Stabilization of sawteeth with additional heating in the JET tokamak

D. J. Campbell; D. F.H. Start; J. A. Wesson; D. V. Bartlett; V. P. Bhatnagar; M. Bures; J. G. Cordey; G. A. Cottrell; P. A. Dupperex; A. W. Edwards; C. D. Challis; C. Gormezano; C. W. Gowers; R. S. Granetz; J. H. Hammen; T. Hellsten; J. Jacquinot; E. Lazzaro; P. J. Lomas; N. Lopes Cardozo; P. Mantica; J. A. Snipes; D. Stork; P. E. Stott; P. R. Thomas; E. Thompson; K. Thomsen; G. Tonetti

doi:10.1103/PhysRevLett.60.2148

Stabilization of sawteeth with additional heating in the JET tokamak

D. J. Campbell
, D. F.H. Start
, J. A. Wesson
, D. V. Bartlett
, V. P. Bhatnagar
, M. Bures
, J. G. Cordey
, G. A. Cottrell
, P. A. Dupperex
, A. W. Edwards
, C. D. Challis
, C. Gormezano
, C. W. Gowers
, R. S. Granetz
, J. H. Hammen
, T. Hellsten
, J. Jacquinot
, E. Lazzaro
, P. J. Lomas
, N. Lopes Cardozo

P. Mantica, J. A. Snipes, D. Stork, P. E. Stott, P. R. Thomas, E. Thompson, K. Thomsen, G. Tonetti

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

189 Scopus citations

Abstract

Experiments in the JET tokamak with additional heating power (ion cyclotron resonance heating and/or neutral beam injection) above 5 MW show that the plasma can undergo a transition to a new regime. In this regime, the sawtooth instability is suppressed for periods up to 1.6 s and the level of long-wavelength, coherent MHD activity is very low. An improvement in the global energy confinement time of up to 20% is observed. Possible mechanisms for the stabilization of the m=1 instability and the implications for the near-ignition regime are discussed.

Original language	English (US)
Pages (from-to)	2148-2151
Number of pages	4
Journal	Physical review letters
Volume	60
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.60.2148
State	Published - 1988
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.60.2148

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Campbell, D. J., Start, D. F. H., Wesson, J. A., Bartlett, D. V., Bhatnagar, V. P., Bures, M., Cordey, J. G., Cottrell, G. A., Dupperex, P. A., Edwards, A. W., Challis, C. D., Gormezano, C., Gowers, C. W., Granetz, R. S., Hammen, J. H., Hellsten, T., Jacquinot, J., Lazzaro, E., Lomas, P. J., ... Tonetti, G. (1988). Stabilization of sawteeth with additional heating in the JET tokamak. Physical review letters, 60(21), 2148-2151. https://doi.org/10.1103/PhysRevLett.60.2148

@article{95c5278e752d4061bfb6ff42fc6d7ea5,

title = "Stabilization of sawteeth with additional heating in the JET tokamak",

abstract = "Experiments in the JET tokamak with additional heating power (ion cyclotron resonance heating and/or neutral beam injection) above 5 MW show that the plasma can undergo a transition to a new regime. In this regime, the sawtooth instability is suppressed for periods up to 1.6 s and the level of long-wavelength, coherent MHD activity is very low. An improvement in the global energy confinement time of up to 20\% is observed. Possible mechanisms for the stabilization of the m=1 instability and the implications for the near-ignition regime are discussed.",

author = "Campbell, \{D. J.\} and Start, \{D. F.H.\} and Wesson, \{J. A.\} and Bartlett, \{D. V.\} and Bhatnagar, \{V. P.\} and M. Bures and Cordey, \{J. G.\} and Cottrell, \{G. A.\} and Dupperex, \{P. A.\} and Edwards, \{A. W.\} and Challis, \{C. D.\} and C. Gormezano and Gowers, \{C. W.\} and Granetz, \{R. S.\} and Hammen, \{J. H.\} and T. Hellsten and J. Jacquinot and E. Lazzaro and Lomas, \{P. J.\} and Cardozo, \{N. Lopes\} and P. Mantica and Snipes, \{J. A.\} and D. Stork and Stott, \{P. E.\} and Thomas, \{P. R.\} and E. Thompson and K. Thomsen and G. Tonetti",

year = "1988",

doi = "10.1103/PhysRevLett.60.2148",

language = "English (US)",

volume = "60",

pages = "2148--2151",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "21",

}

Campbell, DJ, Start, DFH, Wesson, JA, Bartlett, DV, Bhatnagar, VP, Bures, M, Cordey, JG, Cottrell, GA, Dupperex, PA, Edwards, AW, Challis, CD, Gormezano, C, Gowers, CW, Granetz, RS, Hammen, JH, Hellsten, T, Jacquinot, J, Lazzaro, E, Lomas, PJ, Cardozo, NL, Mantica, P, Snipes, JA, Stork, D, Stott, PE, Thomas, PR, Thompson, E, Thomsen, K & Tonetti, G 1988, 'Stabilization of sawteeth with additional heating in the JET tokamak', Physical review letters, vol. 60, no. 21, pp. 2148-2151. https://doi.org/10.1103/PhysRevLett.60.2148

TY - JOUR

T1 - Stabilization of sawteeth with additional heating in the JET tokamak

AU - Campbell, D. J.

AU - Start, D. F.H.

AU - Wesson, J. A.

AU - Bartlett, D. V.

AU - Bhatnagar, V. P.

AU - Bures, M.

AU - Cordey, J. G.

AU - Cottrell, G. A.

AU - Dupperex, P. A.

AU - Edwards, A. W.

AU - Challis, C. D.

AU - Gormezano, C.

AU - Gowers, C. W.

AU - Granetz, R. S.

AU - Hammen, J. H.

AU - Hellsten, T.

AU - Jacquinot, J.

AU - Lazzaro, E.

AU - Lomas, P. J.

AU - Cardozo, N. Lopes

AU - Mantica, P.

AU - Snipes, J. A.

AU - Stork, D.

AU - Stott, P. E.

AU - Thomas, P. R.

AU - Thompson, E.

AU - Thomsen, K.

AU - Tonetti, G.

PY - 1988

Y1 - 1988

N2 - Experiments in the JET tokamak with additional heating power (ion cyclotron resonance heating and/or neutral beam injection) above 5 MW show that the plasma can undergo a transition to a new regime. In this regime, the sawtooth instability is suppressed for periods up to 1.6 s and the level of long-wavelength, coherent MHD activity is very low. An improvement in the global energy confinement time of up to 20% is observed. Possible mechanisms for the stabilization of the m=1 instability and the implications for the near-ignition regime are discussed.

AB - Experiments in the JET tokamak with additional heating power (ion cyclotron resonance heating and/or neutral beam injection) above 5 MW show that the plasma can undergo a transition to a new regime. In this regime, the sawtooth instability is suppressed for periods up to 1.6 s and the level of long-wavelength, coherent MHD activity is very low. An improvement in the global energy confinement time of up to 20% is observed. Possible mechanisms for the stabilization of the m=1 instability and the implications for the near-ignition regime are discussed.

UR - https://www.scopus.com/pages/publications/4043149651

UR - https://www.scopus.com/pages/publications/4043149651#tab=citedBy

U2 - 10.1103/PhysRevLett.60.2148

DO - 10.1103/PhysRevLett.60.2148

M3 - Article

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AN - SCOPUS:4043149651

SN - 0031-9007

VL - 60

SP - 2148

EP - 2151

JO - Physical review letters

JF - Physical review letters

IS - 21

ER -

Stabilization of sawteeth with additional heating in the JET tokamak

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