Study of RPC gas mixtures for the ARGO-YBJ experiment
B. Bartoli, R. Buonomo, E. Calloni, S. Catalanotti, B. D'Ettorre, Piazzoli, G. Di Sciascio, M. Iacovacci (INFN, Dipartimento di Fisica, dell'Universita' di Napoli, Italy)
TL;DR
This study evaluates various RPC gas mixtures to optimize timing resolution, efficiency, and noise levels for the ARGO-YBJ experiment's cosmic ray detection at high altitude.
Contribution
It provides experimental data on RPC performance with different gas mixtures, tailored for high-altitude cosmic ray detection.
Findings
Identified gas mixtures achieving 1 ns timing resolution
Optimized RPC efficiency and noise levels for experimental needs
Demonstrated suitability of specific gas mixtures for high-altitude operation
Abstract
The ARGO-YBJ experiment consists of a RPC carpet to be operated at the Yangbajing laboratory (Tibet, P.R. China), 4300 m a.s.l., and devoted to the detection of showers initiated by photon primaries in the energy range 100 GeV - 20 TeV. The measurement technique, namely the timing on the shower front with a few tens of particles, requires RPC operation with 1 ns time resolution, low strip multiplicity, high efficiency and low single counting rate. We have tested RPCs with many gas mixtures, at sea level, in order to optimize these parameters. The results of this study are reported.
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