Energetic ion transport due to microturbulence is investigated in magnetohydrodynamic-quiescent plasmas by way of neutral beam injection in the DIII-D tokamak [J. L. Luxon, Nucl. Fusion 42, 614 (2002)]. A range of on-axis and off-axis beam injection scenarios are employed to vary relevant parameters such as the character of the background microturbulence and the value of , where Eb is the energetic ion energy and Te the electron temperature. In all cases, it is found that any transport enhancement due to microturbulence is too small to observe experimentally. These transport effects are modeled using numerical and analytic expectations that calculate the energetic ion diffusivity due to microturbulence. It is determined that energetic ion transport due to coherent fluctuations (e.g., Alfvén eigenmodes) is a considerably larger effect and should therefore be considered more important for ITER.
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May 2013
Research Article|
May 07 2013
Energetic ion transport by microturbulence is insignificant in tokamaksa)
D. C. Pace (庞大卫);
D. C. Pace (庞大卫)
b)
1
General Atomics
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M. E. Austin;
M. E. Austin
2
University of Texas-Austin
, 2100 San Jacinto Blvd, Austin, Texas 78712-1047, USA
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E. M. Bass;
E. M. Bass
3
University of California
, San Diego, 9500 Gilman Dr., La Jolla, California 92093-0417, USA
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R. V. Budny;
R. V. Budny
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Princeton Plasma Physics Laboratory
, PO Box 451, Princeton, New Jersey 08543-0451, USA
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W. W. Heidbrink;
W. W. Heidbrink
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University of California
, Irvine, University Dr., Irvine, California 92697, USA
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J. C. Hillesheim;
J. C. Hillesheim
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University of California, Los Angeles
, PO Box 957099, Los Angeles, California 90095-7099, USA
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C. T. Holcomb;
C. T. Holcomb
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Lawrence Livermore National Laboratory
, 7000 East Ave, Livermore, California 94550-9234, USA
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M. Gorelenkova;
M. Gorelenkova
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Princeton Plasma Physics Laboratory
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B. A. Grierson;
B. A. Grierson
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Princeton Plasma Physics Laboratory
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D. C. McCune;
D. C. McCune
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Princeton Plasma Physics Laboratory
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G. R. McKee;
G. R. McKee
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University of Wisconsin-Madison
, 1500 Engineering Dr., Madison, Wisconsin 53706, USA
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C. M. Muscatello;
C. M. Muscatello
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University of California
, Irvine, University Dr., Irvine, California 92697, USA
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J. M. Park;
J. M. Park
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Oak Ridge National Laboratory
, PO Box 2008, Oak Ridge, Tennessee 37831, USA
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C. C. Petty;
C. C. Petty
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General Atomics
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T. L. Rhodes;
T. L. Rhodes
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University of California, Los Angeles
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G. M. Staebler;
G. M. Staebler
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General Atomics
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T. Suzuki;
T. Suzuki
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Japan Atomic Energy Agency
, 801-1, Mukoyama, Naka, Ibaraki-ken 311-0193, Japan
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M. A. Van Zeeland;
M. A. Van Zeeland
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General Atomics
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R. E. Waltz;
R. E. Waltz
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General Atomics
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G. Wang;
G. Wang
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University of California, Los Angeles
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A. E. White;
A. E. White
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Massachusetts Institute of Technology
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Z. Yan;
Z. Yan
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University of Wisconsin-Madison
, 1500 Engineering Dr., Madison, Wisconsin 53706, USA
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X. Yuan;
X. Yuan
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Princeton Plasma Physics Laboratory
, PO Box 451, Princeton, New Jersey 08543-0451, USA
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Y. B. Zhu
Y. B. Zhu
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University of California
, Irvine, University Dr., Irvine, California 92697, USA
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b)
Invited speaker. Electronic mail: [email protected]
a)
Paper JI2 5, Bull. Am. Phys. Soc. 57, 151 (2012).
Phys. Plasmas 20, 056108 (2013)
Article history
Received:
December 14 2012
Accepted:
March 08 2013
Citation
D. C. Pace, M. E. Austin, E. M. Bass, R. V. Budny, W. W. Heidbrink, J. C. Hillesheim, C. T. Holcomb, M. Gorelenkova, B. A. Grierson, D. C. McCune, G. R. McKee, C. M. Muscatello, J. M. Park, C. C. Petty, T. L. Rhodes, G. M. Staebler, T. Suzuki, M. A. Van Zeeland, R. E. Waltz, G. Wang, A. E. White, Z. Yan, X. Yuan, Y. B. Zhu; Energetic ion transport by microturbulence is insignificant in tokamaks. Phys. Plasmas 1 May 2013; 20 (5): 056108. https://doi.org/10.1063/1.4803930
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