Overview of results in the MST reversed field pinch experiment

S. C. Prager; J. Adney; A. Almagri; J. Anderson; A. Blair; D. L. Brower; M. Cengher; B. E. Chapman; S. Choi; D. Craig; S. Combs; D. R. Demers; D. J. Den Hartog; B. Deng; W. X. Ding; F. Ebrahimi; D. Ennis; G. Fiksel; R. Fitzpatrick; C. Foust; C. B. Forest; P. Franz; L. Frassinetti; J. Goetz; D. Holly; B. Hudson; M. Kaufman; T. Lovell; L. Marrelli; P. Martin; K. McCollam; V. V. Mirnov; P. Nonn; R. O'Connell; S. Oliva; P. Piovesan; I. Predebon; J. S. Sarff; G. Spizzo; V. Svidzinski; M. Thomas; E. Uchimoto; R. White; M. Wyman

doi:10.1088/0029-5515/45/10/S23

Overview of results in the MST reversed field pinch experiment

S. C. Prager, J. Adney, A. Almagri, J. Anderson, A. Blair, D. L. Brower, M. Cengher, B. E. Chapman, S. Choi, D. Craig, S. Combs, D. R. Demers, D. J. Den Hartog, B. Deng, W. X. Ding, F. Ebrahimi, D. Ennis, G. Fiksel, R. Fitzpatrick, C. FoustC. B. Forest, P. Franz, L. Frassinetti, J. Goetz, D. Holly, B. Hudson, M. Kaufman, T. Lovell, L. Marrelli, P. Martin, K. McCollam, V. V. Mirnov, P. Nonn, R. O'Connell, S. Oliva, P. Piovesan, I. Predebon, J. S. Sarff, G. Spizzo, V. Svidzinski, M. Thomas, E. Uchimoto, R. White, M. Wyman

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

15 Scopus citations

Abstract

Confinement in the reversed field pinch (RFP) has been shown to increase strongly with current profile control. The MST RFP can operate in two regimes: the standard regime with a naturally occurring current density profile, robust reconnection and dynamo activity; and the improved confinement regime with strong reduction in reconnection, dynamo and transport. New results in standard plasmas include the observation of a strong two-fluid Hall effect in reconnection and dynamo, the determination that the m ≤ 0 edge resonant mode is nonlinearly driven, and the determination that tearing modes can lock to the wall via eddy currents in the shell. New results in improved confinement plasmas include observations that such plasmas are essentially dynamo-free, contain several isolated magnetic islands (as opposed to a stochastic field) and contain reduced high frequency turbulence. Auxiliary current drive and heating is now critical to RFP research. In MST, a programme to apply auxiliary systems to the RFP is underway and progress has accrued in several techniques, including lower hybrid and electron Bernstein wave injection, ac helicity injection current drive, pellet injection and neutral beam injection.

Original language	English
Pages (from-to)	S276-S282
Journal	Nuclear Fusion
Volume	45
Issue number	10
DOIs	https://doi.org/10.1088/0029-5515/45/10/S23
State	Published - Oct 1 2005
Externally published	Yes

Funding

Funders	Funder number
National Science Foundation	0821899

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1088/0029-5515/45/10/S23

Cite this

Prager, S. C., Adney, J., Almagri, A., Anderson, J., Blair, A., Brower, D. L., Cengher, M., Chapman, B. E., Choi, S., Craig, D., Combs, S., Demers, D. R., Den Hartog, D. J., Deng, B., Ding, W. X., Ebrahimi, F., Ennis, D., Fiksel, G., Fitzpatrick, R., ... Wyman, M. (2005). Overview of results in the MST reversed field pinch experiment. Nuclear Fusion, 45(10), S276-S282. https://doi.org/10.1088/0029-5515/45/10/S23

@article{316f3b417b68475781df4a269c425896,

title = "Overview of results in the MST reversed field pinch experiment",

abstract = "Confinement in the reversed field pinch (RFP) has been shown to increase strongly with current profile control. The MST RFP can operate in two regimes: the standard regime with a naturally occurring current density profile, robust reconnection and dynamo activity; and the improved confinement regime with strong reduction in reconnection, dynamo and transport. New results in standard plasmas include the observation of a strong two-fluid Hall effect in reconnection and dynamo, the determination that the m ≤ 0 edge resonant mode is nonlinearly driven, and the determination that tearing modes can lock to the wall via eddy currents in the shell. New results in improved confinement plasmas include observations that such plasmas are essentially dynamo-free, contain several isolated magnetic islands (as opposed to a stochastic field) and contain reduced high frequency turbulence. Auxiliary current drive and heating is now critical to RFP research. In MST, a programme to apply auxiliary systems to the RFP is underway and progress has accrued in several techniques, including lower hybrid and electron Bernstein wave injection, ac helicity injection current drive, pellet injection and neutral beam injection.",

