We report the first observation of chirping instabilities driven by runaway electrons (REs) in a
tokamak. The instabilities are accessed during the post-disruption RE beam stage in a low …

A toroidal Alfvén eigenmode (TAE) excited by barely trapped energetic electrons during the
application of a static magnetic perturbations (MPs) is observed for the first time in tokamak …

Toroidal Alfvén eigenmodes (TAEs) associated with runaway electrons are observed in low
density EAST Ohmic discharges (Zhu et al 2022 Phys. Plasmas 29 062504), which motivate …

A series of high-frequency (400~ 1000 kHz) bursting core-localized Alfvén instabilities have
been observed during ohmic discharges in EAST tokamak. The instability trigger favours the …

A possible triggering mechanism of Alfvén waves (AWs) in tokamak plasmas, based on
localized perturbations induced by magnetic reconnection events, is discussed in the …

Operation in the quiescent regime with abundant trapped energetic electrons (EEs) has
been achieved during the current flattop in EAST low-density Ohmic plasmas. This was …

An ion cyclotron emission (ICE) diagnostic based on a magnetic probe has been designed
and installed on the J-TEXT tokamak. This ICE diagnostic is used to study the high …

Alfvén eigenmodes (AEs) and energetic particle modes (EPMs) have been observed in
EAST neutral beam injection plasma with the presence of heavy tungsten impurity in the …

Since the major/minor radius of the Sino-United Spherical Tokamak (SUNIST) is 0.3/0.23 m,
respectively, the space left for magnetic diagnostics in the high field side (HFS) is quite …

A five-channel microwave interferometer with high temporal resolution and high phase
resolution has been developed for measuring electron density profiles and fluctuations on …