Results 21 to 30 of about 116,100 (253)

Perturbative analysis of low-frequency instabilities in high-field ST40 experiments

Nuclear Fusion, 2023
Linear and nonlinear perturbative analyses of low-frequency instabilities are presented for ST40 spherical torus high field plasmas, with simultaneous neutral beam heating due to two tangential sources at 25 keV and 55 keV.
V.N. Duarte, N.N. Gorelenkov, S.M. Kaye, P.J. Bonofiglo, M. Podestà, J. Bland, P. Buxton, M. Gryaznevich, M. Romanelli, M. Sertoli   +9 more
doaj   +1 more source

X-point radiation, its control and an ELM suppressed radiating regime at the ASDEX Upgrade tokamak

Nuclear Fusion, 2020
Future fusion reactors require a safe, steady state divertor operation. The required detached operation is, in tokamaks with metal walls, usually achieved by seeding of impurities, such as nitrogen.
M. Bernert, F. Janky, B. Sieglin, A. Kallenbach, B. Lipschultz, F. Reimold, M. Wischmeier, M. Cavedon, P. David, M. Dunne, M. Griener, O. Kudlacek, R. McDermott, W. Treutterer, E. Wolfrum, D. Brida, O. Février, S. Henderson, M. Komm   +18 more
semanticscholar   +1 more source

Time-dependent modelling of 104/137 GHz X2-mode ECRH on ST40 to aid future scenario development [PDF]

EPJ Web of Conferences
With a multi-Tesla magnetic field and the capability to achieve fusion-relevant ion temperatures, the ST40 experiment is uniquely positioned as a high-performance spherical tokamak on which to test reactor-relevant technologies.
Lopez Nicolas, Zhang Xin, Romanelli Michele, Alieva Aleksandra, Shevchenko Vladimir   +4 more
doaj   +1 more source

Evaluation of the functional acceptability of the ITER vacuum vessel

Nuclear Fusion, 2022
The International Thermonuclear Experimental Reactor (ITER) vacuum vessel (VV) is one of the critical components of the ITER tokamak fusion reactor. The first sector of the ITER VV was delivered to ITER Organization in 2020, and it is ready to assemble ...
Hokyu Moon, Soo-Hyeon Park, Hyun-Soo Kim, Beom Seok Kim   +3 more
doaj   +1 more source

Effects of CT injector acceleration electrode configuration on tokamak penetration [PDF]

, 1998
Through compact toroid (CT) injection experiments on the TEXT-U tokamak (with BT simeq 10 kG and IP simeq 100 kA), it has been shown that the acceleration electrode configuration, particularly in the vicinity of the toroidal field (TF) coils of the ...
Bellan, P. M., Yee, J.
core   +1 more source

Progress in the pre-conceptual design of the auxiliary heating and current drive system for the Tokamak Energy Fusion Pilot Plant [PDF]

EPJ Web of Conferences
Auxiliary heating and current drive is a crucial aspect of reactor-relevant tokamaks. Tokamak Energy is currently in the design phase of their Fusion Pilot Plant (FPP). Initial investigations for the flat-top phase of plasma scenarios rely exclusively on
Alieva Aleksandra, Lopez Nicolas, McNamara Steven, Takase Yuichi, Zhang Xin   +4 more
doaj   +1 more source

Plasma Ramp-up and Sustainment Scenarios for Tokamak Energy’s Fusion Pilot Plant [PDF]

EPJ Web of Conferences
Tokamak Energy is designing a Fusion Pilot Plant under the US Department of Energy’s Milestone-Based Fusion Development Program. Tokamak Energy’s Fusion Pilot Plant is based on low aspect ratio tokamak with high-temperature superconducting coils ...
Takase Yuichi, Astbury Jack, McNamara Steven, Wilson Chris, Alieva Aleksandra, Lopez Nicolas, Zhang Xin   +6 more
doaj   +1 more source

Chaotic motion of charged particles in toroidal magnetic configurations [PDF]

, 2014
We study the motion of a charged particle in a tokamak magnetic field and discuss its chaotic nature. Contrary to most of recent studies, we do not make any assumption on any constant of the motion and solve numerically the cyclotron gyration using ...
Arnold V., Benjamin Cambon, Bogoliubov N. N., Michel Vittot, Neishtadt A. I., Rémi Dumont, Xavier Garbet, Xavier Leoncini, Yushmanov P. N.   +8 more
core   +4 more sources

Effect of negative triangularity on the bulk ions co-current rotation caused by the ion orbit loss at the edge of the tokamak plasmas

Nuclear Fusion, 2022
The ion orbit loss (IOL) can drive the bulk ions co-current rotation at the edge of the tokamak plasmas. The effect of triangularity on the IOL is investigated by using an analytical tokamak equilibrium model for the shaped plasmas.
Ruoying Wang, Chengkang Pan
doaj   +1 more source

Simple Parametric Model for Calculation of Lateral Electromagnetic Loads in Tokamaks at Asymmetric Vertical Displacement Events (AVDE)

Plasma, 2022
This paper describes a family of relatively simple numerical models for calculation of asymmetric electromagnetic (EM) loads at all tokamak structures and coils at asymmetric vertical plasma displacement events (AVDE). Unlike currently known AVDE studies
Sergey Sadakov, Fabio Villone, Guglielmo Rubinacci, Salvatore Ventre   +3 more
doaj   +1 more source