Abhishek , R. Karnam , V.K.S. Kashyap , B. Mohanty
{"title":"A modular muon telescope for tomography and radiography applications","authors":"Abhishek , R. Karnam , V.K.S. Kashyap , B. Mohanty","doi":"10.1016/j.nima.2025.170399","DOIUrl":null,"url":null,"abstract":"<div><div>Cosmic-ray muons undergo multiple Coulomb scattering when passing through a material. Muon tomography is a non-invasive technique that exploits this feature of cosmic-ray muons and produces projectional image of the target volume. A tracking detector is simulated with four layers of Resistive Plate Chambers (RPC) of active area 160 × 160 mm<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span>, two for each upper and lower tracker. A Lead block of size 100 × 100 × 100 mm<span><math><msup><mrow></mrow><mrow><mn>3</mn></mrow></msup></math></span> is placed between the upper and lower trackers and its image is reconstructed using the Point of Closest Approach (PoCA) algorithm. The image reconstruction is further improved by implementing the Binned Clustering Algorithm (BCA). The simulation studies demonstrated that the designed muon telescope can distinguish high and medium atomic number (Z) materials and BCA can be used to image a miniature spent nuclear fuel dry cask. For building the tracker, four RPCs and four acrylic casings, to house the RPCs and signal readouts, are constructed. The measured cosmic-ray muon detection efficiency of RPC is <span><math><mo>∼</mo></math></span>95%. For the airtightness test, the relative humidity is monitored inside the acrylic casing for about 30 days. The design of the muon telescope, simulation studies and detector development activities are discussed.</div></div>","PeriodicalId":19359,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","volume":"1075 ","pages":"Article 170399"},"PeriodicalIF":1.5000,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0168900225002001","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}
引用次数: 0
Abstract
Cosmic-ray muons undergo multiple Coulomb scattering when passing through a material. Muon tomography is a non-invasive technique that exploits this feature of cosmic-ray muons and produces projectional image of the target volume. A tracking detector is simulated with four layers of Resistive Plate Chambers (RPC) of active area 160 × 160 mm, two for each upper and lower tracker. A Lead block of size 100 × 100 × 100 mm is placed between the upper and lower trackers and its image is reconstructed using the Point of Closest Approach (PoCA) algorithm. The image reconstruction is further improved by implementing the Binned Clustering Algorithm (BCA). The simulation studies demonstrated that the designed muon telescope can distinguish high and medium atomic number (Z) materials and BCA can be used to image a miniature spent nuclear fuel dry cask. For building the tracker, four RPCs and four acrylic casings, to house the RPCs and signal readouts, are constructed. The measured cosmic-ray muon detection efficiency of RPC is 95%. For the airtightness test, the relative humidity is monitored inside the acrylic casing for about 30 days. The design of the muon telescope, simulation studies and detector development activities are discussed.
期刊介绍:
Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section.
Theoretical as well as experimental papers are accepted.