Recent improvements in confinement and beta in the MST reversed-field pinch

D. J. Den Hartog; J. W. Ahn; A. F. Almagri; J. K. Anderson; A. D. Beklemishev; A. P. Blair; F. Bonomo; M. T. Borchardt; D. L. Brower; D. R. Burke; M. Cengher; B. E. Chapman; S. Choi; D. J. Clayton; W. A. Cox; S. K. Combs; D. Craig; H. D. Cummings; V. I. Davydenko; D. R. Demers; B. H. Deng; W. X. Ding; F. Ebrahimi; D. A. Ennis; G. Fiksel; C. Foust; C. B. Forest; P. Franz; L. Frassinetti; S. Gangadhara; J. A. Goetz; R. W. Harvey; D. J. Holly; B. F. Hudson; A. A. Ivanov; M. C. Kaufman; A. V. Kuritsyn; A. A. Lizunov; T. W. Lovell; R. M. Magee; L. Marrelli; P. Martin; K. J. McCollam; M. C. Miller; V. V. Mirnov; P. D. Nonn; R. O'Connell; S. P. Oliva; P. Piovesan; Stewart C. Prager; I. Predebon; J. A. Reusch; J. S. Sarff; V. A. Svidzinski; T. D. Tharp; M. A. Thomas; Yu A. Tsidulko; M. D. Wyman; T. Yates

doi:10.1088/0029-5515/47/9/L01

Recent improvements in confinement and beta in the MST reversed-field pinch

D. J. Den Hartog
, J. W. Ahn
, A. F. Almagri
, J. K. Anderson
, A. D. Beklemishev
, A. P. Blair
, F. Bonomo
, M. T. Borchardt
, D. L. Brower
, D. R. Burke
, M. Cengher
, B. E. Chapman
, S. Choi
, D. J. Clayton
, W. A. Cox
, S. K. Combs
, D. Craig
, H. D. Cummings
, V. I. Davydenko
, D. R. Demers

B. H. Deng, W. X. Ding, F. Ebrahimi, D. A. Ennis, G. Fiksel, C. Foust, C. B. Forest, P. Franz, L. Frassinetti, S. Gangadhara, J. A. Goetz, R. W. Harvey, D. J. Holly, B. F. Hudson, A. A. Ivanov, M. C. Kaufman, A. V. Kuritsyn, A. A. Lizunov, T. W. Lovell, R. M. Magee, L. Marrelli, P. Martin, K. J. McCollam, M. C. Miller, V. V. Mirnov, P. D. Nonn, R. O'Connell, S. P. Oliva, P. Piovesan, Stewart C. Prager, I. Predebon, J. A. Reusch, J. S. Sarff, V. A. Svidzinski, T. D. Tharp, M. A. Thomas, Yu A. Tsidulko, M. D. Wyman, T. Yates

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

9 Scopus citations

Abstract

In the general area of confinement improvement and concept advancement, recent results in the Madison Symmetric Torus (MST) reversed-field pinch (RFP) include good confinement of both thermal and large-orbit ions and near doubling of total beta to 26% with deuterium pellet injection. Current profile control enables MST to reduce stochastic transport and achieve tokamak-like confinement. In standard RFP operation, substantial MHD tearing mode activity results in stochastic transport and an energy confinement time of about 1 ms in MST. Application of inductive current profile control reduces MHD activity and accompanying stochasticity, improving confinement by about a factor of ten. Previous work concentrated on electron confinement in improved-confinement RFP operation. Recent work confirms that ions are also well confined, and that high beta and improved confinement can be achieved simultaneously.

Original language	English (US)
Pages (from-to)	L17-L20
Journal	Nuclear Fusion
Volume	47
Issue number	9
DOIs	https://doi.org/10.1088/0029-5515/47/9/L01
State	Published - 2007

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Condensed Matter Physics

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10.1088/0029-5515/47/9/L01

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Den Hartog, D. J., Ahn, J. W., Almagri, A. F., Anderson, J. K., Beklemishev, A. D., Blair, A. P., Bonomo, F., Borchardt, M. T., Brower, D. L., Burke, D. R., Cengher, M., Chapman, B. E., Choi, S., Clayton, D. J., Cox, W. A., Combs, S. K., Craig, D., Cummings, H. D., Davydenko, V. I., ... Yates, T. (2007). Recent improvements in confinement and beta in the MST reversed-field pinch. Nuclear Fusion, 47(9), L17-L20. https://doi.org/10.1088/0029-5515/47/9/L01

