Effects of magnetic geometry, fluctuations, and electric fields on confinement in the Advanced Toroidal Facility

R. C. Isler; S. Aceto; L. R. Baylor; T. S. Bigelow; G. L. Bell; J. D. Bell; B. A. Carreras; R. J. Colchin; E. C. Crume; N. Dominguez; R. A. Dory; J. L. Dunlap; G. R. Dyer; A. C. England; R. F. Gandy; J. C. Glowienka; G. R. Hanson; J. H. Harris; S. Hiroe; L. D. Horton; T. C. Jernigan; H. Ji; R. A. Langley; D. K. Lee; K. M. Likin; J. F. Lyon; C. H. Ma; S. Morimoto; M. Murakami; H. Okada; A. L. Qualls; D. A. Rasmussen; J. A. Rome; M. Sato; J. G. Schwelberger; M. G. Shats; J. E. Simpkins; C. E. Thomas; T. Uckan; M. R. Wade; J. B. Wilgen; W. R. Wing; H. Yamada; J. J. Zielinski

doi:10.1063/1.860018

Effects of magnetic geometry, fluctuations, and electric fields on confinement in the Advanced Toroidal Facility

R. C. Isler, S. Aceto, L. R. Baylor, T. S. Bigelow, G. L. Bell, J. D. Bell, B. A. Carreras, R. J. Colchin, E. C. Crume, N. Dominguez, R. A. Dory, J. L. Dunlap, G. R. Dyer, A. C. England, R. F. Gandy, J. C. Glowienka, G. R. Hanson, J. H. Harris, S. Hiroe, L. D. HortonT. C. Jernigan, H. Ji, R. A. Langley, D. K. Lee, K. M. Likin, J. F. Lyon, C. H. Ma, S. Morimoto, M. Murakami, H. Okada, A. L. Qualls, D. A. Rasmussen, J. A. Rome, M. Sato, J. G. Schwelberger, M. G. Shats, J. E. Simpkins, C. E. Thomas, T. Uckan, M. R. Wade, J. B. Wilgen, W. R. Wing, H. Yamada, J. J. Zielinski

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Abstract

Recent experiments in the Advanced Toroidal Facility (ATF) [Fusion Technol. 10, 179 (1986)] have been directed toward investigations of the basic physics mechanisms that control confinement in this device. Measurements of the density fluctuations throughout the plasma volume have provided indications for the existence of theoretically predicted dissipative trapped electron and resistive interchange instabilities. These identifications are supported by results of dynamic configuration scans of the magnetic fields during which the magnetic well volume, shear, and fraction of confined trapped particles are changed continuously. The influence of magnetic islands on the global confinement has been studied by deliberately applying error fields which strongly perturb the nested flux-surface geometry, and the effects of electric fields have been investigated by means of biased limiter experiments.

Original language	English
Pages (from-to)	2104-2110
Number of pages	7
Journal	Physics of Fluids B
Volume	4
Issue number	7
DOIs	https://doi.org/10.1063/1.860018
State	Published - 1992

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Isler, R. C., Aceto, S., Baylor, L. R., Bigelow, T. S., Bell, G. L., Bell, J. D., Carreras, B. A., Colchin, R. J., Crume, E. C., Dominguez, N., Dory, R. A., Dunlap, J. L., Dyer, G. R., England, A. C., Gandy, R. F., Glowienka, J. C., Hanson, G. R., Harris, J. H., Hiroe, S., ... Zielinski, J. J. (1992). Effects of magnetic geometry, fluctuations, and electric fields on confinement in the Advanced Toroidal Facility. Physics of Fluids B, 4(7), 2104-2110. https://doi.org/10.1063/1.860018

@article{d9ebce1ef38c4638a0223cad9a2f1413,

title = "Effects of magnetic geometry, fluctuations, and electric fields on confinement in the Advanced Toroidal Facility",

abstract = "Recent experiments in the Advanced Toroidal Facility (ATF) [Fusion Technol. 10, 179 (1986)] have been directed toward investigations of the basic physics mechanisms that control confinement in this device. Measurements of the density fluctuations throughout the plasma volume have provided indications for the existence of theoretically predicted dissipative trapped electron and resistive interchange instabilities. These identifications are supported by results of dynamic configuration scans of the magnetic fields during which the magnetic well volume, shear, and fraction of confined trapped particles are changed continuously. The influence of magnetic islands on the global confinement has been studied by deliberately applying error fields which strongly perturb the nested flux-surface geometry, and the effects of electric fields have been investigated by means of biased limiter experiments.",

author = "Isler, \{R. C.\} and S. Aceto and Baylor, \{L. R.\} and Bigelow, \{T. S.\} and Bell, \{G. L.\} and Bell, \{J. D.\} and Carreras, \{B. A.\} and Colchin, \{R. J.\} and Crume, \{E. C.\} and N. Dominguez and Dory, \{R. A.\} and Dunlap, \{J. L.\} and Dyer, \{G. R.\} and England, \{A. C.\} and Gandy, \{R. F.\} and Glowienka, \{J. C.\} and Hanson, \{G. R.\} and Harris, \{J. H.\} and S. Hiroe and Horton, \{L. D.\} and Jernigan, \{T. C.\} and H. Ji and Langley, \{R. A.\} and Lee, \{D. K.\} and Likin, \{K. M.\} and Lyon, \{J. F.\} and Ma, \{C. H.\} and S. Morimoto and M. Murakami and H. Okada and Qualls, \{A. L.\} and Rasmussen, \{D. A.\} and Rome, \{J. A.\} and M. Sato and Schwelberger, \{J. G.\} and Shats, \{M. G.\} and Simpkins, \{J. E.\} and Thomas, \{C. E.\} and T. Uckan and Wade, \{M. R.\} and Wilgen, \{J. B.\} and Wing, \{W. R.\} and H. Yamada and Zielinski, \{J. J.\}",

