Muon energy and track measuring and imaging system and method

Abstract

The invention discloses a muon energy and track measuring and imaging system and a method. The system comprises a detected object, a muon track measuring sub system, a muon energy measuring sub system and a muon calculating and imaging sub system, wherein natural muon in universe passes through the detected object; the muon track measuring sub system is connected with the detected object for measuring track information of muon passing through the detected object; the muon energy measuring sub system is connected with the detected object for measuring energy information of muon passing through the detected object; the muon calculating and imaging sub system is connected with the muon track measuring sub system and the muon energy measuring sub system for comprehensively utilizing the energy information and the track information of muon passing through the detected object for reconstructing an image of the detected object. The invention has the advantages of high degree of information comprehensive utilization and good imaging quality.

Description

technical field [0001] The present invention relates to the fields of radiation measurement and radiation imaging, in particular to a cosmic ray muon (abbreviated as muon, hereinafter referred to as abbreviation) energy, track measurement and imaging system and method. Background technique [0002] In 1936, Anderson and his student Niedermeier used a cloud chamber to reveal the existence of muons (muons) in cosmic rays when they used a 1cm thick platinum plate to measure the energy loss of cosmic rays. As a highly penetrating high-energy charged particle, muons can easily penetrate thick shielding layers. The rest mass is 105.7 MeV, which is about 207 times the mass of electrons. It can be either positively or negatively charged . Muons are charged particles with a mass between electrons and protons, so when muons interact with matter, μ+ is more like a light proton or a heavy positron, and μ- is more like a heavy electron. This makes its interaction with matter quite comp...

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Problems solved by technology

[0010] Therefore, muon imaging is mainly used in the field of detection and imaging of high-Z matter (that is, heavy nuclear materials, such as radioactive elements). The image of the object under inspection is reconstructed according to the scattering angle distribution, and the value of β in the scattering angle distribution formula used is 1, which does not make full use of the energy information of muons

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