Radial electric field and density fluctuations measured by Doppler reflectometry during the post-pellet enhanced confinement phase in W7-X
Radial profiles of density fluctuations and the radial electric field, E r, have been measured
using Doppler reflectometry during the post-pellet enhanced confinement phase achieved …
using Doppler reflectometry during the post-pellet enhanced confinement phase achieved …
Development and application of real-time magnetic coordinate mapping system in the Large Helical Device
We have newly developed a large-scale equilibrium database for real-time magnetic
coordinate mapping system in the Large Helical Device. Thousands of free-boundary …
coordinate mapping system in the Large Helical Device. Thousands of free-boundary …
Isotope effects on transport in LHD
Isotope effects are one of the most important issues for predicting future reactor operations.
Large helical device (LHD) is the presently working largest stellarator/helical device using …
Large helical device (LHD) is the presently working largest stellarator/helical device using …
Twenty barrel in situ pipe gun type solid hydrogen pellet injector for the Large Helical Device
R Sakamoto, G Motojima, H Hayashi, T Inoue… - Review of Scientific …, 2013 - pubs.aip.org
A 20 barrel solid hydrogen pellet injector, which is able to inject 20 cylindrical pellets with a
diameter and length of between 3.0 and 3.8 mm at the velocity of 1200 m/s, has been …
diameter and length of between 3.0 and 3.8 mm at the velocity of 1200 m/s, has been …
Confinement in Wendelstein 7-X limiter plasmas
M Hirsch, A Dinklage, A Alonso, G Fuchert… - Nuclear …, 2017 - iopscience.iop.org
Observations on confinement in the first experimental campaign on the optimized Stellarator
Wendelstein 7-X are summarized. In this phase W7-X was equipped with five inboard …
Wendelstein 7-X are summarized. In this phase W7-X was equipped with five inboard …
Initial exploration of high-field pulsed stellarator approach to ignition experiments
In the framework of fusion energy research based on magnetic confinement, pulsed high-
field tokamaks such as Alcator and FTU have made significant scientific contributions, while …
field tokamaks such as Alcator and FTU have made significant scientific contributions, while …
High-density experiments with hydrogen ice pellet injection and analysis of pellet penetration depth in Heliotron J
G Motojima, H Okada, H Okazaki… - Plasma Physics and …, 2019 - iopscience.iop.org
A hydrogen cryogenic pellet injection system was fabricated and applied to high-density
experiments in a Heliotron J device. The fueling through pellet injection was conducted in …
experiments in a Heliotron J device. The fueling through pellet injection was conducted in …
Zeff profile diagnostics using visible bremsstrahlung continuum for nonaxisymmetric plasmas with finite β in large helical device
HY Zhou, S Morita, M Goto, CF Dong - Journal of Applied Physics, 2010 - pubs.aip.org
An astigmatism-corrected Czerny–Turner-type visible spectrometer coupled with a charge-
coupled device has been installed in large helical device (LHD) to measure visible …
coupled device has been installed in large helical device (LHD) to measure visible …
Pellet fuelling requirements to allow self-burning on a helical-type fusion reactor
R Sakamoto, J Miyazawa, H Yamada… - Nuclear …, 2012 - iopscience.iop.org
Pellet refuelling conditions to sustain a self-burning plasma have been investigated by
extrapolating the confinement property of the LHD plasma, which appears to be governed by …
extrapolating the confinement property of the LHD plasma, which appears to be governed by …
Divertor heat and particle control experiments on the large helical device
In the Large Helical Device (LHD), studies of divertor heat and particle control have been
conducted with a helical divertor magnetic structure which exists naturally in the heliotron …
conducted with a helical divertor magnetic structure which exists naturally in the heliotron …