I-mode studies at ASDEX Upgrade: L-I and I-H transitions, pedestal and confinement properties [PDF]
, 2016 The I-mode is a plasma regime obtained when the usual L-H power threshold is high, e.g. with unfavourable ion B ∇ direction. It is characterised by the development of a temperature pedestal while the density remains roughly as in the L-mode ...
Barrera Orte, L. +15 more
core +1 more source
Active wall conditioning through boron powder injection compatible ELM control in EAST
Nuclear Materials and Energy, 2023 Real-time wall conditioning and edge-localized mode (ELM) suppression through real-time boron powder injection into high-confinement mode discharges of the Experimental Advanced Superconducting Tokamak (EAST) have been investigated.
W. Xu +12 more
doaj +1 more source
Comparative H-mode density limit studies in JET and AUG
Nuclear Materials and Energy, 2017 Identification of the mechanisms for the H-mode density limit in machines with fully metallic walls, and their scaling to future devices is essential to find for these machines the optimal operational boundaries with the highest attainable density and ...
A. Huber +36 more
doaj +1 more source
The effect of impurity seeding into the closed divertor on plasma detachment in the HL-2A tokamak
Nuclear Fusion, 2023 Recent progress towards an increased understanding of detached divertor physics has been made with the highly closed divertor geometry in HL-2A. Non-intrinsic impurities were injected into the outer divertor chamber, and increased divertor neutral ...
J.M. Gao +23 more
doaj +1 more source
Study of the spectral properties of ELM precursors by means of wavelets [PDF]
, 2008 The high confinement regime (H-mode) in tokamaks is accompanied by the occurrence of bursts of MHD activity at the plasma edge, so-called edge localized modes (ELMs), lasting less than 1 ms.
Connor J W +10 more
core +1 more source
Continuous observation of filaments from the confined region to the far scrape-off layer
Nuclear Materials and Energy, 2020 The thermal helium beam diagnostic at ASDEX Upgrade can access the whole plasma edge region simultaneously with a high spatiotemporal resolution. Manifold dynamics of plasma edge transport is observed for different plasma confinement regimes, comprising ...
M. Griener +10 more
doaj +1 more source
Identification of I-mode with ion ITB in NBI-heated plasmas on the HL-2A tokamak
Nuclear Fusion, 2023 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 confinement mode like edge density.
A.S. Liang +23 more
doaj +1 more source
Integrated simulation of plasma current profile in HL-2A high confinement mode(H mode)
Acta Physica Sinica, 2021 The plasma current (<i>I</i><sub>p</sub><italic/>), magnetic field (<i>B</i>), and safety factor distribution (<i>q</i> profile) of the HL-2A tokamak device are crucial to monitoring the steady-state operational scenarios (in high confinement mode, H mode).
Hong-Ming Zhang +7 more
openaire +1 more source
Convective particle transport arising from poloidal inhomogeneity in tokamak H mode [PDF]
, 2005 In tokamak high-confinement modes (H modes), a large poloidal flow exists within an edge transport barrier, and the electrostatic potential and density profiles can be steep both in the radial and poloidal directions.
Itoh K., K. Itoh, Kasuya N., N. Kasuya
core +2 more sources
Improved plasma performance on Large Helical Device [PDF]
, 2001 Since the start of the Large Helical Device (LHD) experiment, various attempts have been made to achieve improved plasma performance in LHD [A. Iiyoshi et al., Nucl. Fusion 39, 1245 (1999)].
A. Komori +84 more
core +2 more sources