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Muramatsu, M.

Paper Title Page
WE204 IH-DTL as a Compact Injector for a Heavy-Ion Medical Synchrotron 715
 
  • Y. Iwata, T. Fujisawa, S. Hojo, N. Miyahara, T.M. Murakami, M. Muramatsu, H. Ogawa, Y. Sakamoto, S. Yamada, K. Yamamoto
    NIRS, Chiba-shi
  • T. Fujimoto, T. Takeuchi
    AEC, Chiba
  • T. Mitsumoto, H. Tsutsui, T. Ueda, T. Watanabe
    SHI, Tokyo
 
 

An interdigital H-mode structure drift tube linac (IH-DTL) with alternating phase focusing (APF) has been developed downstream of a 4-vane type RFQ linac at the National Institute of Radiological Sciences as a compact injector for a heavy-ion medical synchrotron. The rf frequency of both linacs is 200 MHz, and the total length of the two linacs is less than 6 m. They can accelerate heavy ions having a charge to mass ratio of 1/3 up to 4 MeV/u. The accelerated current of 12C4+ is as high as 380 electric μA, and beam transmission through the APF IH-DTL is better than 96%. This compact injector-linac scheme might give a possible solution for a compact cancer therapy facility with heavy-ion beams.

 

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