A Measurement of the Residual Radioactivity with NaI Survey Meter and Its MC Simulation

WANG Qing-Bin; Kazuyoshi Masumoto; Hideo Hirayama; Tokushi Shibata

Chinese Physics C> 2007, Vol. 31> Issue(11) : 1071-1075

A Measurement of the Residual Radioactivity with NaI Survey Meter and Its MC Simulation

Institute of High Energy Physics, CAS, Beijing 100049, China2 Radiation Science Center, High Energy Accelerator Research Organization KEK, Japan

Abstract
HTML
Reference
Related

PDF

Abstract：
The present study shows how Monte Carlo method using EGS4 code can be useful for evaluating the residual radioactivity induced in shielding concrete of accelerator facilities. By using EGS4 code, the response of NaI survey meter concerning the shielding concrete block radius and thickness are calculated. It is found that the surface dose rate is saturated when the shielding concrete radius and thickness reach 40cm and 30cm respectively. Under the above-mentioned conditions, the surface dose rates at position north-8 and south-9 of SF cyclotron in University of Tokyo, are investigated, and compared with the experimental results obtained by NaI survey meter. It is shown that the calculation results are in good agreement with the experiments. In addition, the conversion factor of the surface dose rate to urface residual radioactivity is obtained to be 0.90(Bq·g^－1)·(μSv·h^－1)^－1 for ⁶⁰Co and 1.26(Bq·g^－1)·(μSv·h^－1)^－1 for ¹⁵²Eu. By using this conversion factor, we can easily evaluate the radioactivity induced in shielding concrete of accelerator facilities from the experimental results of NaI survey meter.

References

[1]

. SwansonWP. Radiological Safety Aspects of the Operation of Electron Linear Accelerators. Vienna: IAEA Technical Reports Series No.188, 19792. Phillips A B, Prull D E, Ristinen R A et al. J. Health Phys.,1986, 51: 337-3423. Urabe I, Kobayashi K. Health Phys., 1991, 60: 587-5914. Kimura K, Ishikawa T, Kinno M et al. Health Phys., 1994,67: 612-6315. Nelson W R, Hirayama H, Rogers D W O. The EGS4 Code System, SLAC-265. 19856. Kotegawa H et al. JAERI-M 93-020, 19937. Firestone R B, Shirley V S. Table of Isotopes (CD-ROM).Eighth Edition, Version 1.0. March 19968. Masumoto K, Toyota A, Eda K et al. Journal of Radioan-alytical and Nuclear Chemistry, 2003, 255: 465-469

