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Title: Final Technical Report (Phase I) 3D full wave iterative RF beams simulation tool

Abstract

Radio-frequency beams in the electron cyclotron resonance frequency range are used to heat plasma and to drive current in most fusion devices such as Tokamaks, Stellarators and Reversed Field Pinches. RF power absorption at fundamental electron cyclotron resonance or its harmonics and damping of mode converted electron Bernstein waves are being studied as the main plasma heating and control methods in future fusion reactors. Radio-frequency technologies in plasma and other dielectric media also have numerous applications beyond fusion. However, an accurate practical modeling of radio-frequency beams in plasma devices is very limited by the large spatial resolution, computer memory and CPU time requirements. Based on our recently developed hybrid iterative algorithm for effectively solving wave equations in frequency domain, we propose to develop 3-dimensional full wave iterative radio-frequency beams simulation tool which will be used for modeling of beams in fusion devices and for simulations of beams propagating in different dielectric media for industrial and military applications. We propose to use our algorithm on dynamically adapted grid with simulation points covering only the volume of the beam to reduce the memory and computing time requirements of simulations. In Phase I we: 1) Examined feasibility of using the hybrid iterative algorithmmore » for solving wave equations in 3-dimensional geometry on dynamically adapted grid for modeling radio-frequency beams; 2) Examined parallel scalability of this algorithm to large-scale parallel systems. Demonstrated fidelity of the proposed approach to solve the real scale problems. In Phase II project we will develop 3-dimensional radio-frequency and optical beams simulation tool which will be capable of: 1) Full wave modeling of radio-frequency beams in fusion devices in the cold and hot plasma dielectric response model; 2) Full wave modeling of radio-frequency and optical beams with a user specified dielectric response model in simulation volume for industrial and military applications. The code package will include a user-friendly Graphical User Interface, a post processing and a graphics module. The code will be used: in the design, operation and performance assessment of radio-frequency systems in existing and planned fusion devices, industrial radio-frequency plasma devices, electron cyclotron ion sources, in basic research on plasma waves, in communications, remote sensing and military applications.« less

Authors:
Publication Date:
Research Org.:
FAR-TECH, Inc., San Diego, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1631004
Report Number(s):
DOE19851
DOE Contract Number:  
SC0019851
Type / Phase:
SBIR (Phase I)
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Radio-frequency beams, plasma heating, current drive, magnetic confinement, plasma sources

Citation Formats

Svidzinski, Vladimir. Final Technical Report (Phase I) 3D full wave iterative RF beams simulation tool. United States: N. p., 2020. Web.
Svidzinski, Vladimir. Final Technical Report (Phase I) 3D full wave iterative RF beams simulation tool. United States.
Svidzinski, Vladimir. Wed . "Final Technical Report (Phase I) 3D full wave iterative RF beams simulation tool". United States.
@article{osti_1631004,
title = {Final Technical Report (Phase I) 3D full wave iterative RF beams simulation tool},
author = {Svidzinski, Vladimir},
abstractNote = {Radio-frequency beams in the electron cyclotron resonance frequency range are used to heat plasma and to drive current in most fusion devices such as Tokamaks, Stellarators and Reversed Field Pinches. RF power absorption at fundamental electron cyclotron resonance or its harmonics and damping of mode converted electron Bernstein waves are being studied as the main plasma heating and control methods in future fusion reactors. Radio-frequency technologies in plasma and other dielectric media also have numerous applications beyond fusion. However, an accurate practical modeling of radio-frequency beams in plasma devices is very limited by the large spatial resolution, computer memory and CPU time requirements. Based on our recently developed hybrid iterative algorithm for effectively solving wave equations in frequency domain, we propose to develop 3-dimensional full wave iterative radio-frequency beams simulation tool which will be used for modeling of beams in fusion devices and for simulations of beams propagating in different dielectric media for industrial and military applications. We propose to use our algorithm on dynamically adapted grid with simulation points covering only the volume of the beam to reduce the memory and computing time requirements of simulations. In Phase I we: 1) Examined feasibility of using the hybrid iterative algorithm for solving wave equations in 3-dimensional geometry on dynamically adapted grid for modeling radio-frequency beams; 2) Examined parallel scalability of this algorithm to large-scale parallel systems. Demonstrated fidelity of the proposed approach to solve the real scale problems. In Phase II project we will develop 3-dimensional radio-frequency and optical beams simulation tool which will be capable of: 1) Full wave modeling of radio-frequency beams in fusion devices in the cold and hot plasma dielectric response model; 2) Full wave modeling of radio-frequency and optical beams with a user specified dielectric response model in simulation volume for industrial and military applications. The code package will include a user-friendly Graphical User Interface, a post processing and a graphics module. The code will be used: in the design, operation and performance assessment of radio-frequency systems in existing and planned fusion devices, industrial radio-frequency plasma devices, electron cyclotron ion sources, in basic research on plasma waves, in communications, remote sensing and military applications.},
doi = {},
url = {https://www.osti.gov/biblio/1631004}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {5}
}

Technical Report:
This technical report may be released as soon as May 28, 2024
Other availability
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