Detection of tokamak plasma positrons using annihilation photons

doi:10.1016/j.fusengdes.2017.03.144

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	Detection of tokamak plasma positrons using annihilation photons
	Yu, Guanying 1; Liu, Jian 1; Xie, Jinlin 1; Li, Jiangang 2
刊名	FUSION ENGINEERING AND DESIGN
	2017-05-01
卷号	118 页码:124-128
关键词	Plasma Positron Material Positron Fusion Runaway Electron Annihilation Photons
DOI	10.1016/j.fusengdes.2017.03.144
文献子类	Article
英文摘要	A massive amount of positrons (plasma positrons), produced by the collision between runaway electrons and nuclei during fusion plasma disruption, was first predicted theoretically in 2003. To help confirm this prediction, we report here the design of an experimental system to detect tokamak plasma positrons. Because a substantial amount of positrons (material positrons) are produced when runaway electrons impact plasma-facing materials, we proposed maximizing the ratio of plasma to material positrons by inserting a thin carbon target at the plasma edge as a plasma positron bombing target and producing a plasma disruption scenario triggered by massive gas injection. Meanwhile, the coincidence detection of positron annihilation photons was used to filter out the noise of annihilation photons from locations other than the carbon target and that of bremsstrahlung photons near 511 key. According to our simulation, the overall signal-to-noise ratio should be more than 10:1. (C) 2017 Elsevier B.V. All rights reserved.
WOS关键词	PET
WOS研究方向	Nuclear Science & Technology
语种	英语
WOS记录号	WOS:000400226900017
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/33479]
专题	合肥物质科学研究院_中科院等离子体物理研究所
作者单位	1.Univ Sci & Technol, Hefei 230027, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Yu, Guanying,Liu, Jian,Xie, Jinlin,et al. Detection of tokamak plasma positrons using annihilation photons[J]. FUSION ENGINEERING AND DESIGN,2017,118:124-128.
APA	Yu, Guanying,Liu, Jian,Xie, Jinlin,&Li, Jiangang.(2017).Detection of tokamak plasma positrons using annihilation photons.FUSION ENGINEERING AND DESIGN,118,124-128.
MLA	Yu, Guanying,et al."Detection of tokamak plasma positrons using annihilation photons".FUSION ENGINEERING AND DESIGN 118(2017):124-128.