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Title: Theoretical reversed field pinch and tokamak studies. Progress report, November 1, 1991--June 15, 1992

Abstract

In previous work, electrostatic fluctuations that couple the free energy sources of resistive interchange turbulence (resistive g mode) and resistivity gradient driven turbulence (Rippling mode) were studied analytically and numerically. Evaluation of the predicted fluctuation levels using realistic MST parameters and the best estimates of equilibrium profiles yielded levels that appeared to be too small to agree with experiment. This work calls into question the standard scenario in which g modes (or rippling modes) are presumed to govern edge transport and account for the high frequency fluctuation activity in the RFP.

Publication Date:
Research Org.:
Wisconsin Univ., Madison, WI (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10187584
Report Number(s):
DOE/ER/53212-198
ON: DE93002775
DOE Contract Number:
FG02-85ER53212
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: [1992]
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; REVERSE-FIELD PINCH; PLASMA MACROINSTABILITIES; TOKAMAK DEVICES; PROGRESS REPORT; TURBULENCE; TEARING INSTABILITY; EIGENVALUES; OSCILLATIONS; 700370; PLASMA FLUID AND MHD PROPERTIES

Citation Formats

Not Available. Theoretical reversed field pinch and tokamak studies. Progress report, November 1, 1991--June 15, 1992. United States: N. p., 1992. Web. doi:10.2172/10187584.
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Not Available. Theoretical reversed field pinch and tokamak studies. Progress report, November 1, 1991--June 15, 1992. United States. doi:10.2172/10187584.
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Not Available. Sun . "Theoretical reversed field pinch and tokamak studies. Progress report, November 1, 1991--June 15, 1992". United States. doi:10.2172/10187584. https://www.osti.gov/servlets/purl/10187584.
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@article{osti_10187584,
title = {Theoretical reversed field pinch and tokamak studies. Progress report, November 1, 1991--June 15, 1992},
author = {Not Available},
abstractNote = {In previous work, electrostatic fluctuations that couple the free energy sources of resistive interchange turbulence (resistive g mode) and resistivity gradient driven turbulence (Rippling mode) were studied analytically and numerically. Evaluation of the predicted fluctuation levels using realistic MST parameters and the best estimates of equilibrium profiles yielded levels that appeared to be too small to agree with experiment. This work calls into question the standard scenario in which g modes (or rippling modes) are presumed to govern edge transport and account for the high frequency fluctuation activity in the RFP.},
doi = {10.2172/10187584},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Nov 01 00:00:00 EST 1992},
month = {Sun Nov 01 00:00:00 EST 1992}
}
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Technical Report:
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DOI:  10.2172/10187584
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  • This report discusses the following topics: fluctuation suppression by electrostatic current injection; pulsed poloidal current drive; effect of current drive on fluctuations; rf current drive in the RFP; development of a hyper-dissipation algorithms; and interacting magnetic islands.

  • This report discusses: nonlinear RFP behavior with nonideal boundaries; three dimensional RFP equilibria with field errors; self- consistent current density transport from microturbulence; turbulence studies in the RFP; coupled rippling and g-mode turbulence; microtearing turbulence; feedback of resistive wall instabilities; anomalous ion heating from the dynamo; effect of fluctuations on tearing instability; and thermal alfven wave fluctuations. (LSP)

  • This paper describes the progress made in Grant DE-FG02-85ER53212 since the end of the last year, August 31, 1987 to the present (June, 1988). Substantial results have emerged in two areas of high importance to the RFP program - nonlinear evolution with nonideal boundaries and self-consistent equilibrium in the presence of field errors. Both of these topics are critical for a basic understanding of RFP physics, for interpretation of current experiments, and for design of future devices and reactors. 3 refs.

  • This report gives information on research dealing with plasma stability in a reverse-field pinch device. Analytic and numerical calculations on various stability phenomena have been performed. (JDH)

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