Author: Suzuki, K.
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WEPB03 Acceleration Scheme of Radioactive Ion Beam with HIMAC and its Injector Linac 197
 
  • A. Noda, S. Hojo, K. Katagiri, M. Nakao, E. Noda, K. Noda, A. Sugiura, K. Suzuki, T. Wakui
    NIRS, Chiba-shi, Japan
  • M. Grieser
    MPI-K, Heidelberg, Germany
 
  For the purpose of simultaneous real-time observation of irradiation effects in the patients body during a heavy ion cancer treatment, the capability of acceleration of radioactive ion beam such as 11C has been investigated where an ISOL based ion source combined with a cyclotron was assumed. According to recent development of a single charged 11C ion source and its charge breeder*, it becomes to be important to estimate the intensities attainable by acceleration of such radioactive beam with the use of HIMAC and its injector quantitatively taking the beam dynamics into account. In the present paper, phase space matching of the secondary produced radioactive 11C ion beam is investigated among the ion source, injector linac and HIMAC synchrotron, referring to the ISOLDE system at CERN.
*: K. Katagiri et al., Contribution to this Sympojium.
 
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FRM1C02
Research and Developments Toward Radioactive C-11 Ion Acceleration  
 
  • K. Katagiri, T. Hattori, S. Hojo, M. Muramatsu, M. Nakao, A. Noda, K. Noda, K. Suzuki, T. Wakui
    NIRS, Chiba-shi, Japan
  • K. Nagatsu
    National Institute of Radiological Sciences, Inage, Chiba, Japan
 
  Funding: This study was partially supported by a JSPS KAKENHI Grant Number 25790090.
An isotope Separation On-Line (ISOL) system for radioactive C-11 ion beam acceleration is expected to be realized for a PET imaging simultaneously with the heavy-ion cancer therapy. In the ISOL scheme, C-11 molecules are firstly produced by irradiating boron compound target with proton beams (20 MeV, ~30 μA) provided by a small cyclotron. The C-11 molecules are separated from impurity molecules mixed into the target chamber during the proton irradiation. Then, 1+ ions are firstly produced from the purified C-11 molecules with the singly charged ion source. Finally, after the isotope separation with an analyzing magnet, the C+ ions are further ionized by employing an EBIS as a charge breeder to obtain required charge state for the HIMAC injector.* We have been developed a C-11 molecular production/separation system to produce the C-11 molecules and separate it from the impurities. We have also been developed a new singly charged ion source to produce the 1+ ions. Moreover, a test irradiation port is being constructed at NIRS cyclotron facility for on-line experiments to produce C-11 ions. Latest results on those developments and prospects of our ISOL scheme are to be presented.
*Akira Noda, et al., in these proceedings.
 
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