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Fujisawa, T.

Paper Title Page
MOLP09

 Magnet System for PET Cyclotron Based On Permanent Magnets 

  • E.Antokhin
    Budker Institute of Nuclear Physics, Novosibirsk, Russia
  • T.Fujisawa, M.Kumada, T.Matsumoto and S.Wakasa
    NIRS, Chiba, Japan

The number of positron emission tomography (PET) centers based on proton cyclotron is rapidly growing nowadays worldwide. It actually requests for simple, reliable and cheap proton cyclotron of energy 10-20 MeV to be designed for mass installations. Normally the magnet system for PET cyclotron is made with iron and copper coils. Although the some optimization of conventional "warm" magnet is possible, the another approach could be the magnet system based on permanent magnet, aiming the cost saving due to no needs of electric power during cyclotron life time. The permanent magnet system for 10 MeV PET cyclotron was designed, manufactured and measured. The present paper describes the cyclotron permanent magnet system as well as beam trajectory analysis in measured magnetic fields and RF system design.

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