author = "Prager, {S. C.} and J. Adney and A. Almagri and J. Anderson and A. Blair and Brower, {D. L.} and M. Cengher and Chapman, {B. E.} and S. Choi and D. Craig and S. Combs and Demers, {D. R.} and {Den Hartog}, {D. J.} and B. Deng and Ding, {W. X.} and F. Ebrahimi and D. Ennis and G. Fiksel and R. Fitzpatrick and C. Foust and Forest, {C. B.} and P. Franz and L. Frassinetti and J. Goetz and D. Holly and B. Hudson and M. Kaufman and T. Lovell and L. Marrelli and P. Martin and K. McCollam and Mirnov, {V. V.} and P. Nonn and R. O'Connell and S. Oliva and P. Piovesan and I. Predebon and Sarff, {J. S.} and G. Spizzo and V. Svidzinski and M. Thomas and E. Uchimoto and R. White and M. Wyman",

year = "2005",

month = oct,

day = "1",

doi = "10.1088/0029-5515/45/10/S23",

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Prager, SC, Adney, J, Almagri, A, Anderson, J, Blair, A, Brower, DL, Cengher, M, Chapman, BE, Choi, S, Craig, D, Combs, S, Demers, DR, Den Hartog, DJ, Deng, B, Ding, WX, Ebrahimi, F, Ennis, D, Fiksel, G, Fitzpatrick, R, Foust, C, Forest, CB, Franz, P, Frassinetti, L, Goetz, J, Holly, D, Hudson, B, Kaufman, M, Lovell, T, Marrelli, L, Martin, P, McCollam, K, Mirnov, VV, Nonn, P, O'Connell, R, Oliva, S, Piovesan, P, Predebon, I, Sarff, JS, Spizzo, G, Svidzinski, V, Thomas, M, Uchimoto, E, White, R & Wyman, M 2005, 'Overview of results in the MST reversed field pinch experiment', Nuclear Fusion, vol. 45, no. 10, pp. S276-S282. https://doi.org/10.1088/0029-5515/45/10/S23

TY - JOUR

T1 - Overview of results in the MST reversed field pinch experiment

AU - Prager, S. C.

AU - Adney, J.

AU - Almagri, A.

AU - Anderson, J.

AU - Blair, A.

AU - Brower, D. L.

AU - Cengher, M.

AU - Chapman, B. E.

AU - Choi, S.

AU - Craig, D.

AU - Combs, S.

AU - Demers, D. R.

AU - Den Hartog, D. J.

AU - Deng, B.

AU - Ding, W. X.

AU - Ebrahimi, F.

AU - Ennis, D.

AU - Fiksel, G.

AU - Fitzpatrick, R.

AU - Foust, C.

AU - Forest, C. B.

AU - Franz, P.

AU - Frassinetti, L.

AU - Goetz, J.

AU - Holly, D.

AU - Hudson, B.

AU - Kaufman, M.

AU - Lovell, T.

AU - Marrelli, L.

AU - Martin, P.

AU - McCollam, K.

AU - Mirnov, V. V.

AU - Nonn, P.

AU - O'Connell, R.

AU - Oliva, S.

AU - Piovesan, P.

AU - Predebon, I.

AU - Sarff, J. S.

AU - Spizzo, G.

AU - Svidzinski, V.

AU - Thomas, M.

AU - Uchimoto, E.

AU - White, R.

AU - Wyman, M.

PY - 2005/10/1

Y1 - 2005/10/1

N2 - Confinement in the reversed field pinch (RFP) has been shown to increase strongly with current profile control. The MST RFP can operate in two regimes: the standard regime with a naturally occurring current density profile, robust reconnection and dynamo activity; and the improved confinement regime with strong reduction in reconnection, dynamo and transport. New results in standard plasmas include the observation of a strong two-fluid Hall effect in reconnection and dynamo, the determination that the m ≤ 0 edge resonant mode is nonlinearly driven, and the determination that tearing modes can lock to the wall via eddy currents in the shell. New results in improved confinement plasmas include observations that such plasmas are essentially dynamo-free, contain several isolated magnetic islands (as opposed to a stochastic field) and contain reduced high frequency turbulence. Auxiliary current drive and heating is now critical to RFP research. In MST, a programme to apply auxiliary systems to the RFP is underway and progress has accrued in several techniques, including lower hybrid and electron Bernstein wave injection, ac helicity injection current drive, pellet injection and neutral beam injection.

AB - Confinement in the reversed field pinch (RFP) has been shown to increase strongly with current profile control. The MST RFP can operate in two regimes: the standard regime with a naturally occurring current density profile, robust reconnection and dynamo activity; and the improved confinement regime with strong reduction in reconnection, dynamo and transport. New results in standard plasmas include the observation of a strong two-fluid Hall effect in reconnection and dynamo, the determination that the m ≤ 0 edge resonant mode is nonlinearly driven, and the determination that tearing modes can lock to the wall via eddy currents in the shell. New results in improved confinement plasmas include observations that such plasmas are essentially dynamo-free, contain several isolated magnetic islands (as opposed to a stochastic field) and contain reduced high frequency turbulence. Auxiliary current drive and heating is now critical to RFP research. In MST, a programme to apply auxiliary systems to the RFP is underway and progress has accrued in several techniques, including lower hybrid and electron Bernstein wave injection, ac helicity injection current drive, pellet injection and neutral beam injection.

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U2 - 10.1088/0029-5515/45/10/S23

DO - 10.1088/0029-5515/45/10/S23

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AN - SCOPUS:26844582964

SN - 0029-5515

VL - 45

SP - S276-S282

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 10

ER -

Overview of results in the MST reversed field pinch experiment

Abstract

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UN SDGs

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