Energy deposition and neutron flux study in a gravity-driven dense granular target (DGT) with GEANT4 toolkit

doi:10.1016/j.nimb.2018.04.045

	Energy deposition and neutron flux study in a gravity-driven dense granular target (DGT) with GEANT4 toolkit
	Zhao, Qiang1 ; Cui, Wenjuan 1,2; He, Zhiyong 1; Zhang, Xueying1 ; Ma, Wenjing 1
刊名	NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
	2018-07-15
卷号	427 页码:63-69
关键词	China initiative Accelerator Driven System (CiADS) Gravity-driven dense granular target (DGT) Energy deposition Neutron flux
ISSN号	0168-583X
DOI	10.1016/j.nimb.2018.04.045
英文摘要	China initiative Accelerator Driven System (CiADS) has been approved as a strategic plan to build an ADS demonstration facility in the next few years. It proposed a new concept for a high-power spallation target: the gravity-driven dense granular target (DGT). As the same with a monolithic target (MT), both solid and liquid target, energy deposition and neutron flux are two critical issues. In this paper, we focus on these two issues and long for some valuable results for the project. Unlike a solid target, the internal geometry structure of a DGT is very complicated. To be as much as closer with the reality, we designed an algorithm and firstly packed the grains randomly in a cylindrical container in GEANT4 software. The packing result was in great agreement with the experimentally measured results. It shows that the algorithm is practicable. In the next step, all the simulations about energy deposition and neutron flux of a DGT were performed with the GEANT4 codes, and the results were compared with the data of a MT. Compared to a MT, a DGT has inarguable advantages in both terms of energy deposition and neutron flux. In addition, the simulations with different radius of grains were also performed. Finally, we found that both the energy deposition and neutron flux are nearly irrelevant to the radius of the grains in the range of 0.5 mm-5 mm when the packing density is same by analyzing the results meticulously.
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDA03010000] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA03030000] ; National Natural Science Foundation of China[91426301]
WOS研究方向	Instruments & Instrumentation ; Nuclear Science & Technology ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000440619100012
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/59131]
专题	近代物理研究所_实验物理中心
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Qiang,Cui, Wenjuan,He, Zhiyong,et al. Energy deposition and neutron flux study in a gravity-driven dense granular target (DGT) with GEANT4 toolkit[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2018,427:63-69.
APA	Zhao, Qiang,Cui, Wenjuan,He, Zhiyong,Zhang, Xueying,&Ma, Wenjing.(2018).Energy deposition and neutron flux study in a gravity-driven dense granular target (DGT) with GEANT4 toolkit.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,427,63-69.
MLA	Zhao, Qiang,et al."Energy deposition and neutron flux study in a gravity-driven dense granular target (DGT) with GEANT4 toolkit".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 427(2018):63-69.