ECRF stray radiation studies in preparation of the operations of JT-60SA Carlo Sozzi, Ken Kajiwara, Takayuki Kobayashi, Lorenzo Figini, Luca Garzotti, Alessandro Moro, Silvana Nowak and David Taylor EPJ Web Conf., 277 (2023) 01008 Published online: 23 February 2023 DOI: 10.1051/epjconf/202327701008