An integrated set of neutron diagnostics developed for the deuterium operation of the Large
Helical Device (LHD) has been revealing behavior of energetic ions in three-dimensional …

An Imaging Neutral Particle Analyzer (INPA) diagnostic has been designed for the ASDEX
Upgrade (AUG) tokamak. The AUG INPA diagnostic will measure fast neutrals escaping the …

We investigated the degradation of neutral beam (NB) fast-ion confinement depending on
the NB power without magnetohydrodynamics instabilities in the Large Helical Device …

Energetic ion anisotropy was observed by tangential sightline compact neutron energy
spectrometers (CNESs) in tangential neutral beam heated deuterium plasmas in Large …

A fast-ion Dα (FIDA) diagnostics system was installed for core and edge measurements on
KSTAR. This system has two tangential FIDA arrays that cover both blue-and redshifted Dα …

The linear and nonlinear effects of hydrogen isotope species on ion temperature gradient
(ITG) instability in the Large Helical Device (LHD) stellarator are studied using radially …

A fast-sampling fast-ion D-alpha (F-FIDA) measurement has been developed in the large
helical device in order to investigate fast ion dynamics associated with helically trapped fast …

A diamond-based neutral particle analyzer (DNPA) array composed of single-crystal
chemical vapor deposition (sCVD) diamond detectors was installed on the Large Helical …

A new sightline geometry for the fast-ion D-alpha (FIDA) diagnostic on the Large Helical
Device (LHD) has been confirmed to measure signals for high-energy fast ions produced by …

A trial for extending the total neutron emission rate (S n) was performed in the Large Helical
Device (LHD) deuterium plasma experiment using a gas puff in order to show the way to …