year = "1992",

doi = "10.1063/1.860018",

language = "English",

volume = "4",

pages = "2104--2110",

journal = "Physics of Fluids B",

issn = "0899-8221",

number = "7",

}

Isler, RC, Aceto, S, Baylor, LR , Bigelow, TS, Bell, GL, Bell, JD, Carreras, BA, Colchin, RJ, Crume, EC, Dominguez, N, Dory, RA, Dunlap, JL, Dyer, GR, England, AC, Gandy, RF, Glowienka, JC, Hanson, GR, Harris, JH, Hiroe, S, Horton, LD, Jernigan, TC, Ji, H, Langley, RA, Lee, DK, Likin, KM, Lyon, JF, Ma, CH, Morimoto, S, Murakami, M, Okada, H, Qualls, AL, Rasmussen, DA, Rome, JA, Sato, M, Schwelberger, JG, Shats, MG, Simpkins, JE, Thomas, CE, Uckan, T, Wade, MR, Wilgen, JB, Wing, WR, Yamada, H & Zielinski, JJ 1992, 'Effects of magnetic geometry, fluctuations, and electric fields on confinement in the Advanced Toroidal Facility', Physics of Fluids B, vol. 4, no. 7, pp. 2104-2110. https://doi.org/10.1063/1.860018

TY - JOUR

T1 - Effects of magnetic geometry, fluctuations, and electric fields on confinement in the Advanced Toroidal Facility

AU - Isler, R. C.

AU - Aceto, S.

AU - Baylor, L. R.

AU - Bigelow, T. S.

AU - Bell, G. L.

AU - Bell, J. D.

AU - Carreras, B. A.

AU - Colchin, R. J.

AU - Crume, E. C.

AU - Dominguez, N.

AU - Dory, R. A.

AU - Dunlap, J. L.

AU - Dyer, G. R.

AU - England, A. C.

AU - Gandy, R. F.

AU - Glowienka, J. C.

AU - Hanson, G. R.

AU - Harris, J. H.

AU - Hiroe, S.

AU - Horton, L. D.

AU - Jernigan, T. C.

AU - Ji, H.

AU - Langley, R. A.

AU - Lee, D. K.

AU - Likin, K. M.

AU - Lyon, J. F.

AU - Ma, C. H.

AU - Morimoto, S.

AU - Murakami, M.

AU - Okada, H.

AU - Qualls, A. L.

AU - Rasmussen, D. A.

AU - Rome, J. A.

AU - Sato, M.

AU - Schwelberger, J. G.

AU - Shats, M. G.

AU - Simpkins, J. E.

AU - Thomas, C. E.

AU - Uckan, T.

AU - Wade, M. R.

AU - Wilgen, J. B.

AU - Wing, W. R.

AU - Yamada, H.

AU - Zielinski, J. J.

PY - 1992

Y1 - 1992

N2 - Recent experiments in the Advanced Toroidal Facility (ATF) [Fusion Technol. 10, 179 (1986)] have been directed toward investigations of the basic physics mechanisms that control confinement in this device. Measurements of the density fluctuations throughout the plasma volume have provided indications for the existence of theoretically predicted dissipative trapped electron and resistive interchange instabilities. These identifications are supported by results of dynamic configuration scans of the magnetic fields during which the magnetic well volume, shear, and fraction of confined trapped particles are changed continuously. The influence of magnetic islands on the global confinement has been studied by deliberately applying error fields which strongly perturb the nested flux-surface geometry, and the effects of electric fields have been investigated by means of biased limiter experiments.

AB - Recent experiments in the Advanced Toroidal Facility (ATF) [Fusion Technol. 10, 179 (1986)] have been directed toward investigations of the basic physics mechanisms that control confinement in this device. Measurements of the density fluctuations throughout the plasma volume have provided indications for the existence of theoretically predicted dissipative trapped electron and resistive interchange instabilities. These identifications are supported by results of dynamic configuration scans of the magnetic fields during which the magnetic well volume, shear, and fraction of confined trapped particles are changed continuously. The influence of magnetic islands on the global confinement has been studied by deliberately applying error fields which strongly perturb the nested flux-surface geometry, and the effects of electric fields have been investigated by means of biased limiter experiments.

UR - http://www.scopus.com/inward/record.url?scp=0001750381&partnerID=8YFLogxK

U2 - 10.1063/1.860018

DO - 10.1063/1.860018

M3 - Article

AN - SCOPUS:0001750381

SN - 0899-8221

VL - 4

SP - 2104

EP - 2110

JO - Physics of Fluids B

JF - Physics of Fluids B

IS - 7

ER -

Effects of magnetic geometry, fluctuations, and electric fields on confinement in the Advanced Toroidal Facility

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