First results from MAST

A. Sykes; R. J. Akers; L. C. Appel; E. R. Arends; P. G. Carolan; N. J. Conway; G. F. Counsell; G. Cunningham; A. Dnestrovskij; Yu N. Dnestrovskij; A. R. Field; S. J. Fielding; M. P. Gryaznevich; S. Korsholm; E. Laird; R. Martin; M. P.S. Nightingale; C. M. Roach; M. R. Tournianski; M. J. Walsh; C. D. Warrick; H. R. Wilson; S. You

doi:10.1088/0029-5515/41/10/310

First results from MAST

A. Sykes, R. J. Akers, L. C. Appel, E. R. Arends, P. G. Carolan, N. J. Conway, G. F. Counsell, G. Cunningham, A. Dnestrovskij, Yu N. Dnestrovskij, A. R. Field, S. J. Fielding, M. P. Gryaznevich, S. Korsholm, E. Laird, R. Martin, M. P.S. Nightingale, C. M. Roach, M. R. Tournianski, M. J. WalshC. D. Warrick, H. R. Wilson, S. You

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Abstract

MAST is one of the new generation of large, purpose-built spherical tokamaks (STs) now becoming operational, designed to investigate the properties of the ST in large, collisionless plasmas. The first six months of MAST operations have been remarkably successful. Operationally, both merging-compression and the more usual solenoid induction schemes have been demonstrated, the former providing over 400 kA of plasma current with no demand on solenoid flux. Good vacuum conditions and operational conditions, particularly after boronization in trimethylated boron, have provided plasma current of over I MA with central plasma temperatures (ohmic) of order 1 keV. The Hugill and Greenwald limits can be exceeded and H mode achieved at modest additional NBI power. Moreover, particle and energy confinement show an immediate increase at the L-H transition, unlike the case of START, where this became apparent only at the highest plasma currents. Halo currents are small, with low toroidal peaking factors, in accordance with theoretical predictions, and there is evidence of a resilience to the major disruption.

Original language	English
Pages (from-to)	1423-1433
Number of pages	11
Journal	Nuclear Fusion
Volume	41
Issue number	10
DOIs	https://doi.org/10.1088/0029-5515/41/10/310
State	Published - Oct 2001
Externally published	Yes

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Sykes, A., Akers, R. J., Appel, L. C., Arends, E. R., Carolan, P. G., Conway, N. J., Counsell, G. F., Cunningham, G., Dnestrovskij, A., Dnestrovskij, Y. N., Field, A. R., Fielding, S. J., Gryaznevich, M. P., Korsholm, S., Laird, E., Martin, R., Nightingale, M. P. S., Roach, C. M., Tournianski, M. R., ... You, S. (2001). First results from MAST. Nuclear Fusion, 41(10), 1423-1433. https://doi.org/10.1088/0029-5515/41/10/310

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title = "First results from MAST",

abstract = "MAST is one of the new generation of large, purpose-built spherical tokamaks (STs) now becoming operational, designed to investigate the properties of the ST in large, collisionless plasmas. The first six months of MAST operations have been remarkably successful. Operationally, both merging-compression and the more usual solenoid induction schemes have been demonstrated, the former providing over 400 kA of plasma current with no demand on solenoid flux. Good vacuum conditions and operational conditions, particularly after boronization in trimethylated boron, have provided plasma current of over I MA with central plasma temperatures (ohmic) of order 1 keV. The Hugill and Greenwald limits can be exceeded and H mode achieved at modest additional NBI power. Moreover, particle and energy confinement show an immediate increase at the L-H transition, unlike the case of START, where this became apparent only at the highest plasma currents. Halo currents are small, with low toroidal peaking factors, in accordance with theoretical predictions, and there is evidence of a resilience to the major disruption.",

