サイクロトロンの超伝導化

抄録

The history of superconducting cyclotrons is reviewed. The first successful superconducting cyclotron was designed and constructed by Henry Blossor’s group from MSU, using circular superconducting coils. Later, the technology of superconducting coils was developed, and a separate sector ring cyclotron using non-circular coils was completed in RIKEN RI beam factory in 2006. In the above two cyclotrons, only the magnet was superconducting. But Tritron project in Germany aimed at making a completely superconducting cyclotron where acceleration cavities were also superconducting. Unfortunately, it has not yet been put to practical use. Superconducting cavity technology has been developed at present, and a fully superconducting cyclotron is not a dream.