Control of tokamak discharge parameters using a plasma jet

Simulation of a Helium Atmospheric Plasma Jet Using Fluid Equations

In this study, a cold atmospheric He plasma jet is investigated. The jet is of dielectric barrier discharge type, consisting of a dielectric tube with two metal ring electrodes. The continuity, momentum and energy conservation equations as well as the Poisson equation for obtaining the potential and the electric field, accompanied with the ideal gas laws, are used for the simulation. The result...

Real-Time Control of a Tokamak Plasma Using Neural Networks

This paper presents results from the first use of neural networks for the real-time feedback control of high temperature plasmas in a tokamak fusion experiment. The tokamak is currently the principal experimental device for research into the magnetic confinement approach to controlled fusion. In the tokamak, hydrogen plasmas, at temperatures of up to 100 Million K, are confined by strong magnet...

Status and Prospect of Jt-60 Plasma Control System for Advanced Tokamak Discharge Scenarios

A large tokamak fusion device JT-60 is expected to explore more advanced tokamak dischrarge scenarios toward the ITER and a future power reactor. Since various experimental issues are to be adequately discussed, and possibly to be solved in JT-60, the plasma real-time control system has been drastically improved with remodeling in hardware as well as in software. To satisfy the requirements, th...

Liquid Jet-Initiated Plasma Discharge for Generating Useful Plasma Radiation

Double Langmuir probe measurement of plasma parameters in a dc glow discharge

In this paper, plasma main characteristics such as electron mean temperature, electron number density, and oscillation frequency have been measured experimentally using the double Langmuir probe diagnostic system. In our experiment, the plasma was generated by applying the low pressure dc glow discharge in several common gases. The experimental results indicated the highest plasma density and o...