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Research Papers

Application of Monte Carlo Simulation to Design of Sampler and Detector in Radiation Monitoring System

[+] Author and Article Information
Kei Sugihara

Toshiba Corporation,
1, Toshiba-Cho,
Fuchu-Shi, Tokyo 183-8511, Japan
e-mail: kei.sugihara@toshiba.co.jp

Hirotaka Sakai

Toshiba Corporation,
1, Toshiba-Cho,
Fuchu-Shi, Tokyo 183-8511, Japan
e-mail: hirotaka.sakai@toshiba.co.jp

Kanako Hattori

Toshiba Corporation,
1, Toshiba-Cho,
Fuchu-Shi, Tokyo 183-8511, Japan
e-mail: kanako.hattori@toshiba.co.jp

Genki Tanaka

Toshiba Corporation 8, Shinsugita-Cho,
Isogo-Ku,
Yokohama 235-8523, Japan
e-mail: genki1.tanaka@toshiba.co.jp

Mitsunobu Hayashi

Toshiba Corporation,
8, Shinsugita-Cho, Isogo-Ku,
Yokohama 235-8523, Japan
e-mail: mitsunobu.hayashi@toshiba.co.jp

Toshiaki Ito

Toshiba Corporation,
8, Shinsugita-Cho, Isogo-Ku,
Yokohama 235-8523, Japan
e-mail: toshiaki17.ito@glb.toshiba.co.jp

Naotaka Oda

Toshiba Corporation,
8, Shinsugita-Cho, Isogo-Ku,
Yokohama 235-8523, Japan
e-mail: naotaka.oda@toshiba.co.jp

Manuscript received October 26, 2017; final manuscript received March 30, 2018; published online September 10, 2018. Assoc. Editor: Guanghui Su.

ASME J of Nuclear Rad Sci 4(4), 041021 (Sep 10, 2018) (7 pages) Paper No: NERS-17-1191; doi: 10.1115/1.4039968 History: Received October 26, 2017; Revised March 30, 2018

In this study, the applicability of Monte Carlo code particle and heavy ion transport code system (PHITS) [Sato et al. (2013, “Particle and Heavy Ion Transport Code System PHITS, Version 2.52,” J. Nucl. Sci. Technol., 50(9), pp. 913–923)] to the equipment design of sampler and detector in the radiation monitoring system was evaluated by comparing calculation results with experimental results obtained by actual measurements of radioactive materials. In modeling a simulation configuration, reproducing the energy distribution of beta-ray emitted from specific nuclide by means of Fermi Function was performed as well as geometric arrangement of the detector in the sampler volume. The reproducing and geometric arrangement proved that the calculation results are in excellent matching with actual experimental results. Moreover, reproducing the Gaussian energy distribution to the radiation energy deposition was performed according to experimental results obtained by the multi-channel analyzer. Through the modeling and the Monte Carlo simulation, key parameters for equipment design were identified and evaluated. Based on the results, it was confirmed that the Monte Carlo simulation is capable of supporting the evaluation of the equipment design.

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References

Hattori, K. , Tsuboi, Y. , Sakai, H. , Sumita, A. , Makino, S. , Sasaki, S. , Iino, D. , Hirabayashi, H. , and Aoki, M. , 2010, “ Development of Surface Contamination Monitors in Nuclear Facilities,” 24th Workshop on Radiation Detectors and Their Uses, Tsukuba, Japan, Jan. 26–28, pp. 179–184.
Rito, H. , Iwano, K. , Yamauchi, T. , and Oda, K. , 2011, “ Design of Active-Type Personal Dosemeter for High-Energy Neutrons,” Prog. Nucl. Sci. Technol., 1, pp. 158–161. [CrossRef]
Hayashi, M. , Nishizawa, H. , Nakajima, H. , and Nakanishi, M. , 2011, “ A Response Study With Combination of Particle Transport and Optical Transport Calculation for Scintillation Detector,” 18th EGS Users' Meeting in Japan, Tsukuba, Japan, Aug. 9–11, pp. 20–25.
Kouno, R. , and Ishigaki, N. , 2011, “ Counting Efficiency of Sealed Sheet Sources for Calibration of Whole-Body Counters by Monte Carlo Simulation,” 18th EGS Users' Meeting in Japan, Tsukuba, Japan, Aug. 9–11, pp. 26–29.
Sakai, H. , Hattori, K. , and Umemura, N. , 2016, “ Applicability of Monte-Carlo Simulation to Equipment Design of Radioactive Noble Gas Monitor,” JPS Conf. Proc., 11, p. 070004.
Sato, T. , Niita, K. , Matsuda, N. , Hashimoto, S. , Iwamoto, Y. , Noda, S. , Ogawa, T. , Iwase, H. , Nakashima, H. , Fukahori, T. , Okumura, K. , Kai, T. , Chiba, S. , Furuta, T. , and Sihver, L. , 2013, “ Particle and Heavy Ion Transport Code System PHITS, Version 2.52,” J. Nucl. Sci. Technol., 50(9), pp. 913–923. [CrossRef]
IEC, 2007, “ Radiation Protection Instrumentation—Equipment for Sampling and Monitoring Radioactive Noble Gases,” International Electrotechnical Commission, Geneva, Switzerland, Standard No. IEC 62302 ed.1.0.
Kato, H. , Koga, S. , Mukoyama, T. , Tomatsu, H. , Suzuki, Y. , and Suzuki, S. , 2009, “ Dose Evaluation Assessment of Contaminated Skin With Radioactive Substances,” Japn. J. Health Phys., 44(4), pp. 380–386. [CrossRef]
IEC, 2002, “ Equipment for Continuous Monitoring of Radioactivity in Gaseous Effluents—Part 3: Specific Requirements for Radioactive Noble Gas Monitors,” International Electrotechnical Commission, Geneva, Switzerland, Standard No. IEC 60761-3 ed.2.0.

Figures

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Fig. 1

Configuration of gas monitor

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Fig. 2

Calculated results for energy spectrum of 85Kr

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Fig. 3

Structure of 204Tl radiation source

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Fig. 4

Structure of 90Sr Radiation source

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Fig. 6

Detection probability of 204Tl at each distance

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Fig. 7

Detection probability of 90Sr at each distance

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Fig. 8

Structure of radiation detector

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Fig. 9

Three-dimensional (3D) Representation of simulation configuration

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Fig. 10

Comparison between initial simulation and experiment (204Tl, 1 cm)

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Fig. 11

Comparison between simulation and experiment (204Tl, 1 cm)

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Fig. 12

Comparison between simulation and experiment (204Tl, 3 cm)

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Fig. 13

Comparison between simulation and experiment (204Tl, 5 cm)

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Fig. 14

Comparison between simulation and experiment (90Sr, 1 cm)

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Fig. 15

Comparison between simulation and experiment (90Sr, 3 cm)

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Fig. 16

Comparison between simulation and experiment (90Sr, 5 cm)

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Fig. 17

Structure of gas monitor

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Fig. 18

3D Representation of modeled gas monitor version

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Fig. 19

C/E ratio applying energy resolution

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Fig. 20

Comparison of simulation results for 133Xe

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Fig. 21

Comparison of simulation results for 85Kr

Tables

Errata

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