Turbulent transport in the Madison Symmetric Torus reversed-field pinch

T. D. Rempel; A. F. Almagri; S. Assadi; D. J. Den Hartog; S. A. Hokin; S. C. Prager; J. S. Sarff; W. Shen; K. L. Sidikman; C. W. Spragins; J. C. Sprott; M. R. Stoneking; E. J. Zita

doi:10.1063/1.860020

Turbulent transport in the Madison Symmetric Torus reversed-field pinch

T. D. Rempel
, A. F. Almagri
, S. Assadi
, D. J. Den Hartog
, S. A. Hokin
, S. C. Prager
, J. S. Sarff
, W. Shen
, K. L. Sidikman
, C. W. Spragins
, J. C. Sprott
, M. R. Stoneking
, E. J. Zita

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Measurements of edge turbulence and the associated transport are ongoing in the Madison Symmetric Torus (MST) reversed-field pinch [Fusion Technol. 19, 131 (1991)] using magnetic and electrostatic probes. Magnetic fluctuations are dominated by m=1 and n ∼2R/a, tearing modes. Particle losses induced by magnetic field fluctuations have been found to be ambipolar (〈J̃ _∥ B̃_r〉/B₀=0). Electrostatic fluctuations are broadband and turbulent, with mode widths Δm ∼ 3-7 and Δn ∼ 70-150. Particle, parallel current, and energy transport arising from coherent motion with the fluctuating Ẽ×B drift have been measured. Particle transport via this channel is comparable to the total particle loss from MST. Energy transport (from 〈P̃Ẽ _φ〉/B₀) due to electrostatic fluctuations is relatively small, and parallel current transport (from 〈J_∥ Ẽ_φ〉/B₀) may be small as well.

Original language	English (US)
Pages (from-to)	2136-2141
Number of pages	6
Journal	Physics of Fluids B
Volume	4
Issue number	7
DOIs	https://doi.org/10.1063/1.860020
State	Published - 1992

All Science Journal Classification (ASJC) codes

Computational Mechanics
Condensed Matter Physics
Mechanics of Materials
General Physics and Astronomy
Fluid Flow and Transfer Processes

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10.1063/1.860020

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@article{c52b798bdf414873991d919106efa23f,

title = "Turbulent transport in the Madison Symmetric Torus reversed-field pinch",

abstract = "Measurements of edge turbulence and the associated transport are ongoing in the Madison Symmetric Torus (MST) reversed-field pinch [Fusion Technol. 19, 131 (1991)] using magnetic and electrostatic probes. Magnetic fluctuations are dominated by m=1 and n ∼2R/a, tearing modes. Particle losses induced by magnetic field fluctuations have been found to be ambipolar (〈{\~J} ∥ {\~B}r〉/B0=0). Electrostatic fluctuations are broadband and turbulent, with mode widths Δm ∼ 3-7 and Δn ∼ 70-150. Particle, parallel current, and energy transport arising from coherent motion with the fluctuating Ẽ×B drift have been measured. Particle transport via this channel is comparable to the total particle loss from MST. Energy transport (from 〈{\~P}Ẽ φ〉/B0) due to electrostatic fluctuations is relatively small, and parallel current transport (from 〈J∥ Ẽφ〉/B0) may be small as well.",

author = "Rempel, \{T. D.\} and Almagri, \{A. F.\} and S. Assadi and \{Den Hartog\}, \{D. J.\} and Hokin, \{S. A.\} and Prager, \{S. C.\} and Sarff, \{J. S.\} and W. Shen and Sidikman, \{K. L.\} and Spragins, \{C. W.\} and Sprott, \{J. C.\} and Stoneking, \{M. R.\} and Zita, \{E. J.\}",

year = "1992",

doi = "10.1063/1.860020",

language = "English (US)",

volume = "4",

pages = "2136--2141",

journal = "Physics of Fluids B",

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publisher = "American Institute of Physics",

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TY - JOUR

T1 - Turbulent transport in the Madison Symmetric Torus reversed-field pinch

AU - Rempel, T. D.

AU - Almagri, A. F.

AU - Assadi, S.

AU - Den Hartog, D. J.

AU - Hokin, S. A.

AU - Prager, S. C.

AU - Sarff, J. S.

AU - Shen, W.

AU - Sidikman, K. L.

AU - Spragins, C. W.

AU - Sprott, J. C.

AU - Stoneking, M. R.

AU - Zita, E. J.

PY - 1992

Y1 - 1992

N2 - Measurements of edge turbulence and the associated transport are ongoing in the Madison Symmetric Torus (MST) reversed-field pinch [Fusion Technol. 19, 131 (1991)] using magnetic and electrostatic probes. Magnetic fluctuations are dominated by m=1 and n ∼2R/a, tearing modes. Particle losses induced by magnetic field fluctuations have been found to be ambipolar (〈J̃ ∥ B̃r〉/B0=0). Electrostatic fluctuations are broadband and turbulent, with mode widths Δm ∼ 3-7 and Δn ∼ 70-150. Particle, parallel current, and energy transport arising from coherent motion with the fluctuating Ẽ×B drift have been measured. Particle transport via this channel is comparable to the total particle loss from MST. Energy transport (from 〈P̃Ẽ φ〉/B0) due to electrostatic fluctuations is relatively small, and parallel current transport (from 〈J∥ Ẽφ〉/B0) may be small as well.

AB - Measurements of edge turbulence and the associated transport are ongoing in the Madison Symmetric Torus (MST) reversed-field pinch [Fusion Technol. 19, 131 (1991)] using magnetic and electrostatic probes. Magnetic fluctuations are dominated by m=1 and n ∼2R/a, tearing modes. Particle losses induced by magnetic field fluctuations have been found to be ambipolar (〈J̃ ∥ B̃r〉/B0=0). Electrostatic fluctuations are broadband and turbulent, with mode widths Δm ∼ 3-7 and Δn ∼ 70-150. Particle, parallel current, and energy transport arising from coherent motion with the fluctuating Ẽ×B drift have been measured. Particle transport via this channel is comparable to the total particle loss from MST. Energy transport (from 〈P̃Ẽ φ〉/B0) due to electrostatic fluctuations is relatively small, and parallel current transport (from 〈J∥ Ẽφ〉/B0) may be small as well.

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DO - 10.1063/1.860020

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AN - SCOPUS:0000389827

SN - 0899-8221

VL - 4

SP - 2136

EP - 2141

JO - Physics of Fluids B

JF - Physics of Fluids B

IS - 7

ER -

Turbulent transport in the Madison Symmetric Torus reversed-field pinch

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