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| MOPO005 |
Impedance Characteristic Analysis and Matching Network Design for a 100 mA H− Ion Source |
network, ion-source, impedance, ISOL |
58 |
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- A.X. Ding, H.R. Cai, X.L. Jia, P.Z. Li, Z.J. Nong, G.F. Pan, J.F. Wang, H. Zhang, T.J. Zhang, X. Zheng
CIAE, Beijing, People’s Republic of China
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China Institute of Atomic Energy (CIAE) has developed a series of multi-cusp H− ion sources (IS) with DC beam intensity ranging from 3 to 18 mA for high intensity proton cyclotron uses such as cyclotron PET application, neutron source and boron neutron capture therapy (BNCT) facilities. Based on the previous experiences, a new project of radio frequency (RF) antenna driving ion source has been launched for pulse accelerator research. This new ion source is expected to provide over 100 mA peak intensity H− beams of 60 keV and a longer maintenance interval than conventional filament-driving ion sources above. Impedance matching is indispensable for efficient RF power coupling in the whole working process of the ion source for high-intensity H− beam extraction. In this paper, impedance characteristic of the IS antenna with various plasma loading is analyzed. Eight typical matching topologies are discussed on their electrical requirements. A type-L and a type-γ network are finally selected for the 2 MHz and 13.56 MHz chains respectively. This design may provide a better compromise between the matching performance and the cost of implementation for a wide dynamic loading range. Design of the network is evaluated on the power delivering efficiency in each of the two RF chains and isolation between one and the other. The IS structure and near-future work plan are also presented.
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Poster MOPO005 [1.228 MB]
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| DOI • |
reference for this paper
※ doi:10.18429/JACoW-CYCLOTRONS2022-MOPO005
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| About • |
Received ※ 24 December 2022 — Revised ※ 11 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 25 April 2023 |
| Cite • |
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| MOPO006 |
Development of High Temperature Superconducting ECR Ion Source Using REBCO Coils |
ECR, operation, solenoid, sextupole |
62 |
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- T.H. Chong, M. Fukuda, T. Hara, H. Kanda, M. Kittaka, S. Matsui, K. Takeda, Y. Yasuda, T. Yorita, H. Zhao
RCNP, Osaka, Japan
- S. Fukui
Niigata University, Niigata, Japan
- T. Hirayama, Y. Matsubara, Y. Mikami, T. Takahashi, J. Yoshida
SHI, Kanagawa, Japan
- A. Ishiyama
Waseda University, Tokyo, Japan
- S. Noguchi
Hokkaido University, Sapporo, Japan
- H. Ueda
Okayama University, Okayama, Japan
- T. Watabe
Chuba, Aichi, Japan
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A high temperature superconducting ECR ion source (HTS-ECR) using REBCO coils is under development in Research Center for Nuclear Physics(RCNP), Osaka University. REBCO tapes are the second-generation high temperature superconductor, which maintains a high critical current even being placed in a strong external magnetic field. Using this REBCO coils as electromagnets, the HTS-ECR was designed to operate at microwave frequencies of 2.45 GHz and 10 GHz, for the purpose of producing high intensity proton, deuteron and helium beams. In this work, the low-temperature performance test results of the REBCO coils will be presented. The coil system and plasma chamber designed for the HTS-ECR will also be discussed. Results yielded in this research will also be made the best use of the development of a skeleton cyclotron, a compact air-core cyclotron which is under development in RCNP, Osaka University.
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Poster MOPO006 [3.590 MB]
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| DOI • |
reference for this paper
※ doi:10.18429/JACoW-CYCLOTRONS2022-MOPO006
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| About • |
Received ※ 21 December 2022 — Revised ※ 11 January 2023 — Accepted ※ 01 February 2023 — Issue date ※ 26 May 2023 |
| Cite • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
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