New Q and V-band ECE radiometer for low magnetic field operation on LHD Tokihiko Tokuzawa, Yuki Goto, Daisuke Kuwahara, Masaki Nishiura and Takashi Shimizu EPJ Web Conf., 277 (2023) 03008 Published online: 23 February 2023 DOI: 10.1051/epjconf/202327703008