Measurement of basic characteristics and gain uniformity of a triple GEM detector

Abstract

Large area Gas Electron Multiplier (GEM) detectors have been the preferred choice for tracking devices in major nuclear and particle physics experiments. Uniformity over surface of the detector in terms of gain, energy resolution and efficiency is crucial for the optimum performance of these detectors. In the present work, detailed performance study of a 10x10 cm^2 triple GEM detector operated using Ar and CO_2 gas mixtures in proportions of 70:30 and 90:10, has been made by making a voltage scan of the efficiency with 106^Ru-Rh beta-source and cosmic rays. The gain and energy resolution of the detector were studied using the X-ray spectrum of 55^Fe source. The uniformity of the detector has been investigated by dividing the detector in 7x7 zones and measuring the gain and energy resolution at the center of each zone. The variations of the gain and energy resolution have been found to be 8.8% and 6.7%, respectively. These studies are essential to characterise GEM detectors before their final use in the experiments.

Accepted for publication in Nuclear Instruments and Methods in Physics Research Section A, 7 pages, 15 figures

References in corpus (5)

• Development of Tracking Detectors with industrially produced GEM Foils
• The Resistive-Plate WELL with Argon mixtures - a robust gaseous radiation detector
• Study of the characteristics of GEM detectors for the future FAIR experiment CBM
• Characterizations of GEM detector prototype
• Building a large-area GEM-based readout chamber for the upgrade of the ALICE TPC

Cited by in corpus (4)

• Study of uniformity of characteristics over the surface for triple GEM detector
• Characteristic study of a quadruple GEM detector and its comparison with a triple GEM detector
• Development of a water-based cooling system for the Muon Chamber detector system of the CBM experiment
• Comparative study on charging-up of single, double and triple Gas Electron Multipliers (GEM)