This paper reviews current understanding of key physics elements that control the H-mode
pedestal structure, which exists at the boundary of magnetically confined plasmas. The …

Abstract A database of DIII-D plasmas without edge-localized modes (ELMs) compares the
operating space and plasma performance of stationary no-ELM regimes found in …

Divertor detachment offers a promising solution to the challenge of plasma-wall interactions
for steady-state operation of fusion reactors. Here, we demonstrate the excellent …

The unique capabilities of the SPARC tokamak mean that it has the potential to contribute
significantly to tokamak science and plasma physics, motivating further collaboration and …

SPARC is designed to be a high-field, medium-size tokamak aimed at achieving net energy
gain with ion cyclotron range-of-frequencies (ICRF) as its primary auxiliary heating …

COMPASS Upgrade is a new medium size, high magnetic field tokamak (R= 0.9 m, B t= 5 T,
I p= 2 MA) currently under design in the Czech Republic. It will provide unique capabilities …

A reduction of the pedestal pressure with increasing separatrix density over pedestal density
(ne sep/ne ped) has been observed in JET. The physics behind this correlation is …

How much of the density pedestal structure is determined by fueling versus transport is still
an open question. In most current tokamaks, the scrape-off layer is not opaque enough to …

Physics-based simulations project a compact net electric fusion pilot plant with a nuclear
testing mission is possible at modest scale based on the advanced tokamak concept, and …

An accurate description of turbulence up to the transport timescale is essential for predicting
core plasma profiles and enabling reliable calculations for designing advanced scenarios …