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Overview of physics...
Overview of physics results from MAST
- Article/chapterEnglish2009
Publisher, publication year, extent ...
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2009-09-10
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IOP Publishing,2009
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:kth-32373
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-32373URI
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https://doi.org/10.1088/0029-5515/49/10/104017DOI
Supplementary language notes
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Language:English
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Summary in:English
Part of subdatabase
Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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QC 20110414
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Several improvements to the MAST plant and diagnostics have facilitated new studies advancing the physics basis for ITER and DEMO, as well as for future spherical tokamaks (STs). Using the increased heating capabilities P-NBI <= 3.8 MW H-mode at I-P = 1.2 MA was accessed showing that the energy confinement on MAST scales more weakly with I-P and more strongly with B-t than in the ITER IPB98(y, 2) scaling. Measurements of the fuel retention of shallow pellets extrapolate to an ITER particle throughput of 70% of its original designed total throughput capacity. The anomalous momentum diffusion, chi(phi), is linked to the ion diffusion, chi(i), with a Prandtl number close to P-phi approximate to chi(phi)/chi(i) approximate to 1, although chi(i) approaches neoclassical values. New high spatial resolution measurements of the edge radial electric field, E-r, show that the position of steepest gradients in electron pressure and E-r (i.e. shearing rate) are coincident, but their magnitudes are not linked. The T-e pedestal width on MAST scales with root beta(ped)(pol) rather than rho(pol). The edge localized mode (ELM) frequency for type-IV ELMs, new in MAST, was almost doubled using n = 2 resonant magnetic perturbations from a set of four external coils (n = 1, 2). A new internal 12 coil set (n <= 3) has been commissioned. The filaments in the inter-ELM and L-mode phase are different from ELM filaments, and the characteristics in L-mode agree well with turbulence calculations. A variety of fast particle driven instabilities were studied from 10 kHz saturated fishbone like activity up to 3.8 MHz compressional Alfven eigenmodes. Fast particle instabilities also affect the off-axis NBI current drive, leading to fast ion diffusion of the order of 0.5 m(2) s(-1) and a reduction in the driven current fraction from 40% to 30%. EBW current drive start-up is demonstrated for the first time in a ST generating plasma currents up to 55 kA. Many of these studies contributed to the physics basis of a planned upgrade to MAST.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
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Akers, R. J.
(author)
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Alladio, F.
(author)
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Appel, L. C.
(author)
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Axon, K. B.
(author)
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Ben Ayed, N.
(author)
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Boerner, P.
(author)
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Buttery, R. J.
(author)
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Carolan, P. G.
(author)
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Ciric, D.
(author)
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Challis, C. D.
(author)
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Chapman, I. T.
(author)
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Coyler, G.
(author)
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Connor, J. W.
(author)
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Conway, N. J.
(author)
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Cowley, S.
(author)
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Cox, M.
(author)
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Counsell, G. F.
(author)
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Cunningham, G.
(author)
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Darke, A.
(author)
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deBock, M.
(author)
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deTemmerman, G.
(author)
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Dendy, R. O.
(author)
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Dowling, J.
(author)
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Dnestrovskij, A. Yu
(author)
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Dnestrovskij, Yu. N.
(author)
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Dudson, B.
(author)
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Dunai, D.
(author)
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Dunstan, M.
(author)
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Field, A. R.
(author)
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Foster, A.
(author)
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Garzotti, L.
(author)
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Gibson, K.
(author)
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Gryaznevich, M. P.
(author)
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Guttenfelder, W.
(author)
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Hawkes, N. C.
(author)
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Harrison, J.
(author)
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Helander, P.
(author)
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Hender, T. C.
(author)
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Hnat, B.
(author)
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Hole, M. J.
(author)
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Howell, D. F.
(author)
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Hua, M. Duc
(author)
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Hubbard, A.
(author)
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Istenic, M.
(author)
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Joiner, N.
(author)
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Keeling, D.
(author)
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Kirk, A.
(author)
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Koslowski, H. R.
(author)
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Liang, Y.
(author)
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Lilley, M.
(author)
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Lisgo, S.
(author)
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Lloyd, B.
(author)
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Maddison, G. P.
(author)
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Maingi, R.
(author)
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Mancuso, A.
(author)
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Manhood, S. J.
(author)
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Martin, R.
(author)
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McArdle, G. J.
(author)
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McCone, J.
(author)
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Michael, C.
(author)
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Micozzi, P.
(author)
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Morgan, T.
(author)
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Morris, A. W.
(author)
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Muir, D. G.
(author)
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Nardon, E.
(author)
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Naylor, G.
(author)
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O'Brien, M. R.
(author)
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O'Gorman, T.
(author)
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Patel, A.
(author)
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Pinches, S. D.
(author)
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Preinhaelter, J.
(author)
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Price, M. N.
(author)
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Rachlew, Elisabeth
(author)
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Reiter, D.
(author)
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Roach, C. M.
(author)
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Rozhansky, V.
(author)
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Saarelma, S.
(author)
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Saveliev, A.
(author)
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Scannell, R.
(author)
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Sharapov, S. E.
(author)
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Shevchenko, V.
(author)
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Shibaev, S.
(author)
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Smith, H.
(author)
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Staebler, G. E.
(author)
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Stork, D.
(author)
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Storrs, J.
(author)
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Sykes, A.
(author)
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Tallents, S.
(author)
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Tamain, P.
(author)
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Taylor, D.
(author)
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Temple, D.
(author)
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Thomas-Davies, N.
(author)
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Thornton, A.
(author)
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Thyagaraja, A.
(author)
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Turnyanskiy, M. R.
(author)
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Urban, J.
(author)
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Valovic, M.
(author)
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Vann, R. G. L.
(author)
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Volpe, F.
(author)
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Voss, G.
(author)
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Walsh, M. J.
(author)
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Warder, S. E. V.
(author)
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Watkins, R.
(author)
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Wilson, H. R.
(author)
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Windridge, M.
(author)
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Wisse, M.
(author)
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Zabolotski, A.
(author)
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Zoletnik, S.
(author)
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Zolotukhin, O.
(author)
Related titles
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In:Nuclear Fusion: IOP Publishing49:10, s. 104017-0029-55151741-4326
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- By the author/editor
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Meyer, H.
-
Akers, R. J.
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Alladio, F.
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Appel, L. C.
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Axon, K. B.
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Ben Ayed, N.
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show more...
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Boerner, P.
-
Buttery, R. J.
-
Carolan, P. G.
-
Ciric, D.
-
Challis, C. D.
-
Chapman, I. T.
-
Coyler, G.
-
Connor, J. W.
-
Conway, N. J.
-
Cowley, S.
-
Cox, M.
-
Counsell, G. F.
-
Cunningham, G.
-
Darke, A.
-
deBock, M.
-
deTemmerman, G.
-
Dendy, R. O.
-
Dowling, J.
-
Dnestrovskij, A. ...
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Dnestrovskij, Yu ...
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Dudson, B.
-
Dunai, D.
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Dunstan, M.
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Field, A. R.
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Foster, A.
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Garzotti, L.
-
Gibson, K.
-
Gryaznevich, M. ...
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Guttenfelder, W.
-
Hawkes, N. C.
-
Harrison, J.
-
Helander, P.
-
Hender, T. C.
-
Hnat, B.
-
Hole, M. J.
-
Howell, D. F.
-
Hua, M. Duc
-
Hubbard, A.
-
Istenic, M.
-
Joiner, N.
-
Keeling, D.
-
Kirk, A.
-
Koslowski, H. R.
-
Liang, Y.
-
Lilley, M.
-
Lisgo, S.
-
Lloyd, B.
-
Maddison, G. P.
-
Maingi, R.
-
Mancuso, A.
-
Manhood, S. J.
-
Martin, R.
-
McArdle, G. J.
-
McCone, J.
-
Michael, C.
-
Micozzi, P.
-
Morgan, T.
-
Morris, A. W.
-
Muir, D. G.
-
Nardon, E.
-
Naylor, G.
-
O'Brien, M. R.
-
O'Gorman, T.
-
Patel, A.
-
Pinches, S. D.
-
Preinhaelter, J.
-
Price, M. N.
-
Rachlew, Elisabe ...
-
Reiter, D.
-
Roach, C. M.
-
Rozhansky, V.
-
Saarelma, S.
-
Saveliev, A.
-
Scannell, R.
-
Sharapov, S. E.
-
Shevchenko, V.
-
Shibaev, S.
-
Smith, H.
-
Staebler, G. E.
-
Stork, D.
-
Storrs, J.
-
Sykes, A.
-
Tallents, S.
-
Tamain, P.
-
Taylor, D.
-
Temple, D.
-
Thomas-Davies, N ...
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Thornton, A.
-
Thyagaraja, A.
-
Turnyanskiy, M. ...
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Urban, J.
-
Valovic, M.
-
Vann, R. G. L.
-
Volpe, F.
-
Voss, G.
-
Walsh, M. J.
-
Warder, S. E. V.
-
Watkins, R.
-
Wilson, H. R.
-
Windridge, M.
-
Wisse, M.
-
Zabolotski, A.
-
Zoletnik, S.
-
Zolotukhin, O.
-
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- NATURAL SCIENCES
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Nuclear Fusion
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Royal Institute of Technology