Use of combined sputter ion and NEG pumps in the heavy ion medical machine
文献类型：期刊论文
| 作者 | Caruso, Luciano3; Meng, Jun1 ; Luo, Cheng1; Chai, Zhen1; Hu, Zhenjun1; Ma, Xiangli1; Xie, Wenjun1; Yang, Weishun1; Zhang, Xiping1; Siviero, Fabrizio3
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| 刊名 | VACUUM
 |
| 出版日期 | 2015-04-01 |
| 卷号 | 114页码:108-113 |
| 关键词 | Heavy Ion Accelerator Sputter Ion Pump Neg Pump |
| ISSN号 | 0042-207X |
| DOI | 10.1016/j.vacuum.2015.01.011 |
| 文献子类 | Article |
| 英文摘要 | The Heavy Ion Medical Machine (HIMM) is the first medical accelerator being built in China using heavy ion beams for cancer therapy. The accelerator complex, developed by IMP (the Institute of Modern Physics, Chinese Academy of Sciences), has several innovative features, including the use of a synchrotron ring as the main ion accelerator. To guarantee a sufficient storage lifetime of the heavy ions, the average pressure for the entire synchrotron ring must be lower than 5 x 10(-7) Pa. This has been achieved integrating a sputter ion and a NEG pump in a suitably designed combination pump. The compact size of the combination pump (CP) allows its easy mounting in spite of the severe space limitations of the machine. The overall CP pumping speed exceeds 1000 l/s (H-2), a factor 2 larger than a standard ion pump of comparable size. This feature allows achieving lower ultimate pressure in shorter time, this being beneficial to increase the beam time for patient treatment at HIMM. The CP was also tested under very high gas loads to assess its usability at higher pressure (10(-5)-10(-6) Pa). Preliminary data indicate that long term stable pumping performances of the CP can be achieved also under these more demanding conditions. The result is of more general interest for compact accelerators operating in this pressure range and requiring very compact pump design solutions. (C) 2015 Elsevier Ltd. All rights reserved. |
| WOS关键词 | NONEVAPORABLE GETTER |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000351247700019 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.186/handle/113462/47913]  |
| 专题 | 近代物理研究所_真空技术室 |
| 通讯作者 | Siviero, Fabrizio |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Milan, Dipartimento Fis, I-20133 Milan, Italy 3.SAES Getters SpA, I-20020 Lainate, Italy |
| 推荐引用方式 GB/T 7714 | Caruso, Luciano,Meng, Jun,Luo, Cheng,et al. Use of combined sputter ion and NEG pumps in the heavy ion medical machine[J]. VACUUM,2015,114:108-113. |
| APA | Caruso, Luciano.,Meng, Jun.,Luo, Cheng.,Chai, Zhen.,Hu, Zhenjun.,...&Maccallini, Enrico.(2015).Use of combined sputter ion and NEG pumps in the heavy ion medical machine.VACUUM,114,108-113. |
| MLA | Caruso, Luciano,et al."Use of combined sputter ion and NEG pumps in the heavy ion medical machine".VACUUM 114(2015):108-113. |
入库方式： OAI收割
来源：近代物理研究所
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