Fieldable muon spectrometer using multi-layer pressurized gas Cherenkov radiators and its applications

TL;DR

This paper introduces a compact, portable muon spectrometer using multi-layer pressurized gas Cherenkov radiators, enabling accurate momentum measurement and spectrum reconstruction without bulky magnets.

Contribution

A novel, small-scale muon spectrometer design that accurately measures muon momentum and spectrum using Cherenkov radiators, eliminating the need for large magnetic spectrometers.

Findings

Achieves muon momentum resolution of ±0.5 GeV/c from 0.1 to 10 GeV/c

Reconstructs cosmic muon spectrum with approximately 90% accuracy

Portable and easily integrated with existing detectors

Abstract

Cosmic ray muons have been considered as a non-conventional radiation probe in various applications. To utilize cosmic ray muons in engineering applications, two important quantities, trajectory and momentum, must be known. The muon trajectories are easily reconstructed using two-fold detector arrays with a high spatial resolution. However, precise measurement of muon momentum is difficult to be achieved without deploying large and expensive spectrometers such as solenoid magnets. Here, we propose a new method to estimate muon momentum using multi-layer pressurized gas Cherenkov radiators. This is accurate, portable, compact (< 1m3), and easily coupled with existing muon detectors without the need of neither bulky magnetic nor time-of-flight spectrometers. The results show that not only our new muon spectrometer can measure muon momentum with a resolution of +-0.5 GeV/c in a momentum range of 0.1 to 10.0 GeV/c, but also we can reconstruct cosmic muon spectrum with high accuracy (~90%).