Internal transport barriers in optimized shear plasmas in JET

A. C.C. Sips; Y. F. Baranov; C. D. Challis; G. A. Cottrell; L. G. Eriksson; C. Gormezano; C. Gowers; C. M. Greenfield; J. C.M. De Haas; M. Von Hellermann; G. T.A. Huysmans; A. Howman; R. König; E. A. Lazarus; T. Luce; P. Nielsen; D. O'Brien; B. W. Rice; G. Sadler; F. X. Söldner; M. F. Stamp; E. J. Strait; B. J.D. Tubbing; M. Wade; D. J. Ward

doi:10.1088/0741-3335/40/5/015

Internal transport barriers in optimized shear plasmas in JET

A. C.C. Sips, Y. F. Baranov, C. D. Challis, G. A. Cottrell, L. G. Eriksson, C. Gormezano, C. Gowers, C. M. Greenfield, J. C.M. De Haas, M. Von Hellermann, G. T.A. Huysmans, A. Howman, R. König, E. A. Lazarus, T. Luce, P. Nielsen, D. O'Brien, B. W. Rice, G. Sadler, F. X. SöldnerM. F. Stamp, E. J. Strait, B. J.D. Tubbing, M. Wade, D. J. Ward

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Abstract

Experiments using high-power heating during the current ramp-up phase of the discharge have obtained the highest D-D neutron rates in JET; S_n = 5.6 × 10¹⁶ neutrons s^-1, with n_e0 ≈ 6×10¹⁹ m^-3, T_e0 ≈ 12 keV and T_i0 ≈ 26 keV. The best discharges (I_p = 3.3 MA and B_t = 3.4 tesla) have peaked pressure profiles with a transport barrier located at r/a = 0.55. The pressure peaking is limited by MHD modes and requires active input power control to achieve the best performance. Deuterium neutral beam injection into a tritium-rich target plasma has established internal transport barriers at power levels close to the lowest threshold for pure deuterium plasmas.

Original language	English
Pages (from-to)	647-652
Number of pages	6
Journal	Plasma Physics and Controlled Fusion
Volume	40
Issue number	5
DOIs	https://doi.org/10.1088/0741-3335/40/5/015
State	Published - 1998

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Sips, A. C. C., Baranov, Y. F., Challis, C. D., Cottrell, G. A., Eriksson, L. G., Gormezano, C., Gowers, C., Greenfield, C. M., De Haas, J. C. M., Von Hellermann, M., Huysmans, G. T. A., Howman, A., König, R., Lazarus, E. A., Luce, T., Nielsen, P., O'Brien, D., Rice, B. W., Sadler, G., ... Ward, D. J. (1998). Internal transport barriers in optimized shear plasmas in JET. Plasma Physics and Controlled Fusion, 40(5), 647-652. https://doi.org/10.1088/0741-3335/40/5/015

@article{4c0254a7dc0e4942b183e02673a6d44b,

title = "Internal transport barriers in optimized shear plasmas in JET",

abstract = "Experiments using high-power heating during the current ramp-up phase of the discharge have obtained the highest D-D neutron rates in JET; Sn = 5.6 × 1016 neutrons s-1, with ne0 ≈ 6×1019 m-3, Te0 ≈ 12 keV and Ti0 ≈ 26 keV. The best discharges (Ip = 3.3 MA and Bt = 3.4 tesla) have peaked pressure profiles with a transport barrier located at r/a = 0.55. The pressure peaking is limited by MHD modes and requires active input power control to achieve the best performance. Deuterium neutral beam injection into a tritium-rich target plasma has established internal transport barriers at power levels close to the lowest threshold for pure deuterium plasmas.",

author = "Sips, {A. C.C.} and Baranov, {Y. F.} and Challis, {C. D.} and Cottrell, {G. A.} and Eriksson, {L. G.} and C. Gormezano and C. Gowers and Greenfield, {C. M.} and {De Haas}, {J. C.M.} and {Von Hellermann}, M. and Huysmans, {G. T.A.} and A. Howman and R. K{\"o}nig and Lazarus, {E. A.} and T. Luce and P. Nielsen and D. O'Brien and Rice, {B. W.} and G. Sadler and S{\"o}ldner, {F. X.} and Stamp, {M. F.} and Strait, {E. J.} and Tubbing, {B. J.D.} and M. Wade and Ward, {D. J.}",

