SIMULATION OF THE ANTENNA-PLASMA COUPLING EFFICIENCY OF THE THREE-LOOP ICR ANTENNA OF THE T-15MD TOKAMAK

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Abstract

Currently, the National Research Center "Kurchatov Institute" is developing an ion-cyclotron resonance (ICR) heating system for the T-15MD tokamak. The ICRF (ion cyclotron range of frequency) system is to be used to heat the ion component of the plasma and generate a non-inductive current (drag current). The total power of the system is 6 MW with a pulse duration of up to 30 s. Under these parameters, reflected power could lead to failure of the ion-cyclotron resonance heating (ICRH) of the system. Therefore, matching the load (plasma) to the generator requires special attention. This work presents a numerical study of the antenna-plasma coupling efficiency for a three-loop antenna developed for ICRF plasma heating in the T-15MD tokamak. The dependence of the antenna impedance on plasma parameters, its position, and the phasing of the antenna excitation currents is studied.

About the authors

K. O Nedbailov

Moscow Institute of Physics and Technology (State University); National Research Center "Kurchatov Institute"

Email: nedbajlov.ko@phystech.edu
Dolgoprudnyi, Moscow region, Russia; Moscow, Russia

A. I Meshcharyakov

Prokhorov General Physics Institute, Russian Academy of Sciences

Moscow, Russia

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