Author: Abhay RamPublisher:
ISBN:
Category :
Languages : en
Pages : 8
Book Description
ICRF Heating of Large Tokamaks, Antenna-plasma Coupling Theory for
Author: Abhay RamAntenna-plasma Coupling Theory for ICRF Heating of Large Tokamaks
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The coupling characteristics of antenna structure are studied by analyzing a model where a thin current sheet is placed between a fully conducting wall and a sheet of anisotropic conductivity representing the screen. The inhomogeneous plasma in the shadow of the limiter is assumed to extend from the screen onwards away from the antenna. The excitation of the fields inside the plasma are found by analyzing the radiation properties of this current sheet antenna. We assume that the current distribution of the antenna is given and that the fields excited inside the plasma are absorbed in a single pass. In all experiments to-date the cross-sectional plasmas are relatively small so that the rf conductor is a half-loop around the plasma in the poloidal direction. However, for reactor size plasmas this cannot be done and the antenna dimensions will be small compared to the plasma cross-sections. We, thus, assume an antenna of finite poloidal and toroidal extent with dimensions small compared to the plasma minor radius. We further approximate the coupling geometry by a slab model. The x-axis is taken to be along the plasma inhomogeneity, the y-axis along the poloidal direction and the x-axis along the toroidal magnetic field.
Coupling Theory for ICRF Heating of Large Tokamaks
Author: Abhay RamICRF Heating and Antenna Coupling in a High Beta Tokamak
Author: Richard Scott EletA Study of Coupling and Edge Processes for ICRF Antennas
Author: Ira Scott LehrmanWave Heating and Current Drive in Plasmas
Author: Victor L. GranatsteinPublisher: CRC Press
ISBN: 9782881240577
Category : Science
Languages : en
Pages : 524
Book Description
Computational Modeling of ICRF Antenna Coupling in Tokamaks
Author: Michael H. BettenhausenPublisher:
ISBN:
Category :
Languages : en
Pages : 346
Book Description
Fusion Plasma Theory
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 10
Book Description
The research performed under this grant during the past year has been concentrated on the following several key tokamak ICRF (Ion Cyclotron Range of Frequencies) coupling, heating and current drive issues: Efficient coupling during the L- to H- mode transition by analysis and computer simulation of ICRF antennas; analysis of ICRF cavity-backed coil antenna coupling to plasma edge profiles including fast and ion Bernstein wave coupling for heating and current drive; benchmarking the codes to compare with current JET, D-IIID and ASDEX experimental results and predictions for advanced tokamaks such as BPX and SSAT (Steady-State Advanced Tokamak); ICRF full-wave field solutions, power conservation, heating analyses and minority ion current drive; and the effects of fusion alpha particle or ion tail populations on the ICRF absorption. Research progress, publications, and conference and workshop presentations are summarized in this report.
Author: J. Hosea
Author: