Abstract
Abstract. A portable cosmic muon detector has been developed for geophysical applications: searching for large scale underground rock/soil inhomogeneities and underground cavities. The designed muon telescope called a muon tomograph is based on the recently developed closed cathode chamber (CCC) technology, which provides a cheap, easy handling, portable, and power efficient detector system able to work even in extreme conditions (e.g. high humidity, low/high temperature). The muon telescope has a detection surface of approximately 0.1 m2 with a 10 mrad angular resolution. Tests have been performed in natural caves and artificial tunnel systems as well. In this paper a summary of the first results on tomographic cavities are presented and the geophysical and possible industrial use of the cosmic muon tomographic technology is indicated.
Highlights
Methods and DataDiscuss.: 24 September 2012 Revised: 4 December 2012 – Accepted: 10 December 2012 – Published: 18 December 2012
Cosmic muons have already been applied for environmental studies, such as measurements of snow depth on mountains (George, 1955), search for hidden chambers in the Kephren Pyramid (Alvarez et al, 1970), and investigation of the inner structure of volcanos (Nagamine et al, 1995; Tanaka et al, 2007; Lesparre et al, 2010)
Our portable muon tomograph is similar to those applied in particle physics instrumentations, but it has been specially developed and built for geophysical applications with the main emphasis on power efficiency and portability
Summary
Discuss.: 24 September 2012 Revised: 4 December 2012 – Accepted: 10 December 2012 – Published: 18 December 2012
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