Fast impedance matching for the ion cyctron resonance heating system based on capacitors at the EAST tokamakYaoyao Guo, Lunan Liu, Xinjun Zhang, Chengming Qin, Wei Zhang and Qingqing ChenEPJ Web Conf., 346 (2026) 03013DOI: https://doi.org/10.1051/epjconf/202634603013