Discriminating cosmic muon and x-ray based on rising time using GEM detector

TL;DR

This paper develops a triple GEM detector and demonstrates its capability to distinguish cosmic muons from X-rays based on rising time measurements, enhancing particle identification methods.

Contribution

The work introduces a GEM detector setup specifically for discriminating cosmic muons from X-rays using rising time analysis, which is a novel application in this context.

Findings

GEM detector shows good energy resolution with 55Fe source.

Cosmic muons and X-rays can be effectively discriminated by rising time thresholds.

The method provides a new approach for particle identification in radiation detection.

Abstract

Gas electron multiplier(GEM) detector is used in Cosmic Muon Scattering Tomography and neutron imaging in the last decade. In this work, a triple GEM device with an effective readout area of 10 cm X 10 cm is developed, and an experiment of discriminating between cosmic muon and x-ray based on rising time is tested. The energy resolution of GEM detector is tested by 55Fe ray source to prove the GEM detector has a good performance. The analysis of the complete signal-cycles allows to get the rising time and pulse heights. The experiment result indicates that cosmic muon and x-ray can be discriminated with an appropriate rising time threshold.