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Muramatsu, M.

 
Paper Title Page
WEPCH169 Alternating Phase Focused IH-DTL for Heavy-ion Medical Accelerators 2328
 
  • Y. Iwata, T. Fujisawa, T. Furukawa, S. H. Hojo, M. Kanazawa, N. M. Miyahara, T. Murakami, M. Muramatsu, K. Noda, H. Ogawa, Y. S. Sakamoto, S. Yamada, K. Yamamoto
    NIRS, Chiba-shi
  • T. Fujimoto, T. Takeuchi
    AEC, Chiba
  • T. Mitsumoto, H. Tsutsui, T. Ueda, T. Watanabe
    SHI, Tokyo
 
  Tumor therapy using HIMAC has been performed at NIRS since June 1994. With the successful clinical results over more than ten years, a number of projects to construct these complexes have been proposed over the world. Since existing heavy-ion linacs are large in size, the development of compact linacs would play a key role in designing compact and cost-effective complexes. Therefore, we developed an injector system consisting of RFQ and Interdigital H-mode (IH) DTL having the frequency of 200 MHz. The injector system can accelerate carbon ions up to 4.0 AMeV. For the beam focusing of IH-DTL, the method of Alternating Phase Focusing (APF) was employed. With the IH structure and rather high frequency, the cavity size is compact; the radius is 0.4 m, and lengths of RFQ and IH-DTL are 2.5m and 3.5m respectively. The fabrication of RFQ was completed, and we succeeded to accelerate carbon ions with satisfactory performances. For IH-DTL, the full-scale model was first fabricated. With the encouraging result* of its electric field measurement, we constructed IH-DTL and beam acceleration tests will be performed in March 2006. We will present the performances of the entire injector system.

*Y. Iwata et al., Nucl Instr. & Meth in Phys. Res. A (submitted).

 
TUOAFI01 Development for New Carbon Cancer-therapy Facility and Future Plan of HIMAC 955
 
  • K. Noda, T. Fujisawa, T. Furukawa, Y. Iwata, T. Kanai, M. Kanazawa, N. Kanematsu, A. Kitagawa, Y. Kobayashi, M. Komori, S. Minohara, T. Murakami, M. Muramatsu, S. Sato, E. Takada, M. Torikoshi, S. Yamada, K. Yoshida
    NIRS, Chiba-shi
  • C. Kobayashi, S. Shibuya, O. Takahashi, H. Tsubuku
    AEC, Chiba
  • Y. Sato, M. Tashiro, K. Yusa
    Gunma University, Heavy-Ion Medical Research Center, Maebashi-Gunma
 
  The first clinical trial with carbon beams generated from the HIMAC was conducted in June 1994. The total number of patients treated is now in excess of 2500 as of December 2005. Based on our 10 years of experience with the HIMAC, we have proposed a new carbon-ion therapy facility for widespread use in Japan. The key technologies of the accelerator and irradiation systems for the new facility have been developed since April 2004. The new carbon-therapy facility will be constructed at Gunma University from April 2006. As our future plan for the HIMAC, further, a new treatment facility will be constructed at NIRS from April 2006. The design work has already been initiated and will lead to the further development of the therapy with the HIMAC. The facility is connected with the HIMAC accelerator complex and has two treatment rooms with horizontal and a vertical beam-delivery systems and one room with a rotating gantry. We will report the development for new carbon therapy facility and the design study for new treatment facility with the HIMAC.  
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