| Budget Amount *help |
¥43,680,000 (Direct Cost: ¥33,600,000、Indirect Cost: ¥10,080,000)
Fiscal Year 2019: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2018: ¥13,000,000 (Direct Cost: ¥10,000,000、Indirect Cost: ¥3,000,000)
Fiscal Year 2017: ¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Fiscal Year 2016: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
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| Outline of Final Research Achievements |
Rotating gantry is needed for carbon cancer therapy. HTS beam-bending magnets, which can generate high magnetic field (4 - 6 T) at relatively high operating temperature (around 20 K) with large temperature margin, enable compact and light-weight rotating gantry. However, we have to suppress the influence of large demagnetization of HTS tapes on the field qualities of magnets. We revealed the electromagnetic phenomena in HTS tapes in magnets through experimental and numerical approaches and clarified how to suppress the influence of magnetization on the field qualities of HTS magnets. We calculated the magnetic field generated by a designed beam-bending magnet, considering the demagnetization of HTS tapes. Based on the calculated magnetic field, we carried out beam-tracking simulation of a rotating gantry consisting of HTS magnets. It showed excellent beam-guiding performance.
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