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	Calculation of the beam loss in the 270 degrees bending magnet system of the medical accelerator
	Li Quan-Feng ; Kong Chao-Cheng ; Guo Bing-Qi ; Xing Qing-Zi
	2010-05-10 ; 2010-05-10
关键词	270 degrees bending magnet system beam transportation electron loss Monte Carlo sampling method tracing of the movement Physics, Nuclear Physics, Particles & Fields
中文摘要	The transportation process of the electron beam in the 270 degrees bending magnet system of the medical accelerator is studied under the one-order approximation, and the influence of the initial condition to the beam transportation and loss is analyzed for the calculation of the radiation dose. The theory of the beam transportation, combined with the Monte Carlo sampling method is applied. The simulation result shows that the energy spread is the main factor resulted in the beam loss. The data on the position, energy and direction of the lost electrons obtained through the simulation can be supplied as input to deal with the radiation problem. The result gives that the loss rate of the electron beam is 13.5%, and the direction of the main loss is toward the upside! of the irradiating head of the accelerator with the radius 1mm, angle spread 5mrad, and energy spread 10% of the initial beam.
语种	中文 ; 中文
出版者	SCIENCE CHINA PRESS ; BEIJING ; 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/22108]
专题	清华大学
推荐引用方式 GB/T 7714	Li Quan-Feng,Kong Chao-Cheng,Guo Bing-Qi,et al. Calculation of the beam loss in the 270 degrees bending magnet system of the medical accelerator[J],2010, 2010.
APA	Li Quan-Feng,Kong Chao-Cheng,Guo Bing-Qi,&Xing Qing-Zi.(2010).Calculation of the beam loss in the 270 degrees bending magnet system of the medical accelerator..
MLA	Li Quan-Feng,et al."Calculation of the beam loss in the 270 degrees bending magnet system of the medical accelerator".(2010).

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