Geodesic acoustic modes (GAMs) are ubiquitous oscillatory flow phenomena observed in
toroidal magnetic confinement fusion plasmas, such as tokamaks and stellarators. They are …

The area of energetic particle (EP) physics in fusion research has been actively and
extensively researched in recent decades. The progress achieved in advancing and …

This Letter presents the discovery of macroscale electron temperature fluctuations with a
long radial correlation length comparable to the plasma minor radius in a toroidal plasma …

Comprehensive understanding of energetic-ion-driven global instabilities such as Alfvén
eigenmodes (AEs) and their impact on energetic ions and bulk plasma is crucially important …

Abrupt and strong excitation of a mode has been observed when the frequency of a chirping
energetic-particle driven geodesic acoustic mode (EGAM) reaches twice the geodesic …

Alfvén eigenmodes (AEs) destabilized by the neutral beam injection (NBI) in a Large Helical
Device experiment are investigated using multi-phase magnetohydrodynamic (MHD) hybrid …

Energetic-particle-driven geodesic acoustic modes (EGAMs) observed in a Large Helical
Device experiment are investigated using a hybrid simulation code for energetic particles …

Nonlinear frequency chirping of the energetic-particle-driven geodesic acoustic mode
(EGAM) is investigated using a hybrid simulation code for energetic particles interacting with …

Abstract n= 0 modes with frequency chirping have been observed by a heavy ion beam
probe and Mirnov coils in the large helical device plasmas, where n is the toroidal mode …

High-frequency energetic particle driven geodesic acoustic modes (EGAM) observed in the
large helical device plasmas are investigated using a hybrid simulation code for energetic …