Interferometer system for Keda Torus eXperiment using terahertz solid-state diode sources Wenzhe Mao, Jinlin Xie, Weixing Ding, Hong Li, Tao Lan, Adi Liu and Wandong Liu EPJ Web Conf., 149 (2017) 03019 Published online: 04 August 2017 DOI: 10.1051/epjconf/201714903019