論文

査読有り
2014年

Experimental study of source of background noise in muon radiography using emulsion film detectors

GEOSCIENTIFIC INSTRUMENTATION METHODS AND DATA SYSTEMS
  • R. Nishiyama
  • ,
  • S. Miyamoto
  • ,
  • N. Naganawa

3
1
開始ページ
29
終了ページ
39
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.5194/gi-3-29-2014
出版者・発行元
COPERNICUS GESELLSCHAFT MBH

The aim of this study is to ascertain and confirm the source of background noise in cosmic-ray muon radiography (muography) using emulsion film detectors. For this, we build two types of emulsion detectors with different momentum thresholds and perform test measurements of an actual geoscientific target. This experiment reveals that contamination of nonsignal particles with momenta of less than 2 GeV c(-1) cause significant systematic errors for the density estimation of muography. Utilizing the results of precedent studies, we conclude that the origin of these low-momentum particles is either electromagnetic components of air showers or cosmic-ray muons scattered in topographic material. In this paper, we analyze the emulsion data in detail, including the film-inefficiency compensation and momentum selection by applying an upper bound to the chi-square distribution for the data.

Web of Science ® 被引用回数 : 20

リンク情報
DOI
https://doi.org/10.5194/gi-3-29-2014
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000357286000004&DestApp=WOS_CPL
ID情報
  • DOI : 10.5194/gi-3-29-2014
  • ISSN : 2193-0856
  • eISSN : 2193-0864
  • Web of Science ID : WOS:000357286000004

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