A   B   C   D   E   F   G   H   I   K   L   M   O   P   Q   R   S   T   U   V   W    


Paper Title Other Keywords Page
TPPT016 Development of Co-Based Amorphous Core for Untuned Broadband RF Cavity impedance, acceleration, radiation 1511
  • T. Misu, M. Kanazawa, A. Sugiura, S. Yamada
    NIRS, Chiba-shi
  • K. Katsuki, K. S. Sato
    Toshiba, Yokohama
  We have developed a co-based amorphous core as a new magnetic-alloy (MA) core for the loaded RF cavity. Because of its permeability found to be approximately twice as high as that of FINEMET, this MA core is an excellent candidate for constructing a compact broadband RF cavity with less power consumption. In this report, we present our recent studies of the co-based amorphous core’s physical properties, performance, and development.  
RPAP007 Alternating-Phase-Focused Linac with Interdigital H-Mode Structure for Medical Injectors rfq, linac, electromagnetic-fields, injection 1084
  • Y. Iwata, T. Fujisawa, T. Furukawa, S. H. Hojo, T. Honma, M. Kanazawa, N. M. Miyahara, T. Murakami, M. Muramatsu, K. Noda, H. Ogawa, M. Torikoshi, S. Yamada, K. Yamamoto
    NIRS, Chiba-shi
  • Y.F. Fujii, T. Mitsumoto, H. Tsutsui
    SHI, Tokyo
  • T. Fujimoto, H.O. Ogawa
    AEC, Chiba
  • V.V. Kapin
    MEPhI, Moscow
  Tumor therapy using Heavy Ion Medical Accelerator in Chiba (HIMAC) has been performed at National Institute of Radiological Sciences (NIRS). With the successful clinical results over ten years, a project on developing compact accelerators has been started. To design these compact accelerators, a size of an injector as well as construction and operation costs plays an important role. To satisfy these requirements, we propose a compact injector consisting of a RFQ and Interdigital H-mode Drift-Tube-Linac (IH-DTL) having the resonant frequency of 200 MHz. The injector will accelerate carbon ion up to 4.0 AMeV. For the beam focusing of the IH-DTL, the method of Alternating-Phase-Focusing was employed. With the IH structure and rather high operating-frequency, the size of the cavities is compact; the radius is approximately 0.4 m, and the length of the RFQ and IH-DTL will be 2.5m and 3.5m respectively. The fabrication of the RFQ is in progress. For the IH-DTL, the full-scale model was fabricated. With the encouraging results of the electric field measurements, we are developing the final design of the IH-DTL. The fabrication of the entire injector will be completed at the end of 2005. The present status of our project will be shown.