Superconducting ECR ion source: From 24-28 GHz SECRAL to 45 GHz fourth generation ECR
文献类型：会议论文
| 作者 | Wu, W.2; Sun, L. T.2 ; Guo, J. W.2; Zhang, W. H.2; Xie, D. Z.1; Ravaioli, E.1; Hafalia, A.1; Juchno, M.1; Sabbi, G.1; Wu, B. M.2
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| 出版日期 | 2018-05 |
| 卷号 | 89 |
| 期号 | 5 |
| DOI | 10.1063/1.5017479 |
| 英文摘要 | The development of superconducting ECR source with higher magnetic fields and higher microwave frequency is the most straight forward path to achieve higher beam intensity and higher charge state performance. SECRAL, a superconducting third generation ECR ion source, is designed for 24-28 GHz microwave frequency operation with an innovative magnet configuration of sextupole coils located outside the three solenoids. SECRAL at 24 GHz has already produced a number of record beam intensities, such as Ar-40(12+) 1.4 emA, Xe-129(26+) 1.1 emA, Xe-129(30+) 0.36 emA, and Bi-209(31+) 0.68 emA. SECRAL-II, an upgraded version of SECRAL, was built successfully in less than 3 years and has recently been commissioned at full power of a 28 GHz gyrotron and three-frequency heating (28 + 45 + 18 GHz). New record beam intensities for highly charged ion production have been achieved, such as 620 e mu A Ar-40(16+), 15 e mu A Ar-40(18+), 146 e mu A Kr-86(28+), 0.5 e mu A Kr-86(33+), 53 e mu A Xe-129(38+), and 17 e mu A (XeD+)-Xe-129-D-42. Recent beam test results at SECRAL and SECRAL II have demonstrated that the production of more intense highly charged heavy ion beams needs higher microwave power and higher frequency, as the scaling law predicted. A 45 GHz superconducting ECR ion source FECR (a first fourth generation ECR ion source) is being built at IMP. FECR will be the world's first Nb3Sn superconducting-magnet-based ECR ion source with 6.5 T axial mirror field, 3.5 T sextupole field on the plasma chamber inner wall, and 20 kW at a 45 GHz microwave coupling system. This paper will focus on SECRAL performance studies at 24-28 GHz and technical design of 45 GHz FECR, which demonstrates a technical path for highly charged ion beam production from 24 to 28 GHz SECRAL to 45 GHz FECR. Published by AIP Publishing. |
| 会议录 | REVIEW OF SCIENTIFIC INSTRUMENTS
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| 会议录出版者 | AMER INST PHYSICS |
| 会议录出版地 | 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA |
| 语种 | 英语 |
| 资助项目 | 973 Program of China[2014CB845500] |
| WOS研究方向 | Instruments & Instrumentation ; Physics |
| WOS记录号 | WOS:000433962700008 |
| 源URL | [http://119.78.100.186/handle/113462/58573]  |
| 专题 | 近代物理研究所_兰州重离子研究装置 |
| 通讯作者 | Zhao, H. W. |
| 作者单位 | 1.Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA 2.Chinese Acad Sci, IMP, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, W.,Sun, L. T.,Guo, J. W.,et al. Superconducting ECR ion source: From 24-28 GHz SECRAL to 45 GHz fourth generation ECR[C]. 见:. |
入库方式： OAI收割
来源：近代物理研究所
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