year = "1998",

doi = "10.1088/0741-3335/40/5/015",

language = "English",

volume = "40",

pages = "647--652",

journal = "Plasma Physics and Controlled Fusion",

issn = "0741-3335",

publisher = "IOP Publishing",

number = "5",

}

Sips, ACC, Baranov, YF, Challis, CD, Cottrell, GA, Eriksson, LG, Gormezano, C, Gowers, C, Greenfield, CM, De Haas, JCM, Von Hellermann, M, Huysmans, GTA, Howman, A, König, R, Lazarus, EA, Luce, T, Nielsen, P, O'Brien, D, Rice, BW, Sadler, G, Söldner, FX, Stamp, MF, Strait, EJ, Tubbing, BJD, Wade, M & Ward, DJ 1998, 'Internal transport barriers in optimized shear plasmas in JET', Plasma Physics and Controlled Fusion, vol. 40, no. 5, pp. 647-652. https://doi.org/10.1088/0741-3335/40/5/015

TY - JOUR

T1 - Internal transport barriers in optimized shear plasmas in JET

AU - Sips, A. C.C.

AU - Baranov, Y. F.

AU - Challis, C. D.

AU - Cottrell, G. A.

AU - Eriksson, L. G.

AU - Gormezano, C.

AU - Gowers, C.

AU - Greenfield, C. M.

AU - De Haas, J. C.M.

AU - Von Hellermann, M.

AU - Huysmans, G. T.A.

AU - Howman, A.

AU - König, R.

AU - Lazarus, E. A.

AU - Luce, T.

AU - Nielsen, P.

AU - O'Brien, D.

AU - Rice, B. W.

AU - Sadler, G.

AU - Söldner, F. X.

AU - Stamp, M. F.

AU - Strait, E. J.

AU - Tubbing, B. J.D.

AU - Wade, M.

AU - Ward, D. J.

PY - 1998

Y1 - 1998

N2 - Experiments using high-power heating during the current ramp-up phase of the discharge have obtained the highest D-D neutron rates in JET; Sn = 5.6 × 1016 neutrons s-1, with ne0 ≈ 6×1019 m-3, Te0 ≈ 12 keV and Ti0 ≈ 26 keV. The best discharges (Ip = 3.3 MA and Bt = 3.4 tesla) have peaked pressure profiles with a transport barrier located at r/a = 0.55. The pressure peaking is limited by MHD modes and requires active input power control to achieve the best performance. Deuterium neutral beam injection into a tritium-rich target plasma has established internal transport barriers at power levels close to the lowest threshold for pure deuterium plasmas.

AB - Experiments using high-power heating during the current ramp-up phase of the discharge have obtained the highest D-D neutron rates in JET; Sn = 5.6 × 1016 neutrons s-1, with ne0 ≈ 6×1019 m-3, Te0 ≈ 12 keV and Ti0 ≈ 26 keV. The best discharges (Ip = 3.3 MA and Bt = 3.4 tesla) have peaked pressure profiles with a transport barrier located at r/a = 0.55. The pressure peaking is limited by MHD modes and requires active input power control to achieve the best performance. Deuterium neutral beam injection into a tritium-rich target plasma has established internal transport barriers at power levels close to the lowest threshold for pure deuterium plasmas.

UR - http://www.scopus.com/inward/record.url?scp=0032074669&partnerID=8YFLogxK

U2 - 10.1088/0741-3335/40/5/015

DO - 10.1088/0741-3335/40/5/015

M3 - Article

AN - SCOPUS:0032074669

SN - 0741-3335

VL - 40

SP - 647

EP - 652

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 5

ER -

Internal transport barriers in optimized shear plasmas in JET

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