Author: Kitagawa, A.
Paper Title Page
WEWZO02 Precise Identification of Extracted Ion Beam Spectrum Initially Obtained in Synthesising Iron-Endohedral Fullerenes on ECRIS 114
 
  • I. Owada, S. Harisaki, Y. Kato, W. Kubo, T. Omori, K. Sato, K. Tsuda
    Osaka University, Graduate School of Engineering, Osaka, Japan
  • A. Kitagawa, M. Muramatsu
    QST-NIRS, Chiba, Japan
  • Y. Yoshida
    Toyo University, Kawagoe-shi, Saitama, Japan
  
  Electron cyclotron resonance ion source (ECRIS) plasma has been constructed for producing synthesized ion beams in Osaka Univ.[1,2] We hope that it can become a universal source capable of producing ions with wide range mass/charge ration (m/q). We have been trying to produce endohedral fullerenes in the ECRIS. We have conducted initial experiments on production of them only in the second stage of ECRIS. We have been using iron vapor source by induction heating (IH) from the mirror end along to the geometrical axis, and C60 crucible from the side wall, respectively. We succeeded in realizing ECR plasma that fullerene and iron ions coexist on the single stage ECRIS, even by 1kV extraction voltage.[3] By these experimental series, the typical CSD suggests that there is possibility of slight formation of iron fullerenes compounds and iron endohedral fullerenes. We are continuing to investigate the experimental conditions that maximize spectrum corresponding to iron endohedral fullerenes. In this paper we describe preliminary experimental results of synthesizing iron-endohedral fullerene on the ECRIS.
*Y. Kato, et al., RSI, 2014, 85, 02A950-1-3.
**Y. Kato, et al., RSI, 2016, 87, 02A710-1-4.
***Y. Kato, et.al., IIT2018, IEEE Conf. Publ., 2019, pp.172-175. 		 
slides icon Slides WEWZO02 [1.932 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEWZO02  
About • Received ※ 25 September 2020 — Revised ※ 14 October 2020 — Accepted ※ 03 November 2020 — Issue date ※ 12 January 2022
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WEYZO01 Present Status of HIMAC ECR Ion Sources 140
 
  • M. Muramatsu, A. Kitagawa
    QST-NIRS, Chiba, Japan
  • S. Hashizaki, T. Kondo, F. Ouchi, T. Sasano, T. Shiraishi, T. Suzuki, K. Takahashi
    AEC, Chiba, Japan
  • Y. Iwata
    NIRS, Chiba-shi, Japan
  • M. Kawashima
    Gunma University, Heavy-Ion Medical Research Center, Maebashi-Gunma, Japan
  • M. Sei
    R&K Company Limited., Shizuoka, Japan
  
  High-energy carbon-ion radiotherapy is being carried out at Heavy Ion Medical Accelerator in Chiba (HIMAC). Over 12000 cancer patients have been treated with carbon beams having energies of between 56-430 MeV/u since 1994. There are two injectors in the HIMAC for medical and experimental use. First injector consists of two ECR ion sources and one PIG ion source, the RFQ linac and the DTL. Usually, this injector suppling the carbon ion for cancer therapy and various ion such as H, He, Fe, Xe are accelerated for biological and physical experiment. The 10 GHz NIRS-ECR ion source produce the carbon ion for cancer therapy. The 18 GHz NIRS-HEC ion source produce He to Xe ions for experimental use. Second injector consists of the compact ECR ion source with all permanent magnet, the RFQ linac and the APF IH-DTL. This injector supplies the carbon ion for experimental use. Additionally, we tried production of the Indium and the Tin ions by using the In(C5H5) and the Sn(i-C3H7)4 at the NIRS-HEC. Beam current of the 115In20+ and 120Sn18+ were 90 and 15μA, respectively. Present status of ECR ion sources and some development will be described.  
slides icon Slides WEYZO01 [3.722 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEYZO01  
About • Received ※ 29 September 2020 — Revised ※ 01 October 2020 — Accepted ※ 15 October 2020 — Issue date ※ 16 October 2021
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