Triple Gas Electron Multiplier (GEM) detectors will be used as a tracking device in the first two stations of CBM MUon CHamber (MUCH), where the maximum particle rate is expected to reach ~1 MHz/cm2 for central Au-Au collisions at 8 AGeV. Therefore, the stable operation of the detector is very important. Discharge probability has been measured of a single mask triple GEM detector at the CERN SPS/H4 beam-line facility with a pion beam of ~150 GeV/c and also in an environment of highly ionizing shower particles. The spark probability as a function of gain has been studied for different particle rates. The details of the experimental setup, method of spark identification and results are presented in this paper.
@article{arxiv.2107.00883,
title = {Spark probability measurement of a single mask triple GEM detector},
author = {S. Chatterjee and U. Frankenfeld and C. Garabatos and J. Hehner and T. Morhardt and C. J. Schmidt and H. R. Schmidt and C. A. Lymanets and S. Biswas},
journal= {arXiv preprint arXiv:2107.00883},
year = {2021}
}