Effect of low magnetic shear induced by lower hybrid current drive on high performance internal transport barriers in the Joint European Torus (JET)

C. Castaldo; R. Cesario; A. Cardinali; X. Litaudon; Tuomas Tala; F. Crisanti; C. Cormezano; L. Panaccione; F. Santini; P. Smeulders; A. Tuccillo; JET-EFDA contributors

doi:10.1063/1.1488951

Effect of low magnetic shear induced by lower hybrid current drive on high performance internal transport barriers in the Joint European Torus (JET)

C. Castaldo, R. Cesario, A. Cardinali, X. Litaudon, Tuomas Tala, F. Crisanti, C. Cormezano, L. Panaccione, F. Santini, P. Smeulders, A. Tuccillo, JET-EFDA contributors

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

30 Citations (Scopus)

Abstract

A low/negative magnetic shear profile is maintained in the Joint European Torus in a plasma target with plasma current of 2.4 MA using 2.2 MW of lower hybrid (LH) power combined with neutral beam injection and ion cyclotron radiofrequency heating. In this scenario, an internal transport barrier (ITB) with time duration up to about 4 s is produced. The fraction of LH driven current is about 25% the total plasma current. During LH power application, the layer with reversed shear q-profile can be maintained in a suitable radial position to inhibit the onset of turbulence, which might otherwise drive the ITB to collapse. LH power could be used as a tool to drive moderate amounts of noninductive off-axis current and sustain high performance ITBs at high plasma current.

Original language	English
Pages (from-to)	3205-3208
Journal	Physics of Plasmas
Volume	9
Issue number	8
DOIs	https://doi.org/10.1063/1.1488951
Publication status	Published - 2002
MoE publication type	A1 Journal article-refereed

Keywords

Tokamak devices
Tokamak
JET
plasma
plasma toroidal confinement
plasma transport processes
plasma hybrid waves
plasma beam injection heating
plasma radiofrequency heating
plasma turbulence

UN SDGs

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

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10.1063/1.1488951

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Castaldo, C., Cesario, R., Cardinali, A., Litaudon, X., Tala, T., Crisanti, F., Cormezano, C., Panaccione, L., Santini, F., Smeulders, P., Tuccillo, A., & JET-EFDA contributors (2002). Effect of low magnetic shear induced by lower hybrid current drive on high performance internal transport barriers in the Joint European Torus (JET). Physics of Plasmas, 9(8), 3205-3208. https://doi.org/10.1063/1.1488951

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title = "Effect of low magnetic shear induced by lower hybrid current drive on high performance internal transport barriers in the Joint European Torus (JET)",

abstract = "A low/negative magnetic shear profile is maintained in the Joint European Torus in a plasma target with plasma current of 2.4 MA using 2.2 MW of lower hybrid (LH) power combined with neutral beam injection and ion cyclotron radiofrequency heating. In this scenario, an internal transport barrier (ITB) with time duration up to about 4 s is produced. The fraction of LH driven current is about 25% the total plasma current. During LH power application, the layer with reversed shear q-profile can be maintained in a suitable radial position to inhibit the onset of turbulence, which might otherwise drive the ITB to collapse. LH power could be used as a tool to drive moderate amounts of noninductive off-axis current and sustain high performance ITBs at high plasma current.",

keywords = "Tokamak devices, Tokamak, JET, plasma, plasma toroidal confinement, plasma transport processes, plasma hybrid waves, plasma beam injection heating, plasma radiofrequency heating, plasma turbulence",

author = "C. Castaldo and R. Cesario and A. Cardinali and X. Litaudon and Tuomas Tala and F. Crisanti and C. Cormezano and L. Panaccione and F. Santini and P. Smeulders and A. Tuccillo and {JET-EFDA contributors}",

year = "2002",

doi = "10.1063/1.1488951",

language = "English",

volume = "9",

pages = "3205--3208",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics (AIP)",

number = "8",

}

Castaldo, C, Cesario, R, Cardinali, A, Litaudon, X, Tala, T, Crisanti, F, Cormezano, C, Panaccione, L, Santini, F, Smeulders, P, Tuccillo, A & JET-EFDA contributors 2002, 'Effect of low magnetic shear induced by lower hybrid current drive on high performance internal transport barriers in the Joint European Torus (JET)', Physics of Plasmas, vol. 9, no. 8, pp. 3205-3208. https://doi.org/10.1063/1.1488951

TY - JOUR

T1 - Effect of low magnetic shear induced by lower hybrid current drive on high performance internal transport barriers in the Joint European Torus (JET)

AU - Castaldo, C.

AU - Cesario, R.

AU - Cardinali, A.

AU - Litaudon, X.

AU - Tala, Tuomas

AU - Crisanti, F.

AU - Cormezano, C.

AU - Panaccione, L.

AU - Santini, F.

AU - Smeulders, P.

AU - Tuccillo, A.

AU - JET-EFDA contributors

PY - 2002

Y1 - 2002

N2 - A low/negative magnetic shear profile is maintained in the Joint European Torus in a plasma target with plasma current of 2.4 MA using 2.2 MW of lower hybrid (LH) power combined with neutral beam injection and ion cyclotron radiofrequency heating. In this scenario, an internal transport barrier (ITB) with time duration up to about 4 s is produced. The fraction of LH driven current is about 25% the total plasma current. During LH power application, the layer with reversed shear q-profile can be maintained in a suitable radial position to inhibit the onset of turbulence, which might otherwise drive the ITB to collapse. LH power could be used as a tool to drive moderate amounts of noninductive off-axis current and sustain high performance ITBs at high plasma current.

AB - A low/negative magnetic shear profile is maintained in the Joint European Torus in a plasma target with plasma current of 2.4 MA using 2.2 MW of lower hybrid (LH) power combined with neutral beam injection and ion cyclotron radiofrequency heating. In this scenario, an internal transport barrier (ITB) with time duration up to about 4 s is produced. The fraction of LH driven current is about 25% the total plasma current. During LH power application, the layer with reversed shear q-profile can be maintained in a suitable radial position to inhibit the onset of turbulence, which might otherwise drive the ITB to collapse. LH power could be used as a tool to drive moderate amounts of noninductive off-axis current and sustain high performance ITBs at high plasma current.

KW - Tokamak devices

KW - Tokamak

KW - JET

KW - plasma

KW - plasma toroidal confinement

KW - plasma transport processes

KW - plasma hybrid waves

KW - plasma beam injection heating

KW - plasma radiofrequency heating

KW - plasma turbulence

U2 - 10.1063/1.1488951

DO - 10.1063/1.1488951

M3 - Article

SN - 1070-664X

VL - 9

SP - 3205

EP - 3208

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 8

ER -

Effect of low magnetic shear induced by lower hybrid current drive on high performance internal transport barriers in the Joint European Torus (JET)

Abstract

Keywords

UN SDGs

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