Collection efficiency of a monitor parallel plate ionization chamber for pencil beam scanning proton therapy
文献类型：期刊论文
| 作者 | Han, RC; Li, YJ; Pu, YH |
| 刊名 | NUCLEAR SCIENCE AND TECHNIQUES
 |
| 出版日期 | 2020 |
| 卷号 | 31期号:2页码:- |
| 关键词 | ION RECOMBINATION CORRECTION REFERENCE DOSIMETRY SYSTEM |
| ISSN号 | 1001-8042 |
| DOI | 10.1007/s41365-020-0722-z |
| 文献子类 | 期刊论文 |
| 英文摘要 | The collection efficiency of monitor parallel plate ionization chambers is the main uncertainty in the beam control of pencil beam scanning systems. Existing calculation methods for collection efficiency in photon or passive scattering proton systems have not considered the characteristics of non-uniform charge density in pencil beam scanning systems. In this study, Boag's theory was applied to a proton pencil beam scanning system. The transverse distribution of charge density in the ionization chamber was considered to be a Gaussian function and an analytical solution was derived to calculate collection efficiency in the beam spot area. This calculation method is called the integral method and it was used to investigate the effects of beam parameters on collection efficiency. It was determined that collection efficiency is positively correlated with applied voltage, beam size, and beam energy, but negatively correlated with beam current intensity. Additionally, it was confirmed that collection efficiency is improved when the air filling the monitor parallel plate ionization chamber is replaced with nitrogen. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32749]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 3.Shanghai APACTRON Particle Equipment Co Ltd, Shanghai 201800, Peoples R China 4.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, RC,Li, YJ,Pu, YH. Collection efficiency of a monitor parallel plate ionization chamber for pencil beam scanning proton therapy[J]. NUCLEAR SCIENCE AND TECHNIQUES,2020,31(2):-. |
| APA | Han, RC,Li, YJ,&Pu, YH.(2020).Collection efficiency of a monitor parallel plate ionization chamber for pencil beam scanning proton therapy.NUCLEAR SCIENCE AND TECHNIQUES,31(2),-. |
| MLA | Han, RC,et al."Collection efficiency of a monitor parallel plate ionization chamber for pencil beam scanning proton therapy".NUCLEAR SCIENCE AND TECHNIQUES 31.2(2020):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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