# Development of a portable muography detector for infrastructure degradation investigation

Kullapha Chaiwongkhot, Tadahiro Kin, Hiroaki Ohno, Ryo Sasaki, Yuta Nagata, Kazuhiro Kondo, Yukinobu Watanabe

### 抄録

A portable muography detector was developed for measuring infrastructure degradation and its performance was tested. The detector consists of two muon position sensitive detectors (mu-PSDs) of the area of 140 mm $\times \,\, 140$ mm, placed in a compact light-shielding box. Each mu-PSD consists of plastic scintillating fibers connected to multipixel photon counters (MPPCs). To suppress the gain deviation of the MPPCs, the box was heat insulated and its inner air temperature was maintained by Peltier cooling-heating modules. The mu-PSD pixel size was 8.75 mm $\times \,\, 8.75$ mm and the distance between the two mu-PSDs was set to 100 mm in order to achieve a solid angle resolution of 8 msr when measuring typical pieces of infrastructure at thicknesses of several tens of centimeters. The intensity of cosmic-ray muons was measured as a function of zenith angle on the ground and was found to be in good agreement with the well-known empirical formula for muon intensity at Earth's surface. The structural interior of a seven-story concrete building was then successfully imaged with the muography detector placed in the building's basement.

元の言語 英語 8410932 2316-2324 9 IEEE Transactions on Nuclear Science 65 8 https://doi.org/10.1109/TNS.2018.2855737 出版済み - 8 1 2018

### Fingerprint

muons
Detectors
detectors
boxes
counters
Photons
scintillating fibers
Concrete buildings
Interiors (building)
plastic fibers
Cosmic rays
photons
Earth surface
zenith
basements
Shielding
shielding
cosmic rays

### All Science Journal Classification (ASJC) codes

• Nuclear and High Energy Physics
• Nuclear Energy and Engineering
• Electrical and Electronic Engineering

### これを引用

Development of a portable muography detector for infrastructure degradation investigation. / Chaiwongkhot, Kullapha; Kin, Tadahiro; Ohno, Hiroaki; Sasaki, Ryo; Nagata, Yuta; Kondo, Kazuhiro; Watanabe, Yukinobu.

：: IEEE Transactions on Nuclear Science, 巻 65, 番号 8, 8410932, 01.08.2018, p. 2316-2324.

Chaiwongkhot, Kullapha ; Kin, Tadahiro ; Ohno, Hiroaki ; Sasaki, Ryo ; Nagata, Yuta ; Kondo, Kazuhiro ; Watanabe, Yukinobu. / Development of a portable muography detector for infrastructure degradation investigation. ：: IEEE Transactions on Nuclear Science. 2018 ; 巻 65, 番号 8. pp. 2316-2324.
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