[1]	FANG Yong-De , ZHANG Yu-Hu , ZHOU Xiao-Hong , GUO Ying-Xiang , LEI Xiang-Guo , GUO Song , HUA Wei , MA Long , GUO Wen-Tao . Test Experiments of Gamma-Ray Linear Polarization Using a Clover Detector. Chinese Physics C, 2007, 31(10): 938-941.
[2]	GUI Jian-Bao , GUO Jin-Chuan , YANG Qin-Lao , NIU Han-Ben . Use of Monte Carlo Method to Evaluate the Response of Direct Conversion X-Ray Detectors. Chinese Physics C, 2007, 31(10): 933-937.
[3]	OUYANG Xiao-Ping , LI Zhen-Fu , WANG Qiu-Shu , HUO Yu-Kun . Thin Plastic Scintillating Foil for Measuring Pulsed Neutron Flux in High Gamma-Ray Environment. Chinese Physics C, 2005, 29(4): 399-403.
[4]	SHI Zong-Ren , XU Kun , DING Sheng-Yao , WANG Shun-Qing , GUO Zhi-Rong , ZUO Liang-Zhou . The Efficiency Mearurement of NaI(Tl) Detector for a Long Tube Volume Source of 6.13MeV Gamma-Ray. Chinese Physics C, 2005, 29(2): 124-129.
[5]	REN Zhong-Zhou , Xu Chang , Wang Zai-Jun . Cluster Radioactivity of Heavy Nuclei. Chinese Physics C, 2004, 28(12): 1245-1247.
[6]	HUANG Wen-Xue , WANG Yue , XU Hu-Shan , SUN Zhi-Yu , XIAO Guo-Qing , ZHAN Wen-Long . RFQ Cooler and Buncher for Radioactive Ion Beam. Chinese Physics C, 2004, 28(S1): 90-92.
[7]	DAI Chang-Jiang , HE Hui-Lin , YE Zi-Piao , SHENG Xiang-Dong . Development of a New Detector for Solar Neutrino Detection. Chinese Physics C, 2004, 28(5): 526-531.
[8]	REN Shao-Jun , SANG Wen-Bin , JIN Wei , LI Wan-Wan , ZHANG Qi , MIN Jia-Hua . Primary Study of Monte Carlo Simulation on CdZnTe Nuclear Detector. Chinese Physics C, 2004, 28(2): 191-195.
[9]	SONG Ming-Tao , YANG Xiao-Dong , XIA Jia-Wen , ZHAN Wen-Long . Radioactive Ion Beam Line of CSR. Chinese Physics C, 2001, 25(5): 443-447.
[10]	LIU Wei-Ping , BAI Xi-Xiang , WANG You-Bao , LI Zhi-Hong , LIAN Gang , LI Zhi-Chang , GUO Gang , JIANG Li-Yang , LU Shao-Jun , FU Chang-Bo , CHEN Yong-Shou . Study of Astrophysical Nuclear Reaction on Beijing Secondary Beam Line GIRAFFE. Chinese Physics C, 2000, 24(S1): 6-8.
[11]	Qi Zhong , Guo Zhongyan , Zhan Wenlong , Liu Guanhua , Zhou Jianqun , Zhang Wansheng , Wang Jinchuan , Lin Yuangen , Zhu Yongtai , Xu Hushan , Xie Yuanxiang . A Scintillant Multidetector for Measurement in Heavy Ion Reactions at Intermediate Energy. Chinese Physics C, 1997, 21(7): 577-582.
[12]	Liu Xin , Ye Yanlin , Jiang Dongxing , Lu Xiting , Liu Hongtao . Intrinsic Efficiency of A Φ76mm×100mm BGO Scintillation Detector. Chinese Physics C, 1994, 18(6): 496-502.
[13]	ZHANG Tian-Bao , WANG Shu-Ying , WANG Hai-Dong , SHEN Zhi-Qi , MENG Bo-Nian . Precise Measurement of Gamma Ray Energies With HPGE Spectrometer by Slithering Comparison Method. Chinese Physics C, 1993, 17(3): 202-207.
[14]	WANG Dai-Rong , LIANG Xue-Cai , DAI Yun-Sheng , CAO Jian-Hua . THE n-γ DISCRIMINATION OF A LONG CYLIN DRICAL LIQUID SCINTILLATOR DETECTOR. Chinese Physics C, 1989, 13(3): 241-244.
[15]	ZHU Yong-Sheng . THE MEASUREMENT OF GAS TIGHTNESS OF GAS DETECTOR WITH FLOW MODE. Chinese Physics C, 1989, 13(1): 1-4.
[16]	FENG Xi-Zhang , ZHAO Zhen-Lan , GUO Ying-Huan , LUO Shi-Hua , YANG Rui-Ying , HUANG Zhong-Xiang , JIANG Yong . MEASUREMENT OF NUMBER OF RADIOACTIVE ATOMS AND HALF-LIFE (Ⅳ)—Applications and Accuracy of N₀. Chinese Physics C, 1983, 7(1): 114-117.
[17]	ZHANG Gui-Shan , ZHANG Huan-Qiao . MONTE CARLO CALCULATION OF THE EFFICIENCIES OF THE LEAD GLASS DETECTORS FOR HIGH-ENERGY GAMMA RAYS. Chinese Physics C, 1983, 7(3): 370-378.
[18]	FENG XI-ZHANG , ZHAO ZHEN-LAN , GUO YING-HUAN , LO SHI-HUA , XU YUAN-BIAO , YANG RUI-YING , HUANG ZHONG-XIANG , JIANG YONG . MEASUREMENTS OF NUMBER OF RADIOACTIVE ATOMS AND HALF-LIFE(Ⅲ). Chinese Physics C, 1982, 6(5): 642-647.
[19]	FENG XI-ZHANG , ZHAO ZHEN-LAN , LO SHI-HUA , ZHANG JING-LIE , GUO YING-HUAN , XU YUAN-BIAO , YANG RUI-YING , HUANG ZHONG-XIANG , ZHANG YUAN-JI , SU ZHI-XIN , LI ZUO-QIAN , MA GUO-HUI . MEASUREMENTS OF NUMBER OF RADIOACTIVE ATOMS AND HALF-LIFE (Ⅰ). Chinese Physics C, 1981, 5(6): 754-760.
[20]	Feng Xi-zhang , Zhao Zhen-lan , Tang Nai-xun . SELECTION OF THE MEASURING TIME IN THE ABSOLUTE COUNTING OF RADIOACTIVITY. Chinese Physics C, 1980, 4(6): 771-773.

Access

Get Citation

WANG Qing-Bin, Kazuyoshi Masumoto, Hideo Hirayama and Tokushi Shibata. A Measurement of the Residual Radioactivity with NaI Survey Meter and Its MC Simulation[J]. Chinese Physics C, 2007, 31(11): 1071-1075.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2007-01-09
Revised: 2007-02-06

Article Metric

Article Views(3064)
PDF Downloads(722)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

A Measurement of the Residual Radioactivity with NaI Survey Meter and Its MC Simulation

Corresponding author: WANG Qing-Bin,

Institute of High Energy Physics, CAS, Beijing 100049, China2 Radiation Science Center, High Energy Accelerator Research Organization KEK, Japan

Received Date: 2007-01-09

Accepted Date: 2007-02-06

Available Online: 2007-11-05

Abstract: The present study shows how Monte Carlo method using EGS4 code can be useful for evaluating the residual radioactivity induced in shielding concrete of accelerator facilities. By using EGS4 code, the response of NaI survey meter concerning the shielding concrete block radius and thickness are calculated. It is found that the surface dose rate is saturated when the shielding concrete radius and thickness reach 40cm and 30cm respectively. Under the above-mentioned conditions, the surface dose rates at position north-8 and south-9 of SF cyclotron in University of Tokyo, are investigated, and compared with the experimental results obtained by NaI survey meter. It is shown that the calculation results are in good agreement with the experiments. In addition, the conversion factor of the surface dose rate to urface residual radioactivity is obtained to be 0.90(Bq·g^－1)·(μSv·h^－1)^－1 for ⁶⁰Co and 1.26(Bq·g^－1)·(μSv·h^－1)^－1 for ¹⁵²Eu. By using this conversion factor, we can easily evaluate the radioactivity induced in shielding concrete of accelerator facilities from the experimental results of NaI survey meter.

HTML

Reference (1)

A Measurement of the Residual Radioactivity with NaI Survey Meter and Its MC Simulation

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article