Results 91 to 100 of about 321,964 (214)

Heating and current drive in STEP: why neutral beam injection is not desirable

Nuclear Fusion
Spherical Tokamak for Energy Production (STEP) is the UK’s prototype fusion power plant programme aiming to demonstrate net electrical output from a spherical tokamak. The plasma scenarios require a completely non-inductive current drive for the flat-top
Thomas Wilson, Mark Henderson, Hana El-Haroun, Anurag Saigiridhari, Emmi Tholerus   +4 more
doaj   +1 more source

Nonlinear fishbone dynamics in spherical tokamaks

Nuclear Fusion, 2016
Abstract Linear and nonlinear kinetic-MHD hybrid simulations have been carried out to investigate linear stability and nonlinear dynamics of beam-driven fishbone instability in spherical tokamak plasmas. Realistic NSTX parameters with finite toroidal rotation were used.
Feng Wang, G.Y. Fu, Wei Shen
openaire   +2 more sources

Plasma boundary reconstruction and shape control of Tokamak discharges in RFX-mod [PDF]

, 2011
La tesi si occupa del controllo di forma del plasma in configurazione Tokamak a doppio nullo nell’esperimento RFX-mod. Vengono affrontate problematiche di ricostruzione della forma, con un apporto originale nell’utilizzo di una interpolante thin plate ...
Merlo, Pierangelo
core  

MHD Equilibrium and Stability of Spherical Tokamak Plasma with Current Hole [PDF]

The potential characteristics of spherical tokamak configurations with current hole are investigated from the point of view of magnetohydrodynamic (MHD) equilibrium and stability.
MIZUGUCHI, Naoki, HAYASHI, Takaya
core   +1 more source

Overview of recent results from the ST40 compact high-field spherical tokamak

Nuclear Fusion
ST40 is a compact, high-field ( $B_{\mathrm{T0}}\unicode{x2A7D} 2.1\,\,\,\textrm{T}$ ) spherical tokamak (ST) with a mission to expand the physics and technology basis for the ST route to commercial fusion.
S.A.M. McNamara, A. Alieva, M.S. Anastopoulos Tzanis, O. Asunta, J. Bland, H. Bohlin, P.F. Buxton, C. Colgan, A. Dnestrovskii, E. du Toit, M. Fontana, M. Gemmell, M.P. Gryaznevich, J. Hakosalo, M.R. Hardman, D. Harryman, D. Hoffman, M. Iliasova, S. Janhunen, F. Janky, J.B. Lister, H.F. Lowe, E. Maartensson, C. Marsden, S.Y. Medvedev, S.R. Mirfayzi, M. Moscheni, G. Naylor, V. Nemytov, J. Njau, T. O’Gorman, D. Osin, T. Pyragius, A. Rengle, M. Romanelli, C. Romero, M. Sertoli, V. Shevchenko, J. Sinha, A. Sladkomedova, S. Sridhar, J. Stirling, Y. Takase, P.R. Thomas, J. Varje, E. Vekshina, B. Vincent, H.V. Willett, J. Wood, E. Wooldridge, D. Zakhar, X. Zhang, D. Battaglia, N. Bertelli, P.J. Bonofiglo, L.F. Delgado-Aparicio, V.N. Duarte, N.N. Gorelenkov, M. de Haas, S.M. Kaye, R. Maingi, D. Mueller, M. Ono, M. Podesta, Y. Ren, S. Trieu, E. Delabie, T.K. Gray, B. Lomanowski, E.A. Unterberg, O. Marchuk, the ST40 Team   +71 more
doaj   +1 more source

L-H transition in the mega-Amp spherical tokamak

, 2002
H-mode plasmas have been achieved on the MAST spherical tokamak at input power considerably higher than predicted by conventional threshold scalings.
Dnestrovskij, Y. N., Walsh, M. J., Field, A. R., Martin, R., Shevchenko, V., Fielding, S. J., Nightingale, M.P.S., Akers, R. J., Arends, E.R., Fielding, S.J., Sykes, A., Nightingale, M. P. S., Roach, C. M., Dnestrovskij, Y.N., Roach, C.M., Gryaznevich, M., Appel, L. C., Counsell, G. F., Carolan, P. G., Appel, L.C., Kirk, A., Conway, N. J., Dnestrovskij, A., Conway, N.J., Akers, R.J., Torunianski, M., Walsh, M.J., Korsholm, S., Warrick, C.D., Arends, E. R., Byrom, C., Carolan, P.G., Cunningham, G., Helander, P., Meyer, H., Field, A.R., Warrick, C. D., Counsell, G.F., Korsholm, Søren Bang, Tournianski, M., P. Helander, R. Martin, L. C. Appel, Yu. N. Dnestrovskij, S. J. Fielding, P. G. Carolan, A. Dnestrovskij, C. Byrom, G. F. Counsell, A. Sykes, A. Kirk, R. J. Akers, null The MAST Team, M. Gryaznevich, E. R. Arends, M. J. Walsh, null The NBI Team, G. Cunningham, H. Meyer, V. Shevchenko, M. P. S. Nightingale, N. J. Conway, C. M. Roach, M. Tournianski, C. D. Warrick, S. Korsholm, A. R. Field   +66 more
core   +1 more source

The impact of E × B shear on microtearing based transport in spherical tokamaks

Nuclear Fusion
Electromagnetic microtearing modes (MTMs) have been observed in many different spherical tokamak (ST) regimes. Understanding how these and other electromagnetic modes nonlinearly saturate is likely critical in understanding the confinement of a high β ST.
B.S. Patel, M.R. Hardman, D. Kennedy, M. Giacomin, D. Dickinson, C.M. Roach   +5 more
doaj   +1 more source

Development of the Langmuir probe under q-distribution for NCST

AIP Advances
The Langmuir probe is one of the important diagnostic methods for measuring the edge plasma parameters of tokamak. A quadruple Langmuir probe (QLP) system was designed and built on the NanChang Spherical tokamak (NCST).
Donghua Xiao, Xiaochang Chen, Sanqiu Liu, Hui Chen, Yuzhen Xiong   +4 more
doaj   +1 more source

Fast ion orbits in spherical tokamaks [PDF]

, 1995
In a spherical tokamak, the 1/R variation of the toroidal field is extreme, and for a given value of the safety factor a relatively low average toroidal field can be used, together with large plasma current and large plasma minor radius and elongation. The poloidal and toroidal fields are then of similar size.
openaire   +2 more sources

Self-organization during spherical torus formation by flux rope merging in the Mega Ampere Spherical Tokamak

, 2014
Merging-compression start-up in the Mega Ampere Spherical Tokamak provides an opportunity to investigate the merging of flux ropes through magnetic reconnection, and the self-organization into a single flux rope, in a low-plasma-β, high-Lundquist-number ...
Browning, P K; id_orcid, McClements, K G, Stanier, A, Ashworth, G, Lukin, V S   +4 more
core   +1 more source