High-β performance of the START spherical tokamak

A. Sykes; R. Akers; L. Appel; P. G. Carolan; N. J. Conway; M. Cox; A. R. Field; D. A. Gates; S. Gee; M. Gryaznevich; T. C. Hender; I. Jenkins; R. Martin; K. Morel; A. W. Morris; M. P.S. Nightingale; C. Ribeiro; D. C. Robinson; M. Tournianski; M. Valovic; M. J. Walsh; C. Warrick

doi:10.1088/0741-3335/39/12B/019

High-β performance of the START spherical tokamak

A. Sykes
, R. Akers
, L. Appel
, P. G. Carolan
, N. J. Conway
, M. Cox
, A. R. Field
, D. A. Gates
, S. Gee
, M. Gryaznevich
, T. C. Hender
, I. Jenkins
, R. Martin
, K. Morel
, A. W. Morris
, M. P.S. Nightingale
, C. Ribeiro
, D. C. Robinson
, M. Tournianski
, M. Valovic

M. J. Walsh, C. Warrick

PPPL Advanced Projects

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

53 Scopus citations

Abstract

Using additional heating provided by neutral-beam injection, the START spherical tokamak at UKAEA Fusion Culham has achieved high-β (ratio of volume average plasma pressure to vacuum magnetic-field pressure) values of β_T ≥ 30%, more than twice the value previously obtained in a tokamak. These plasmas reach normalized beta values of β_N = β%/(I/aB) ∼ 4 at values of auxiliary heating power comparable to the ohmic power. Operation at high normalized current I_N = I_p/aB_T ∼ 8 is observed, so that the plasma current exceeds the central rod toroidal-field current for the first time in a hot tokamak.

Original language	English (US)
Pages (from-to)	B247-B260
Journal	Plasma Physics and Controlled Fusion
Volume	39
Issue number	12B
DOIs	https://doi.org/10.1088/0741-3335/39/12B/019
State	Published - 1997

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

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10.1088/0741-3335/39/12B/019

Cite this

Sykes, A., Akers, R., Appel, L., Carolan, P. G., Conway, N. J., Cox, M., Field, A. R., Gates, D. A., Gee, S., Gryaznevich, M., Hender, T. C., Jenkins, I., Martin, R., Morel, K., Morris, A. W., Nightingale, M. P. S., Ribeiro, C., Robinson, D. C., Tournianski, M., ... Warrick, C. (1997). High-β performance of the START spherical tokamak. Plasma Physics and Controlled Fusion, 39(12B), B247-B260. https://doi.org/10.1088/0741-3335/39/12B/019

@article{c56646fb86604b6a9ada695540119029,

title = "High-β performance of the START spherical tokamak",

abstract = "Using additional heating provided by neutral-beam injection, the START spherical tokamak at UKAEA Fusion Culham has achieved high-β (ratio of volume average plasma pressure to vacuum magnetic-field pressure) values of βT ≥ 30\%, more than twice the value previously obtained in a tokamak. These plasmas reach normalized beta values of βN = β\%/(I/aB) ∼ 4 at values of auxiliary heating power comparable to the ohmic power. Operation at high normalized current IN = Ip/aBT ∼ 8 is observed, so that the plasma current exceeds the central rod toroidal-field current for the first time in a hot tokamak.",

author = "A. Sykes and R. Akers and L. Appel and Carolan, \{P. G.\} and Conway, \{N. J.\} and M. Cox and Field, \{A. R.\} and Gates, \{D. A.\} and S. Gee and M. Gryaznevich and Hender, \{T. C.\} and I. Jenkins and R. Martin and K. Morel and Morris, \{A. W.\} and Nightingale, \{M. P.S.\} and C. Ribeiro and Robinson, \{D. C.\} and M. Tournianski and M. Valovic and Walsh, \{M. J.\} and C. Warrick",

year = "1997",

doi = "10.1088/0741-3335/39/12B/019",

language = "English (US)",

volume = "39",

pages = "B247--B260",

journal = "Plasma Physics and Controlled Fusion",

issn = "0741-3335",

publisher = "IOP Publishing Ltd.",

number = "12B",

}

Sykes, A, Akers, R, Appel, L, Carolan, PG, Conway, NJ, Cox, M, Field, AR, Gates, DA, Gee, S, Gryaznevich, M, Hender, TC, Jenkins, I, Martin, R, Morel, K, Morris, AW, Nightingale, MPS, Ribeiro, C, Robinson, DC, Tournianski, M, Valovic, M, Walsh, MJ & Warrick, C 1997, 'High-β performance of the START spherical tokamak', Plasma Physics and Controlled Fusion, vol. 39, no. 12B, pp. B247-B260. https://doi.org/10.1088/0741-3335/39/12B/019

TY - JOUR

T1 - High-β performance of the START spherical tokamak

AU - Sykes, A.

AU - Akers, R.

AU - Appel, L.

AU - Carolan, P. G.

AU - Conway, N. J.

AU - Cox, M.

AU - Field, A. R.

AU - Gates, D. A.

AU - Gee, S.

AU - Gryaznevich, M.

AU - Hender, T. C.

AU - Jenkins, I.

AU - Martin, R.

AU - Morel, K.

AU - Morris, A. W.

AU - Nightingale, M. P.S.

AU - Ribeiro, C.

AU - Robinson, D. C.

AU - Tournianski, M.

AU - Valovic, M.

AU - Walsh, M. J.

AU - Warrick, C.

PY - 1997

Y1 - 1997

N2 - Using additional heating provided by neutral-beam injection, the START spherical tokamak at UKAEA Fusion Culham has achieved high-β (ratio of volume average plasma pressure to vacuum magnetic-field pressure) values of βT ≥ 30%, more than twice the value previously obtained in a tokamak. These plasmas reach normalized beta values of βN = β%/(I/aB) ∼ 4 at values of auxiliary heating power comparable to the ohmic power. Operation at high normalized current IN = Ip/aBT ∼ 8 is observed, so that the plasma current exceeds the central rod toroidal-field current for the first time in a hot tokamak.

AB - Using additional heating provided by neutral-beam injection, the START spherical tokamak at UKAEA Fusion Culham has achieved high-β (ratio of volume average plasma pressure to vacuum magnetic-field pressure) values of βT ≥ 30%, more than twice the value previously obtained in a tokamak. These plasmas reach normalized beta values of βN = β%/(I/aB) ∼ 4 at values of auxiliary heating power comparable to the ohmic power. Operation at high normalized current IN = Ip/aBT ∼ 8 is observed, so that the plasma current exceeds the central rod toroidal-field current for the first time in a hot tokamak.

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DO - 10.1088/0741-3335/39/12B/019

M3 - Article

AN - SCOPUS:0031342748

SN - 0741-3335

VL - 39

SP - B247-B260

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 12B

ER -

High-β performance of the START spherical tokamak

Abstract

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