistive Plate Chambers (RPC) are gaseous detectors with excellent timing performance and are used for triggering on muons in the ATLAS experiment. They operate with the standard gas mixture, composed of C₂H₂F₄/i-C₄H₁₀/SF₆, because it allows the detector operation in avalanche mode, as required by the high-luminosity collider experiments. The C₂H₂F₄ and the SF₆ are now considered to be non-eco-friendly gases for their high Global Warming Potential (GWP). This gases are not recommended for industrial uses anymore, thus their availability will be increasingly difficult over time and the search for an alternative gas mixture is then of absolute priority within the RPC community. There are several studies on going which use different approach to find an alternative gas mixture suitable for experiment which work in high-radiation environment, as those operating at the Large Hadron Collider (LHC). One approach is to replace the standard gas with a mixture of HFO1234ze/CO₂/i-C₄H₁₀/SF₆. The second approach, currently under study by ATLAS and CMS collaborations, is to introduce a small fraction of CO₂ in the standard gas mixture and by reducing the amount of SF₆. In this presentation the results on the performance achieved using a 1 mm gas gap RPC with both types of gas mixtures are reported.

Keywords: Gaseous detectors; RPC; eco-friendly gas mixtures