Since the last IAEA Fusion Energy Conference in 2018, significant progress of the
experimental program of HL-2A has been achieved on develo** advanced plasma …

Fusion performance has been shown to be related to the H-mode pedestal structure. The
pedestal is associated with steep gradients that are the source of free energy for …

The mission of HL-2A is to explore the key physical topics relevant to ITER and to the
advanced tokamak operation (eg the operation of future HL-2M), such as the access of H …

It is necessary to achieve simultaneous exhaust of excessive transient and steady-state heat
fluxes on the divertor target for the divertor protection in the future fusion reactors. The …

An edge-coherent oscillation (ECO) with a bursting feature was observed in the steep-
gradient pedestal region of H-mode plasmas in the HL-2A tokamak, where the type-I edge …

Impurity seeding experiments in ELMy H-mode plasmas by using supersonic molecular
beam injection (SMBI) have been performed in the HL-2A tokamak. Besides pure impurity …

Improved energy confinement mode (I-mode) has been observed on the HL-2A tokamak.
The I-mode features an edge transport barrier (ETB) in electron temperature and a low …

Abstract Effect of impurity seeding on plasma global confinement has been investigated in H-
mode plasmas of the HL-2A tokamak. Metal and gas impurities can be externally seeded by …

Turbulent transport of impurity ions with hollow density profiles (HDPs), which are widely
observed in magnetically confined plasmas and desirable for fusion reactor, is self …

Impurity seeding has been confirmed to be a potential way for edge localized modes (ELMs)
to be mitigated in tokamaks. This paper mainly combines the integrated equilibria …