Comparison of steady-state and perturbative transport coefficients in TFTR

P. C. Efthimion; C. W. Barnes; M. G. Bell; H. Biglari; N. Bretz; P. H. Diamond; G. Hammett; W. Heidbrink; R. Hulse; D. Johnson; Y. Kusama; D. Mansfield; S. S. Medley; R. Nazikian; H. Park; A. Ramsey; G. Rewoldt; S. D. Scott; B. C. Stratton; E. Synakowski; W. M. Tang; G. Taylor; M. C. Zarnstorff; S. J. Zweben

doi:10.1063/1.859598

Comparison of steady-state and perturbative transport coefficients in TFTR

P. C. Efthimion
, C. W. Barnes
, M. G. Bell
, H. Biglari
, N. Bretz
, P. H. Diamond
, G. Hammett
, W. Heidbrink
, R. Hulse
, D. Johnson
, Y. Kusama
, D. Mansfield
, S. S. Medley
, R. Nazikian
, H. Park
, A. Ramsey
, G. Rewoldt
, S. D. Scott
, B. C. Stratton
, E. Synakowski

W. M. Tang, G. Taylor, M. C. Zarnstorff, S. J. Zweben

Department of Physics

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

26 Scopus citations

Abstract

Steady-state and perturbative transport analysis are complementary techniques for the study of transport in tokamaks. These techniques are applied to the investigation of auxiliary-heated L-mode and supershot plasmas in the tokamak fusion test reactor (TFTR) [R. J. Hawryluk et al., Plasma Physics and Controlled Nuclear Fusion Research, Proceedings of the 11th International Conference, Kyoto, 1986 (IAEA, Vienna, 1987), Vol. 1, p. 51.]. In the L mode, both steady-state and perturbative transport measurements reveal a strong temperature dependence that is consistent with electrostatic microinstability theory and the degradation of confinement with neutral beam power. Steady-state analysis of the ion heat and momentum balance in supershots indicates a reduction and a significant weakening of the power-law dependence on the transport in the center of the discharge.

Original language	English
Pages (from-to)	2315-2323
Number of pages	9
Journal	Physics of Fluids B
Volume	3
Issue number	8
DOIs	https://doi.org/10.1063/1.859598
State	Published - 1991

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Efthimion, P. C., Barnes, C. W., Bell, M. G., Biglari, H., Bretz, N., Diamond, P. H., Hammett, G., Heidbrink, W., Hulse, R., Johnson, D., Kusama, Y., Mansfield, D., Medley, S. S., Nazikian, R., Park, H., Ramsey, A., Rewoldt, G., Scott, S. D., Stratton, B. C., ... Zweben, S. J. (1991). Comparison of steady-state and perturbative transport coefficients in TFTR. Physics of Fluids B, 3(8), 2315-2323. https://doi.org/10.1063/1.859598

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title = "Comparison of steady-state and perturbative transport coefficients in TFTR",

abstract = "Steady-state and perturbative transport analysis are complementary techniques for the study of transport in tokamaks. These techniques are applied to the investigation of auxiliary-heated L-mode and supershot plasmas in the tokamak fusion test reactor (TFTR) [R. J. Hawryluk et al., Plasma Physics and Controlled Nuclear Fusion Research, Proceedings of the 11th International Conference, Kyoto, 1986 (IAEA, Vienna, 1987), Vol. 1, p. 51.]. In the L mode, both steady-state and perturbative transport measurements reveal a strong temperature dependence that is consistent with electrostatic microinstability theory and the degradation of confinement with neutral beam power. Steady-state analysis of the ion heat and momentum balance in supershots indicates a reduction and a significant weakening of the power-law dependence on the transport in the center of the discharge.",

