First physics results from the MAST Mega-Amp Spherical Tokamak

A. Sykes; J. W. Ahn; R. Akers; E. Arends; P. G. Carolan; G. F. Counsell; S. J. Fielding; M. Gryaznevich; R. Martin; M. Price; C. Roach; V. Shevchenko; M. Tournianski; M. Valovic; M. J. Walsh; H. R. Wilson

doi:10.1063/1.1352595

First physics results from the MAST Mega-Amp Spherical Tokamak

A. Sykes, J. W. Ahn, R. Akers, E. Arends, P. G. Carolan, G. F. Counsell, S. J. Fielding, M. Gryaznevich, R. Martin, M. Price, C. Roach, V. Shevchenko, M. Tournianski, M. Valovic, M. J. Walsh, H. R. Wilson

Research output: Contribution to journal › Conference article › peer-review

67 Scopus citations

Abstract

First physics results are presented from MAST (Mega-Amp Spherical Tokamak), one of the new generation of purpose built spherical tokamaks (STs) now commencing operation. Some of these results demonstrate, for the first time, the novel effects of low aspect ratio, for example, the enhancement of resistivity due to neo-classical effects. H-mode is achieved and the transition to H-mode is accompanied by a tenfold steepening of the edge density gradient which may enable the successful application of electron Bernstein wave heating in STs. Studies of halo currents show that these less than expected from conventional tokamak results, and measurements of divertor power loading confirm that most of the power flows to the outer strike points, easing the power handling on the inner points (a critical issue for STs).

Original language	English
Pages (from-to)	2101-2106
Number of pages	6
Journal	Physics of Plasmas
Volume	8
Issue number	5 II
DOIs	https://doi.org/10.1063/1.1352595
State	Published - May 2001
Externally published	Yes
Event	42nd Annual Meeting of the APS Division of Plasma Physics - Quebec, Que, Canada Duration: Oct 23 2000 → Oct 27 2000

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title = "First physics results from the MAST Mega-Amp Spherical Tokamak",

abstract = "First physics results are presented from MAST (Mega-Amp Spherical Tokamak), one of the new generation of purpose built spherical tokamaks (STs) now commencing operation. Some of these results demonstrate, for the first time, the novel effects of low aspect ratio, for example, the enhancement of resistivity due to neo-classical effects. H-mode is achieved and the transition to H-mode is accompanied by a tenfold steepening of the edge density gradient which may enable the successful application of electron Bernstein wave heating in STs. Studies of halo currents show that these less than expected from conventional tokamak results, and measurements of divertor power loading confirm that most of the power flows to the outer strike points, easing the power handling on the inner points (a critical issue for STs).",

author = "A. Sykes and Ahn, {J. W.} and R. Akers and E. Arends and Carolan, {P. G.} and Counsell, {G. F.} and Fielding, {S. J.} and M. Gryaznevich and R. Martin and M. Price and C. Roach and V. Shevchenko and M. Tournianski and M. Valovic and Walsh, {M. J.} and Wilson, {H. R.}",

year = "2001",

month = may,

doi = "10.1063/1.1352595",

language = "English",

volume = "8",

pages = "2101--2106",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics",

number = "5 II",

note = "42nd Annual Meeting of the APS Division of Plasma Physics ; Conference date: 23-10-2000 Through 27-10-2000",

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TY - JOUR

T1 - First physics results from the MAST Mega-Amp Spherical Tokamak

AU - Sykes, A.

AU - Ahn, J. W.

AU - Akers, R.

AU - Arends, E.

AU - Carolan, P. G.

AU - Counsell, G. F.

AU - Fielding, S. J.

AU - Gryaznevich, M.

AU - Martin, R.

AU - Price, M.

AU - Roach, C.

AU - Shevchenko, V.

AU - Tournianski, M.

AU - Valovic, M.

AU - Walsh, M. J.

AU - Wilson, H. R.

PY - 2001/5

Y1 - 2001/5

N2 - First physics results are presented from MAST (Mega-Amp Spherical Tokamak), one of the new generation of purpose built spherical tokamaks (STs) now commencing operation. Some of these results demonstrate, for the first time, the novel effects of low aspect ratio, for example, the enhancement of resistivity due to neo-classical effects. H-mode is achieved and the transition to H-mode is accompanied by a tenfold steepening of the edge density gradient which may enable the successful application of electron Bernstein wave heating in STs. Studies of halo currents show that these less than expected from conventional tokamak results, and measurements of divertor power loading confirm that most of the power flows to the outer strike points, easing the power handling on the inner points (a critical issue for STs).

AB - First physics results are presented from MAST (Mega-Amp Spherical Tokamak), one of the new generation of purpose built spherical tokamaks (STs) now commencing operation. Some of these results demonstrate, for the first time, the novel effects of low aspect ratio, for example, the enhancement of resistivity due to neo-classical effects. H-mode is achieved and the transition to H-mode is accompanied by a tenfold steepening of the edge density gradient which may enable the successful application of electron Bernstein wave heating in STs. Studies of halo currents show that these less than expected from conventional tokamak results, and measurements of divertor power loading confirm that most of the power flows to the outer strike points, easing the power handling on the inner points (a critical issue for STs).

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U2 - 10.1063/1.1352595

DO - 10.1063/1.1352595

M3 - Conference article

AN - SCOPUS:6644227083

SN - 1070-664X

VL - 8

SP - 2101

EP - 2106

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 5 II

T2 - 42nd Annual Meeting of the APS Division of Plasma Physics

Y2 - 23 October 2000 through 27 October 2000

ER -

First physics results from the MAST Mega-Amp Spherical Tokamak

Abstract

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