Keyword: radiation
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WEWZO05 Beam Profile Measurements of Decelerated Multicharged Xe Ions from ECRIS for Estimating Low Energy Damage on Satellites Components experiment, ECR, ECRIS, electron 125
 
  • K. Sato, S. Harisaki, Y. Kato, W. Kubo, K. Okumura, I. Owada, K. Tsuda
    Osaka University, Graduate School of Engineering, Osaka, Japan
  
  Electron cyclotron resonance ion source (ECRIS) has been constructed for producing synthesized ion beams in Osaka Univ.*,** Xe is used as fuel for ion propulsion engines on artificial satellites. There are problems of accumulated damages at irradiation and sputtering by low energy Xe ion from the engine. It is required to construct experimentally sputtering yield databases of ion beams in the low energy region from several hundred eV to 1keV, since there are not enough data of satellite component materials. Therefore, we are trying to investigate experimentally sputtering yield on materials by irradiating the low energy single species Xeq+ ion beams. However, there is a problem that if the low extraction voltage, the amount of beam currents is not enough to obtain ion beam flux for precise evaluation of sputtering yield data. Thus, we conduct to decelerate Xeq+ ion beams required low energy region after extracting at high voltage, e.g., 10kV. We measured the decelerated beam profile with x and y direction wire probes. As a result, we were able to estimate the dose of ion fluxes. We are going to conduct irradiation experiments on various materials.
*Y. Kato, et al., RSI, 2014, 85, 02A950-1-3.
**Y. Kato, et al., RSI, 2016, 87, 02A710-1-4. 		 
slides icon Slides WEWZO05 [8.964 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-WEWZO05  
About • Received ※ 27 September 2020 — Revised ※ 25 September 2020 — Accepted ※ 29 September 2020 — Issue date ※ 14 July 2022
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WEYZO01 Present Status of HIMAC ECR Ion Sources ion-source, ECR, operation, experiment 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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