Results 71 to 80 of about 1,577 (223)

Relaxation Phenomena in Spherical Tokamak Plasma [PDF]

Progress of Theoretical Physics Supplement, 2000
Dynamics of a relaxation phenomenon observed in Spherical Tokamak experiments, which is called Internal Reconnection Event (IRE), is studied by magnetohydrodynamic computer simulation. Coupling between the torus magnetic field and the external field induced by nonlinear growth of pressure driven instabilities, and resultant formation of tunnel-like ...
Takaya Hayashi, Naoki Mizuguchi, Tetsuya Sato   +2 more
openaire   +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., Nightingale, M.P. S., 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.   +40 more
core   +1 more source

Convective and Orographic Origins of the Mesoscale Kinetic Energy Spectrum

Geophysical Research Letters, Volume 51, Issue 21, 16 November 2024.
Abstract The mesoscale spectrum describes the distribution of kinetic energy in the Earth's atmosphere between length scales of 10 and 400 km. Since the first observations, the origins of this spectrum have been controversial. At synoptic scales, the spectrum follows a −3 spectral slope, consistent with two‐dimensional turbulence theory, but a ...
Salah Kouhen, Benjamin A. Storer, Hussein Aluie, David P. Marshall, Hannah M. Christensen   +4 more
wiley   +1 more source

Fully non-inductive plasma start-up with lower-hybrid waves using the outboard-launch and top-launch antennas on the TST-2 spherical tokamak

EPJ Web of Conferences, 2017
Removal of the central solenoid is essential to realize an economical spherical tokamak fusion reactor, but non-inductive plasma start-up is a challenge. On the TST-2 spherical tokamak, non-inductive plasma start-up using lower-hybrid (LH) waves has been
Tsujii Naoto, Takase Yuichi, Ejiri Akira, Shinya Takahiro, Yajima Satoru, Yamazaki Hibiki, Togashi Hiro, Moeller Charles P., Roidl Benedikt, Takahashi Wataru, Toida Kazuya, Yoshida Yusuke   +11 more
doaj   +1 more source

An alternative approach in fusion: Spherical tokamak

, 2003
Enerji sorununa alternatif yollardan biri de füzyondur. Füzyon işleminde uygulanan birçok yöntem vardır. Bu yöntemlerden biri olan tokamak kavramı deneysel başarıları ile çekici olmaktadır.
Serin, Gökhan, Özdaş, Kudret
core  

X‐ray lens figure errors retrieved by deep learning from several beam intensity images

Journal of Synchrotron Radiation, Volume 31, Issue 5, Page 1001-1009, September 2024.
A neural network trained with a few thousand simulations using random errors is demonstrated to predict accurately the lens error profile that accounts for all aberrations of a compound refractive lens in a synchrotron beamline.The phase problem in the context of focusing synchrotron beams with X‐ray lenses is addressed.
Manuel Sanchez del Rio, Rafael Celestre, Juan Reyes-Herrera   +2 more
wiley   +1 more source

Summary of the 29th IAEA Fusion Energy Conference under the topics materials, in-vessel components, next-step machines, and licensing and safety and socio-economic and environment

Nuclear Fusion
This paper represents one half of a set of two, covering the TECHNOLOGY presentations at the Fusion Energy Conference (FEC), held in London, UK, in October 2023.
A. Quadling
doaj   +1 more source

Fast ion orbits in spherical tokamaks [PDF]

Physics of Plasmas, 1996
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   +1 more source

Mechanical model for a full fusion tokamak enabled by supercomputing

Nuclear Fusion
Determining stress and strain in a component of a fusion power plant involves defining boundary conditions for the mechanical equilibrium equations, which implies the availability of a full reactor model for defining those conditions.
W.M.E. Ellis, L. Reali, A. Davis, H.M. Brooks, I. Katramados, A.J. Thornton, R.J. Akers, S.L. Dudarev   +7 more
doaj   +1 more source

Progress of the Plasma Centerpost for the PROTO-SPHERA Spherical Tokamak

Energies, 2016
Plasma properties can be useful in a wide spectrum of applications. Experimental projects on controlled nuclear fusion are the most challenging of these applications and, at the same time, the best way to approach plasma science.
Alessandro Lampasi, Giuseppe Maffia, Franco Alladio, Luca Boncagni, Federica Causa, Edmondo Giovannozzi, Luigi Andrea Grosso, Alessandro Mancuso, Paolo Micozzi, Valerio Piergotti, Giuliano Rocchi, Alessandro Sibio, Benedetto Tilia, Vincenzo Zanza   +13 more
doaj   +1 more source