Stability study of GEM chamber using radioactive source

TL;DR

This paper investigates the stability and performance of a GEM detector prototype under high radiation using a radioactive source, focusing on efficiency, gain, and energy resolution for potential high-rate experiments.

Contribution

It provides a detailed study of GEM detector stability under radioactive source irradiation, which is crucial for high-rate experimental applications.

Findings

Stable efficiency observed under high radiation

Performance metrics meet experimental requirements

Demonstrates suitability for high-rate heavy-ion experiments

Abstract

Gas Electron Multiplier (GEM) is a cutting edge Micro Pattern Gaseous detector (MPGD) technology suitable as tracking device in high rate Heavy-Ion (HI) experiments for their good spatial resolution and most importantly high rate handling capability. The performance studies including the detector efficiency, gain, energy resolution and also the stability study under high radiation are most important aspects, to be investigated before using the detector in any experiment. In this work, all of the above mentioned aspects are investigated using a 55Fe X-ray source for a single mask triple GEM chamber prototype operated with premixed Argon/CO2 (Ar/CO2) gas mixture in 70/30 volume ratio. In this article, particularly the stability in efficiency using a radioactive source is discussed in detail.