An accurate low current measurement circuit for heavy iron beam current monitor
文献类型：期刊论文
| 作者 | Zhou, Chao-Yang1,2; Su, Hong1 ; Mao, Rui-Shi1; Dong, Cheng-Fu1; Qian, Yi1; Kong, Jie1
|
| 刊名 | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
 |
| 出版日期 | 2012-06-01 |
| 卷号 | 280页码:84-87 |
| 关键词 | Faraday Cup Low Beam Current Monitor Picoammeter Gated Integrator |
| ISSN号 | 0168-583X |
| DOI | 10.1016/j.nimb.2012.01.033 |
| 文献子类 | Article |
| 英文摘要 | Heavy-ion beams at 10(6) particles per second have been applied to the treatment of deep-seated inoperable tumors in the therapy terminal of the Heavy Ion Research Facility in Lanzhou (HIRFL) which is located at the Institute of Modern Physics, Chinese Academy of Sciences (IMP, CAS). An accurate low current measurement circuit following a Faraday cup was developed to monitor the beam current at pA range. The circuit consisted of a picoammeter with a bandwidth of 1 kHz and a gated integrator (GI). A low input bias current precision amplifier and new guarding and shielding techniques were used in the picoammeter circuit which allowed as to measure current less than 1 pA with a current gain of 0.22 V/pA and noise less than 10 fA. This paper will also describe a novel compensation approach which reduced the charge injection from switches in the GI to 10(-18) C, and a T-switch configuration which was used to eliminate leakage current in the reset switch. (C) 2012 Elsevier B.V. All rights reserved. |
| 资助项目 | CAS[KJCX2-YW-N27] |
| WOS研究方向 | Instruments & Instrumentation ; Nuclear Science & Technology ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000304336200012 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.186/handle/113462/48889]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Su, Hong |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Chao-Yang,Su, Hong,Mao, Rui-Shi,et al. An accurate low current measurement circuit for heavy iron beam current monitor[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2012,280:84-87. |
| APA | Zhou, Chao-Yang,Su, Hong,Mao, Rui-Shi,Dong, Cheng-Fu,Qian, Yi,&Kong, Jie.(2012).An accurate low current measurement circuit for heavy iron beam current monitor.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,280,84-87. |
| MLA | Zhou, Chao-Yang,et al."An accurate low current measurement circuit for heavy iron beam current monitor".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 280(2012):84-87. |
入库方式： OAI收割
来源：近代物理研究所
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