@article{6673635abbed4efb946d189cfc2abc03,

title = "Recent improvements in confinement and beta in the MST reversed-field pinch",

abstract = "In the general area of confinement improvement and concept advancement, recent results in the Madison Symmetric Torus (MST) reversed-field pinch (RFP) include good confinement of both thermal and large-orbit ions and near doubling of total beta to 26\% with deuterium pellet injection. Current profile control enables MST to reduce stochastic transport and achieve tokamak-like confinement. In standard RFP operation, substantial MHD tearing mode activity results in stochastic transport and an energy confinement time of about 1 ms in MST. Application of inductive current profile control reduces MHD activity and accompanying stochasticity, improving confinement by about a factor of ten. Previous work concentrated on electron confinement in improved-confinement RFP operation. Recent work confirms that ions are also well confined, and that high beta and improved confinement can be achieved simultaneously.",

author = "\{Den Hartog\}, \{D. J.\} and Ahn, \{J. W.\} and Almagri, \{A. F.\} and Anderson, \{J. K.\} and Beklemishev, \{A. D.\} and Blair, \{A. P.\} and F. Bonomo and Borchardt, \{M. T.\} and Brower, \{D. L.\} and Burke, \{D. R.\} and M. Cengher and Chapman, \{B. E.\} and S. Choi and Clayton, \{D. J.\} and Cox, \{W. A.\} and Combs, \{S. K.\} and D. Craig and Cummings, \{H. D.\} and Davydenko, \{V. I.\} and Demers, \{D. R.\} and Deng, \{B. H.\} and Ding, \{W. X.\} and F. Ebrahimi and Ennis, \{D. A.\} and G. Fiksel and C. Foust and Forest, \{C. B.\} and P. Franz and L. Frassinetti and S. Gangadhara and Goetz, \{J. A.\} and Harvey, \{R. W.\} and Holly, \{D. J.\} and Hudson, \{B. F.\} and Ivanov, \{A. A.\} and Kaufman, \{M. C.\} and Kuritsyn, \{A. V.\} and Lizunov, \{A. A.\} and Lovell, \{T. W.\} and Magee, \{R. M.\} and L. Marrelli and P. Martin and McCollam, \{K. J.\} and Miller, \{M. C.\} and Mirnov, \{V. V.\} and Nonn, \{P. D.\} and R. O'Connell and Oliva, \{S. P.\} and P. Piovesan and Prager, \{Stewart C.\} and I. Predebon and Reusch, \{J. A.\} and Sarff, \{J. S.\} and Svidzinski, \{V. A.\} and Tharp, \{T. D.\} and Thomas, \{M. A.\} and Tsidulko, \{Yu A.\} and Wyman, \{M. D.\} and T. Yates",

year = "2007",

doi = "10.1088/0029-5515/47/9/L01",

language = "English (US)",

volume = "47",

pages = "L17--L20",

journal = "Nuclear Fusion",

issn = "0029-5515",

publisher = "IOP Publishing Ltd.",

number = "9",

}

Den Hartog, DJ, Ahn, JW, Almagri, AF, Anderson, JK, Beklemishev, AD, Blair, AP, Bonomo, F, Borchardt, MT, Brower, DL, Burke, DR, Cengher, M, Chapman, BE, Choi, S, Clayton, DJ, Cox, WA, Combs, SK, Craig, D, Cummings, HD, Davydenko, VI, Demers, DR, Deng, BH, Ding, WX, Ebrahimi, F, Ennis, DA, Fiksel, G, Foust, C, Forest, CB, Franz, P, Frassinetti, L, Gangadhara, S, Goetz, JA, Harvey, RW, Holly, DJ, Hudson, BF, Ivanov, AA, Kaufman, MC, Kuritsyn, AV, Lizunov, AA, Lovell, TW, Magee, RM, Marrelli, L, Martin, P, McCollam, KJ, Miller, MC, Mirnov, VV, Nonn, PD, O'Connell, R, Oliva, SP, Piovesan, P, Prager, SC, Predebon, I, Reusch, JA, Sarff, JS, Svidzinski, VA, Tharp, TD, Thomas, MA, Tsidulko, YA, Wyman, MD & Yates, T 2007, 'Recent improvements in confinement and beta in the MST reversed-field pinch', Nuclear Fusion, vol. 47, no. 9, pp. L17-L20. https://doi.org/10.1088/0029-5515/47/9/L01

TY - JOUR

T1 - Recent improvements in confinement and beta in the MST reversed-field pinch

AU - Den Hartog, D. J.