author = "A. Sykes and Akers, {R. J.} and Appel, {L. C.} and Arends, {E. R.} and Carolan, {P. G.} and Conway, {N. J.} and Counsell, {G. F.} and G. Cunningham and A. Dnestrovskij and Dnestrovskij, {Yu N.} and Field, {A. R.} and Fielding, {S. J.} and Gryaznevich, {M. P.} and S. Korsholm and E. Laird and R. Martin and Nightingale, {M. P.S.} and Roach, {C. M.} and Tournianski, {M. R.} and Walsh, {M. J.} and Warrick, {C. D.} and Wilson, {H. R.} and S. You",

year = "2001",

month = oct,

doi = "10.1088/0029-5515/41/10/310",

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Sykes, A, Akers, RJ, Appel, LC, Arends, ER, Carolan, PG, Conway, NJ, Counsell, GF, Cunningham, G, Dnestrovskij, A, Dnestrovskij, YN, Field, AR, Fielding, SJ, Gryaznevich, MP, Korsholm, S, Laird, E, Martin, R, Nightingale, MPS, Roach, CM, Tournianski, MR, Walsh, MJ, Warrick, CD, Wilson, HR & You, S 2001, 'First results from MAST', Nuclear Fusion, vol. 41, no. 10, pp. 1423-1433. https://doi.org/10.1088/0029-5515/41/10/310

TY - JOUR

T1 - First results from MAST

AU - Sykes, A.

AU - Akers, R. J.

AU - Appel, L. C.

AU - Arends, E. R.

AU - Carolan, P. G.

AU - Conway, N. J.

AU - Counsell, G. F.

AU - Cunningham, G.

AU - Dnestrovskij, A.

AU - Dnestrovskij, Yu N.

AU - Field, A. R.

AU - Fielding, S. J.

AU - Gryaznevich, M. P.

AU - Korsholm, S.

AU - Laird, E.

AU - Martin, R.

AU - Nightingale, M. P.S.

AU - Roach, C. M.

AU - Tournianski, M. R.

AU - Walsh, M. J.

AU - Warrick, C. D.

AU - Wilson, H. R.

AU - You, S.

PY - 2001/10

Y1 - 2001/10

N2 - MAST is one of the new generation of large, purpose-built spherical tokamaks (STs) now becoming operational, designed to investigate the properties of the ST in large, collisionless plasmas. The first six months of MAST operations have been remarkably successful. Operationally, both merging-compression and the more usual solenoid induction schemes have been demonstrated, the former providing over 400 kA of plasma current with no demand on solenoid flux. Good vacuum conditions and operational conditions, particularly after boronization in trimethylated boron, have provided plasma current of over I MA with central plasma temperatures (ohmic) of order 1 keV. The Hugill and Greenwald limits can be exceeded and H mode achieved at modest additional NBI power. Moreover, particle and energy confinement show an immediate increase at the L-H transition, unlike the case of START, where this became apparent only at the highest plasma currents. Halo currents are small, with low toroidal peaking factors, in accordance with theoretical predictions, and there is evidence of a resilience to the major disruption.

AB - MAST is one of the new generation of large, purpose-built spherical tokamaks (STs) now becoming operational, designed to investigate the properties of the ST in large, collisionless plasmas. The first six months of MAST operations have been remarkably successful. Operationally, both merging-compression and the more usual solenoid induction schemes have been demonstrated, the former providing over 400 kA of plasma current with no demand on solenoid flux. Good vacuum conditions and operational conditions, particularly after boronization in trimethylated boron, have provided plasma current of over I MA with central plasma temperatures (ohmic) of order 1 keV. The Hugill and Greenwald limits can be exceeded and H mode achieved at modest additional NBI power. Moreover, particle and energy confinement show an immediate increase at the L-H transition, unlike the case of START, where this became apparent only at the highest plasma currents. Halo currents are small, with low toroidal peaking factors, in accordance with theoretical predictions, and there is evidence of a resilience to the major disruption.

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U2 - 10.1088/0029-5515/41/10/310

DO - 10.1088/0029-5515/41/10/310

M3 - Article

AN - SCOPUS:0035494847

SN - 0029-5515

VL - 41

SP - 1423

EP - 1433

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 10

ER -

First results from MAST

Abstract

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