author = "Efthimion, \{P. C.\} and Barnes, \{C. W.\} and Bell, \{M. G.\} and H. Biglari and N. Bretz and Diamond, \{P. H.\} and G. Hammett and W. Heidbrink and R. Hulse and D. Johnson and Y. Kusama and D. Mansfield and Medley, \{S. S.\} and R. Nazikian and H. Park and A. Ramsey and G. Rewoldt and Scott, \{S. D.\} and Stratton, \{B. C.\} and E. Synakowski and Tang, \{W. M.\} and G. Taylor and Zarnstorff, \{M. C.\} and Zweben, \{S. J.\}",

year = "1991",

doi = "10.1063/1.859598",

language = "English",

volume = "3",

pages = "2315--2323",

number = "8",

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Efthimion, PC, Barnes, CW, Bell, MG, Biglari, H, Bretz, N, Diamond, PH, Hammett, G, Heidbrink, W, Hulse, R, Johnson, D, Kusama, Y, Mansfield, D, Medley, SS, Nazikian, R, Park, H, Ramsey, A, Rewoldt, G, Scott, SD, Stratton, BC, Synakowski, E, Tang, WM, Taylor, G, Zarnstorff, MC & Zweben, SJ 1991, 'Comparison of steady-state and perturbative transport coefficients in TFTR', Physics of Fluids B, vol. 3, no. 8, pp. 2315-2323. https://doi.org/10.1063/1.859598

TY - JOUR

T1 - Comparison of steady-state and perturbative transport coefficients in TFTR

AU - Efthimion, P. C.

AU - Barnes, C. W.

AU - Bell, M. G.

AU - Biglari, H.

AU - Bretz, N.

AU - Diamond, P. H.

AU - Hammett, G.

AU - Heidbrink, W.

AU - Hulse, R.

AU - Johnson, D.

AU - Kusama, Y.

AU - Mansfield, D.

AU - Medley, S. S.

AU - Nazikian, R.

AU - Park, H.

AU - Ramsey, A.

AU - Rewoldt, G.

AU - Scott, S. D.

AU - Stratton, B. C.

AU - Synakowski, E.

AU - Tang, W. M.

AU - Taylor, G.

AU - Zarnstorff, M. C.

AU - Zweben, S. J.

PY - 1991

Y1 - 1991

N2 - Steady-state and perturbative transport analysis are complementary techniques for the study of transport in tokamaks. These techniques are applied to the investigation of auxiliary-heated L-mode and supershot plasmas in the tokamak fusion test reactor (TFTR) [R. J. Hawryluk et al., Plasma Physics and Controlled Nuclear Fusion Research, Proceedings of the 11th International Conference, Kyoto, 1986 (IAEA, Vienna, 1987), Vol. 1, p. 51.]. In the L mode, both steady-state and perturbative transport measurements reveal a strong temperature dependence that is consistent with electrostatic microinstability theory and the degradation of confinement with neutral beam power. Steady-state analysis of the ion heat and momentum balance in supershots indicates a reduction and a significant weakening of the power-law dependence on the transport in the center of the discharge.

AB - Steady-state and perturbative transport analysis are complementary techniques for the study of transport in tokamaks. These techniques are applied to the investigation of auxiliary-heated L-mode and supershot plasmas in the tokamak fusion test reactor (TFTR) [R. J. Hawryluk et al., Plasma Physics and Controlled Nuclear Fusion Research, Proceedings of the 11th International Conference, Kyoto, 1986 (IAEA, Vienna, 1987), Vol. 1, p. 51.]. In the L mode, both steady-state and perturbative transport measurements reveal a strong temperature dependence that is consistent with electrostatic microinstability theory and the degradation of confinement with neutral beam power. Steady-state analysis of the ion heat and momentum balance in supershots indicates a reduction and a significant weakening of the power-law dependence on the transport in the center of the discharge.

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DO - 10.1063/1.859598

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SN - 0899-8221

VL - 3

SP - 2315

EP - 2323

JO - Physics of Fluids B

JF - Physics of Fluids B

IS - 8

ER -

Comparison of steady-state and perturbative transport coefficients in TFTR

Abstract

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