AU - Ahn, J. W.

AU - Almagri, A. F.

AU - Anderson, J. K.

AU - Beklemishev, A. D.

AU - Blair, A. P.

AU - Bonomo, F.

AU - Borchardt, M. T.

AU - Brower, D. L.

AU - Burke, D. R.

AU - Cengher, M.

AU - Chapman, B. E.

AU - Choi, S.

AU - Clayton, D. J.

AU - Cox, W. A.

AU - Combs, S. K.

AU - Craig, D.

AU - Cummings, H. D.

AU - Davydenko, V. I.

AU - Demers, D. R.

AU - Deng, B. H.

AU - Ding, W. X.

AU - Ebrahimi, F.

AU - Ennis, D. A.

AU - Fiksel, G.

AU - Foust, C.

AU - Forest, C. B.

AU - Franz, P.

AU - Frassinetti, L.

AU - Gangadhara, S.

AU - Goetz, J. A.

AU - Harvey, R. W.

AU - Holly, D. J.

AU - Hudson, B. F.

AU - Ivanov, A. A.

AU - Kaufman, M. C.

AU - Kuritsyn, A. V.

AU - Lizunov, A. A.

AU - Lovell, T. W.

AU - Magee, R. M.

AU - Marrelli, L.

AU - Martin, P.

AU - McCollam, K. J.

AU - Miller, M. C.

AU - Mirnov, V. V.

AU - Nonn, P. D.

AU - O'Connell, R.

AU - Oliva, S. P.

AU - Piovesan, P.

AU - Prager, Stewart C.

AU - Predebon, I.

AU - Reusch, J. A.

AU - Sarff, J. S.

AU - Svidzinski, V. A.

AU - Tharp, T. D.

AU - Thomas, M. A.

AU - Tsidulko, Yu A.

AU - Wyman, M. D.

AU - Yates, T.

PY - 2007

Y1 - 2007

N2 - In the general area of confinement improvement and concept advancement, recent results in the Madison Symmetric Torus (MST) reversed-field pinch (RFP) include good confinement of both thermal and large-orbit ions and near doubling of total beta to 26% with deuterium pellet injection. Current profile control enables MST to reduce stochastic transport and achieve tokamak-like confinement. In standard RFP operation, substantial MHD tearing mode activity results in stochastic transport and an energy confinement time of about 1 ms in MST. Application of inductive current profile control reduces MHD activity and accompanying stochasticity, improving confinement by about a factor of ten. Previous work concentrated on electron confinement in improved-confinement RFP operation. Recent work confirms that ions are also well confined, and that high beta and improved confinement can be achieved simultaneously.

AB - In the general area of confinement improvement and concept advancement, recent results in the Madison Symmetric Torus (MST) reversed-field pinch (RFP) include good confinement of both thermal and large-orbit ions and near doubling of total beta to 26% with deuterium pellet injection. Current profile control enables MST to reduce stochastic transport and achieve tokamak-like confinement. In standard RFP operation, substantial MHD tearing mode activity results in stochastic transport and an energy confinement time of about 1 ms in MST. Application of inductive current profile control reduces MHD activity and accompanying stochasticity, improving confinement by about a factor of ten. Previous work concentrated on electron confinement in improved-confinement RFP operation. Recent work confirms that ions are also well confined, and that high beta and improved confinement can be achieved simultaneously.

UR - https://www.scopus.com/pages/publications/58649119414

UR - https://www.scopus.com/pages/publications/58649119414#tab=citedBy

U2 - 10.1088/0029-5515/47/9/L01

DO - 10.1088/0029-5515/47/9/L01

M3 - Article

AN - SCOPUS:58649119414

SN - 0029-5515

VL - 47

SP - L17-L20

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 9

ER -

Recent improvements in confinement and beta in the MST reversed-field pinch

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