Development of Affordable Compact Muon Radiology Camera using Geiger–Müller Tube Arrays

Su Shih-Chieh¹, Chen Ying-Chih^1*, Jiwoo Nam^1,2

¹Department of Physics, National Taiwan University, Taipei, Taiwan
²Leung Center for Cosmology and Particle Astrophysics, National Taiwan University, Taipei, Taiwan

* Presenter:Chen Ying-Chih, email:rssh94140@gmail.com

Geiger–Müller Muon Telescope in Taiwan (GMT²) is an education program for undergraduate students in LeCosPA, National Taiwan University (NTU), to develop an affordable compact Muon Radiology Camera using Geiger–Müller (GM) Tube Arrays. GMT² consists of two 18 cm x 18 cm identical detector planes aligned on the axis at a distance. The arrival direction of a muon can be obtained by extrapolating the impact points recorded on each detector plate. The field of view (FOV) is tunable by adjusting the distance between the detector planes. A detector plane is composed of two orthogonal 1-D arrays of 8 GM tubes (L=18cm, D=22mm), providing an 8x8 grid for the detector plane. A cost-effective high voltage supply and readout electronics with a micro-controller were developed for this project. A radiograph of Leung Cosmology Hall building at NTU was successfully taken as the first demonstration of this project. In this presentation, we describe design, production, calibration, as well as simulation studies. Future prospects are also discussed.

Keywords: muon radiography, education particle detector, cosmic muons, Geiger Muller tubes