The Lawson criterion is a key concept in the pursuit of fusion energy, relating the fuel density
n, pulse duration τ or energy confinement time τ E, and fuel temperature T to the energy gain …

Abstract Proton-boron (p11B) fusion is an attractive potential energy source but technically
challenging to implement. Developing techniques to realize its potential requires first …

Wendelstein 7-X is a highly optimized stellarator that went into operation in 2015. With a 30
cubic meter volume, a superconducting coil system operating at 2.5 T, and steady-state …

As the finalization of a hydrogen experiment towards the deuterium phase, the exploration of
the best performance of hydrogen plasma was intensively performed in the large helical …

Achievement of reactor relevant plasma condition in Helical type magnetic devices and
exploration in its related plasma physics and fusion engineering are the aim of the Large …

NIFS launched the Fusion Engineering Research Project (FERP) in preparation for DEMO
by starting the redesign of the LHD-type helical reactor FFHR-d1. In the first round, the main …

The ablation and assimilation of cryogenic pure H 2 and mixed H 2+ Ne pellets, which are
foreseen to be used by the ITER tokamak for mitigating thermal and electromagnetic loads of …

Based on high-density and high-temperature plasma experiments in the large helical device
(LHD), conceptual design studies of the LHD-type helical DEMO reactor FFHR-d1 have …

Ion temperature gradient turbulent transport in the large helical device (LHD) is investigated
by means of gyrokinetic simulations in comparison with the experimental density fluctuation …

In stellarators, increasing the density is beneficial for the energy confinement. While there is
no single reason for this observation, it is still very robust across different devices and this is …