THPH028  電磁石と電源  8月1日 百周年時計台記念館 国際交流ホール 13:30-15:30
Development progress of the 4th generation of switching power supply for circular induction accelerators
○岡村 勝也(高エネルギー加速器研究機構),Liu Yi(Institute of Fluid Physics, CAEP),高山 健(高エネルギー加速器研究機構),徳地 明(株式会社パルスパワー技術研究所)
○Katsuya Okamura (High Energy Accelerator Research Organization), Yi Liu (Institute of Fluid Physics, CAEP), Ken Takayama (High Energy Accelerator Research Organization), Akira Tokuchi (Pulsed Power Japan Laboratory Ltd.)
A novel synchrotron called an induction synchrotron (IS) was developed at KEK in 2006*. In the IS, charged particles are accelerated and confined by bipolar high-voltage pulses generated by switching power supply (SPS), which is one of the key technologies for IS. In this work, the 4th generation of SPS, based on full-bridge circuit with 3.3 kV high-speed MOSFET is developed. Compared with previous prototype**, the heat dissipation performance at high frequency is improved through simulation and experiment analyzation. The structure is redesigned for better waveforms by reducing the influences of parasitic inductance and capacitance. * K. Takayama et al., Phys. Rev. Lett., 98, no.5, pp.054801(1)-054801(4) (2007). ** K. Okamura et al., Proceedings of the 14th Annual Meeting of Particle Accelerator Society of Japan, pp. 476-480 (2017).