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Title: Final Technical Report on Funding for DE-SC0010520 “Interactions Between Microturbulence and Magnetohydrodynamic Instabilities in Magnetized Plasmas” at Princeton University

Abstract

The overall goal of this project was to develop a better understanding between small-scale microturbulence and large-scale magnetohydrodynamic (MHD) instabilities, particularly magnetic islands and tearing modes, in fusion relevant magnetically confined plasmas. This project advanced understanding through numerical simulations of different model equations. Questions addressed included how the magnitudes, spatial structures, and scalings of turbulent forcings and drags impact island dynamics, as well as what the "region of influence" of a tearing mode on the turbulence dynamics. A key finding of the project is that the microturbulence (and associated transport) exhibits spatial asymmetries for sufficiently large islands. The results have improved our fundamental understanding of plasma dynamics, motivated new experimental investigations, and will help inform future fusion predictive modeling efforts.

Authors:
;
Publication Date:
Research Org.:
Princeton Univ., NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
OSTI Identifier:
1582070
Report Number(s):
Final Report DE-Princeton-SC0010520
DOE Contract Number:  
SC0010520
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Brennan, Dylan, and Holland, Christopher. Final Technical Report on Funding for DE-SC0010520 “Interactions Between Microturbulence and Magnetohydrodynamic Instabilities in Magnetized Plasmas” at Princeton University. United States: N. p., 2020. Web. doi:10.2172/1582070.
Brennan, Dylan, & Holland, Christopher. Final Technical Report on Funding for DE-SC0010520 “Interactions Between Microturbulence and Magnetohydrodynamic Instabilities in Magnetized Plasmas” at Princeton University. United States. doi:10.2172/1582070.
Brennan, Dylan, and Holland, Christopher. Fri . "Final Technical Report on Funding for DE-SC0010520 “Interactions Between Microturbulence and Magnetohydrodynamic Instabilities in Magnetized Plasmas” at Princeton University". United States. doi:10.2172/1582070. https://www.osti.gov/servlets/purl/1582070.
@article{osti_1582070,
title = {Final Technical Report on Funding for DE-SC0010520 “Interactions Between Microturbulence and Magnetohydrodynamic Instabilities in Magnetized Plasmas” at Princeton University},
author = {Brennan, Dylan and Holland, Christopher},
abstractNote = {The overall goal of this project was to develop a better understanding between small-scale microturbulence and large-scale magnetohydrodynamic (MHD) instabilities, particularly magnetic islands and tearing modes, in fusion relevant magnetically confined plasmas. This project advanced understanding through numerical simulations of different model equations. Questions addressed included how the magnitudes, spatial structures, and scalings of turbulent forcings and drags impact island dynamics, as well as what the "region of influence" of a tearing mode on the turbulence dynamics. A key finding of the project is that the microturbulence (and associated transport) exhibits spatial asymmetries for sufficiently large islands. The results have improved our fundamental understanding of plasma dynamics, motivated new experimental investigations, and will help inform future fusion predictive modeling efforts.},
doi = {10.2172/1582070},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {1}
}