Figures for Ion cyclotron emission diagnostic system on the experimental advanced superconducting tokamak and first detection of energetic-particle-driven radiation

A passive and noninvasive diagnostic system based on high-frequency B-dot probes (HFBs) has been designed and developed for the measurement and identification of ion cyclotron emission (ICE) in the Experimental Advanced Superconducting Tokamak (EAST). Figures for ICE signals corresponding to the fundamental cyclotron frequency of hydrogen ions and harmonics of deuterium ions were observed in experiments where deuterium plasmas were heated with deuterium-neutral beams had been updated. The field dependence of ICE has been verified by recent experiments with three different background magnetic fields. The figures record: 1. the relationship between ICE frequency and background magnetic field; 2. the spectrum of ICE during NBI operation;3. the edge and core ICE detected in EAST tokamak.