Author: Tongu, H.
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WEPWA025 RF Acceleration of Ions Produced by Short Pulse Laser 2548
 
  • Y. Fuwa, M. Hashida, Y. Iwashita, S. Sakabe, H. Tongu
    Kyoto ICR, Uji, Kyoto, Japan
  • M. Okamura
    BNL, Upton, Long Island, New York, USA
  • A. Yamazaki
    Nagoya University, Nagoya, Japan
  
  Funding: This work was supported by Grant-in-Aid for Exploratory Research Number 23654085.
RF acceleration of ions produced by short pulse laser is investigated. An RF cavity is prepared for the acceleration. Some experimental results will be presented. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPWA025  
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WEPMA053 Multipactor Simulations in 325 MHz Superconducting Spoke Cavity for an Electron Accelerator 2892
 
  • T. Kubo, T. Saeki
    KEK, Ibaraki, Japan
  • E. Cenni, Y. Iwashita, H. Tongu
    Kyoto ICR, Uji, Kyoto, Japan
  • R. Hajima, M. Sawamura
    JAEA, Ibaraki-ken, Japan
  
  Funding: The work is supported by Photon and Quantum Basic Research Coordinated Development Program from the Ministry of Education, Culture, Sports, Science and Technology, Japan.
In order to realize a compact industrial-use X-ray source with the laser-Compton scattering, a 325MHz superconducting spoke cavity for an electron accelerator operated at 4K is under development. After design-optimizations of the first cavity, we started fabrication process. In this paper, multipactor analyses carried out as parts of the design-optimization efforts are briefly summarized. Relations between cavity geometries and averaged secondary electron emission yield are discussed. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPMA053  
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WEPMA056 Development of Superconducting Spoke Cavities for Laser Compton Scattered X-ray Sources 2902
 
  • R. Hajima, M. Sawamura
    JAEA, Ibaraki-ken, Japan
  • E. Cenni, Y. Iwashita, H. Tongu
    Kyoto ICR, Uji, Kyoto, Japan
  • T. Kubo, T. Saeki
    KEK, Ibaraki, Japan
  
  Funding: This study is supported by Photon and Quantum Basic Research Coordinated Development Program of MEXT, Japan.
A 5-year research program on the development of superconducting spoke cavities for electron accelerators has been funded by MEXT, Japan since 2013. The purpose of our program is establishing design and fabrication processes of superconducting spoke cavity optimized for compact X-ray sources based on laser Compton scattering. The spoke cavity is expected to realize a compact industrial-use X-ray source with a reasonable cost and easy operation. We have chosen a cavity frequency at 325 MHz due to possible operation at 4 K and carried out cavity shape optimization in terms of electromagnetic and mechanical properties. Production of press-forming dies is also in progress. In this paper, we present overview and up-to-date status of the research program. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPMA056  
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