A5074439399- Magnetic confinement fusion research
- Particle accelerators and beam dynamics
- Ionosphere and magnetosphere dynamics
- Fusion materials and technologies
- Superconducting Materials and Applications
- Laser-Plasma Interactions and Diagnostics
- Solar and Space Plasma Dynamics
- Plasma Diagnostics and Applications
- Fluid Dynamics and Turbulent Flows
- Plant Water Relations and Carbon Dynamics
- Fluid Dynamics Simulations and Interactions
- Advanced Numerical Analysis Techniques
- Numerical methods in engineering
- Meteorological Phenomena and Simulations
- Atomic and Molecular Physics
- Advanced Power Generation Technologies
- Nuclear reactor physics and engineering
- Climate variability and models
- Gyrotron and Vacuum Electronics Research
- Molten salt chemistry and electrochemical processes
- Physics of Superconductivity and Magnetism
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Electromagnetic Launch and Propulsion Technology
- Model Reduction and Neural Networks
Southwestern Institute of Physics
2020-2024
Institute of Plasma Physics
2023
Chinese Academy of Sciences
2023
CEA Cadarache
2004-2021
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2004-2021
Southwest Jiaotong University
2020
Institut de Recherche sur la Fusion par Confinement Magnétique
2017
Électricité de France (France)
2015
Mastering nuclear fusion, which is an abundant, safe, and environmentally competitive energy, a great challenge for humanity. Tokamak represents one of the most promising paths toward controlled fusion. Obtaining high-performance, steady-state, long-pulse plasma regime remains critical issue. Recently, big breakthrough in steady-state operation was made on Experimental Advanced Superconducting (EAST). A with world-record pulse length 1056 s obtained, where density divertor peak heat flux...
With WEST (Tungsten Environment in Steady State Tokamak) (Bucalossi et al 2014 Fusion Eng. Des. 89 907–12), the Tore Supra facility and team expertise (Dumont Plasma Phys. Control. 56 075020) is used to pave way towards ITER divertor procurement operation. It consists implementing a configuration installing ITER-like actively cooled tungsten monoblocks tokamak, taking full benefit of its unique long-pulse capability. user platform, open all partners. This paper describes physics basis WEST:...
This paper is an overview of recent results relating to turbulent particle and heat transport, the triggering internal transport barriers (ITBs). The dependence pinch velocity on plasma parameters has been clarified compared with experiment. Magnetic shear collisionality are found play a central role. Analysis made progress along two directions: dimensionless scaling laws, which agree prediction for electrostatic turbulence, analysis modulation experiments, provide stringent test models....
Since the first H-mode discharges in 2010, duration of state has been extended and a significantly wider operational window plasma parameters attained. Using second neutral beam (NB) source improved tuning equilibrium configuration with real-time control, stored energy Wtot ∼ 450 kJ achieved corresponding confinement time τE 163 ms. Recent discharges, produced fall 2012, have reached βN up to 2.9 surpassed n = 1 ideal no-wall stability limit computed for pressure profiles, which is one key...
The mission of HL-2A is to explore the key physical topics relevant ITER and advanced tokamak operation (e.g. future HL-2M), such as access H-mode, energetic particle physics, edge-localized mode (ELM) mitigation/suppression disruption mitigation. Since 2016 Fusion Energy Conference, team has focused on investigations following areas: (i) pedestal dynamics L–H transition, (ii) techniques ELM control, (iii) turbulence transport, (iv) physics. results demonstrated that increase mean shear flow...
Since the last Fusion Energy Conference, significant progress has been made in following areas. The first high coupling efficiency low-hybrid current drive (LHCD) with a passive–active multi-junction (PAM) antenna was successfully demonstrated H-mode on HL-2A tokamak. Double critical impurity gradients of electromagnetic turbulence were observed plasmas. Various ELM mitigation techniques have investigated, including supersonic molecular beam injection (SMBI), seeding, resonant magnetic...
Physics related to fast electrons in lower hybrid (LH) current drive (LHCD) plasma is a very important issue, since these particles will play an role runaway electron (RE) generation and wave (LHW)-related physics. Utilizing new hard X-ray (HXR) pinhole camera, recent HL-2A tokamak experiments have devoted enhancing the understanding of physics on LHW. The bremsstrahlung (FEB) emission HXR energy range between 20 200 keV was measured by camera. To study conversion LHW-produced into REs,...
Our understanding of the physics internal transport barriers (ITBs) is being advanced by analysis and comparisons experimental data from many different tokamaks worldwide. An international database consisting scalar two-dimensional profile for ITB plasmas developed to determine requirements formation sustainment ITBs perform tests theory-based models in an effort improve predictive capability models. Analysis using indicates that: (a) power required form decreases with increased negative...
This paper presents recent Lower Hybrid Current Drive (LHCD) progress in SWIP, including the experiments on HL-2A and system development HL-2M. The 3.7GHz LHCD was built HL-2A, where first Wave (LHW) coupling to H-mode plasma experiment via Passive-Active Multijunction (PAM) launcher carried out. coupled power has been increased much from 470kW 1400kW since 2014. LHW became more important discharges past 4 years. In 2018, 1.1s ELMy achieved with help of Neutral Beam Injection (NBI)...
For the first time, data from eight different tokamaks have been combined in an international database for internal transport barriers (ITBs). An analysis of formation ITB with dominant ion heating shows a clear dependence threshold power on minor radius and line-averaged electron density ITBs. The toroidal magnetic field is weak. ITBs heating, smaller, but strong increase plasma size weak could also be identified. Based these results, expression required to form given using global variables...
Radiative mantle experiments were performed on JET ELMy H-mode plasmas. The septum configuration was used where the X-point is embedded into top of septum. Argon radiated 50% input power from bulk plasma while Zeff rose an intrinsic level 1.5 to about 1.7 due injected argon. total energy content and global confinement time decreased 15% when impurities introduced. In contrast, effective thermal diffusivity in core region (r/a = 0.4-0.8) by 30%. Usually, plasmas have that correlated edge...
Abstract This paper presents the current status of WEST TWA antenna, its mock-up and a possible extrapolation to DEMO. The updated design has reduced antenna length features feeding mechanical support from single vessel port. A was designed in 2019, manufactured during 2020 installed TITAN test facility at beginning 2021. results low high power, diagnostic system prospects are explained. Extensions towards for future DEMO tokamak reactor briefly discussed.
The first Lower Hybrid (LH) experiments were carried out with a Passive-Active Multijunction (PAM) launcher in H-mode plasmas. performed on the HL-2A tokamak new 3.7 GHz LHCD system, installed and tested by SWIP collaboration CEA/RFM. ELMs local gas impact LH power coupling was studied experiments. coupled 200-500kW at large gap reaches 900 kW now H-mode, while it 1MW L-mode. show that PAM is viable concept for high performance scenarios. can be plasma-launcher gap, assist triggering...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation W. Horton, J.‐H. Kim, E. Asp, T. Hoang, T.‐H. Watanabe, H. Sugama; Drift Wave Turbulence. AIP Conf. Proc. 14 May 2008; 1013 (1): 1–19. https://doi.org/10.1063/1.2939032 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Dropdown Menu...
The KSTAR (Korea Superconducting Tokamak Advanced Researc pursued to develop key technologies for superconducting tokamak operation and contribute a few research items ITER relevant issues. As result, the achieved highly confined mode (H-mod in 2010 campaign successfully demonstrated suppression of Edge Localized Mode (ELM) using n=1 Resonant Magnetic Perturbation (RMP) coils. is also initiating machine performance based on designed parameters. plasma current we was 1 MA, longest pulse...