نتایج جستجو برای: tokamak
تعداد نتایج: 4114 فیلتر نتایج به سال:
The Korea Superconducting Tokamak Advanced Research (KSTAR) device site assembly was completed by May 2007. During the assembly period, several key technologies were developed to assemble the superconducting tokamak and its ancillary systems. As will be described in this paper, we encountered several problems and difficulties that mainly stemmed from the uniqueness of the superconducting tokama...
The predictions of gyrokinetic and gyroouid simulations of ion-temperature-gradient (ITG) instability and turbulence in tokamak plasmas as well as some tokamak plasma thermal transport models, which have been widely used for predicting the performance of the proposed ITER tokamak, are compared. These comparisons provide information on eeects of diierences in the physics content of the various m...
A new paradigm for real-time plasma profile reconstruction is demonstrated in the TCV tokamak. Predictions based on physics models are merged with available real-time diagnostic data to construct a self-consistent profile state estimate compatible with a timedependent model of transport processes in the plasma. This is enabled by a new RApid Plasma Transport simulatOR (RAPTOR), implemented in t...
The Korea Superconducting Tokamak Advanced Research (KSTAR) Project is the major effort of the Korean National Fusion Program (KNFP) to develop a steady-state-capable advanced superconducting tokamak to establish a scientific and technological basis for an attractive fusion reactor. Major parameters of the tokamak are: major radius 1.8 m, minor radius 0.5 m, toroidal field 3.5 Tesla, and plasma...
In tokamak and other fusion devices, magnetic control is the main tool that allows to regulate plasma current, position shape; it in charge of actuating desired current waveform, steering a given set point maintain shape close prescribed equilibrium. This work describes application several physics concepts computational tools order obtain novel optimal controller for centroid position, which ha...
It is argued that the form commonly adopted for heuristic representation of tokamak momentum diffusion has major shortcomings, and that a non-diffusive momentum-flux term independent of velocity is more appropriate.
In this work, an automated method for the analysis of data from correlation electron cyclotron emission (CECE) diagnostic is applied to discharges in ASDEX Upgrade (AUG) tokamak. This recently developed, provides efficient means accurately analysing large quantities experimental turbulence data, enabling development largest database CECE measurements tokamak plasmas to-date. The opportunity sea...
Abstract Plasma boundary detection and reconstruction are important not only for plasma operation but also facing materials. Traditional methods, example, EFIT code, which is constrained by electromagnetic measurement, very challenging detecting the in long-pulse burning devices such as ITER. A novel algorithm of using one visible camera has been developed on experimental advanced superconducti...
In a small tokamak, the visible light emission is observed and used to investigate plasmas' behavior with fast camera. However, reflected causes systemic error in measuring emitted from plasma. this paper, we managed overcome reflection effect ray-tracing technique which utilized synthetic diagnostic platform of tokamak device PHiX at Tokyo Institute Technology using Raysect CHERAB python libra...
The paper presents observations of plasma intermediate frequency range wave emission ((200--1000) MHz) performed in ohmic discharge the FT-2 tokamak. dependencies RF signal amplitude and spectrum on parameters location probes are presented. Two possible explanations for this effect is proposed. One them related to distortion electron distribution function due strong ripple magnetic field Second...
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