Time resolution and characteristic study of MWPC detectors with different Argon based gas

TL;DR

This study investigates the performance of MWPC detectors with different Argon-based gas mixtures, focusing on gain, energy, and timing resolution, and reports a time resolution of approximately 10 ns.

Contribution

The paper presents a detailed characterization of MWPC detectors with specific gas mixtures, including novel measurements of timing resolution and energy spectrum analysis.

Findings

Time resolution around 10 ns achieved

Energy spectrum obtained with $^{55}$Fe source

Gain and energy resolution characterized for different gas ratios

Abstract

A prototype of Multi-Wire Proportional Chambers (MWPC) has been fabricated for the study of its various characteristics. The detector contains gold-coated tungsten wires (20 $\mu m$ diameter) on the anode frame, with a pitch of 2.8 mm. The gap between the anode and the cathode is 3 mm and the gap between anode and read-out is also 3 mm. Detailed study of MWPC in terms of gain, energy and timing resolution and efficiency measurements have been performed. The detector has been operated using Ar/CO$_{2}$ gas mixtures with 70:30 and 90:10 ratio. Energy spectrum of $^{55}$Fe X-ray source is obtained for the detector. The gain and energy resolution of the detector were calculated using X-ray spectrum. Time resolution is obtained $\sim$10 ns.