Development of shutdown dose rate calculation code based on cosRMC and application to benchmark analysis

doi:10.1016/j.fusengdes.2021.112846

	Development of shutdown dose rate calculation code based on cosRMC and application to benchmark analysis
	Zhang, Xian 2; Liu, Shichang 2; Lu, Peng 1; Zhang, Xiaokang 1; Zheng, Yu 1; Chen, Yixue 2; Liu, Songlin 1
刊名	FUSION ENGINEERING AND DESIGN
	2021-12-01
卷号	173
关键词	Shutdown dose rate R2S method Monte Carlo cosRMC ALARA
ISSN号	0920-3796
DOI	10.1016/j.fusengdes.2021.112846
通讯作者	Liu, Shichang()
英文摘要	Accurate estimation of shutdown dose rate (SDR) has important reference significance for the design, operation and maintenance of fusion devices. In order to obtain the decay gamma source distribution with higher spatial resolution, a shutdown dose rate calculation code was developed based on the Rigorous two-step (R2S) method. The Monte Carlo code cosRMC and the radioactivity inventory code ALARA were coupled to calculate SDR in complex geometry based on mesh-tally. The ray tracking method was used to obtain the voxel-averaged nuclide density, and a decay photon sampling module was developed to accurately describe the distribution of the activation source. In order to improve the computational efficiency in deep penetration problems, the global variance reduction technique based on iterative weight window was adopted. The developed code was firstly verified with rectangular parallelepiped model consists of steel and water, in which the effect of bremsstrahlung photon was also discussed. Then the code was applied to the calculation and analysis of the ITER port plug benchmark, by comparing with other SDR calculation codes. The influence of different activation libraries on the decay gamma spectra and the effect of mesh resolution on the calculation accuracy were investigated. The results showed that the SDR function in cosRMC code is able to calculate SDR accurately with high spatial resolution for deep penetration problems.
资助项目	National Magnetic Confinement Fusion Program of China[2019YFE03110000] ; National Magnetic Confinement Fusion Program of China[2019YFE03110003] ; National Natural Science Foundation of China[11905060] ; Beijing Municipal Natural Science Foundation[1204036] ; Fundamental Research Funds for the Central Universities[2019MS037] ; Young Elite Scientists Sponsorship Program of China Association for Science and Technology[2020QNRC001]
WOS关键词	VERIFICATION ; VALIDATION ; MESH
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000709527000001
资助机构	National Magnetic Confinement Fusion Program of China ; National Natural Science Foundation of China ; Beijing Municipal Natural Science Foundation ; Fundamental Research Funds for the Central Universities ; Young Elite Scientists Sponsorship Program of China Association for Science and Technology
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/125735]
专题	中国科学院合肥物质科学研究院
通讯作者	Liu, Shichang
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.North China Elect Power Univ, Sch Nucl Sci & Engn, Beijing 102206, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xian,Liu, Shichang,Lu, Peng,et al. Development of shutdown dose rate calculation code based on cosRMC and application to benchmark analysis[J]. FUSION ENGINEERING AND DESIGN,2021,173.
APA	Zhang, Xian.,Liu, Shichang.,Lu, Peng.,Zhang, Xiaokang.,Zheng, Yu.,...&Liu, Songlin.(2021).Development of shutdown dose rate calculation code based on cosRMC and application to benchmark analysis.FUSION ENGINEERING AND DESIGN,173.
MLA	Zhang, Xian,et al."Development of shutdown dose rate calculation code based on cosRMC and application to benchmark analysis".FUSION ENGINEERING AND DESIGN 173(2021).