Results 1 to 10 of about 293 (148)

Shielding materials in the compact spherical tokamak. [PDF]

Philos Trans A Math Phys Eng Sci, 2019
Neutron shielding materials are a critical area of development for nuclear fusion technology. In the compact spherical tokamak, shielding efficiency improvements are particularly needed because of severe space constraints. The most spatially restricted component is the central column shield.
Humphry-Baker SA, Smith GDW.
europepmc   +6 more sources

“PROCESS”: Systems studies of spherical tokamaks [PDF]

Fusion Engineering and Design, 2020
With a reduced aspect ratio, spherical tokamaks have a number of attractive features for a fusion power plant. This can be studied using systems codes, which allow for the rapid conceptual study of power plants covering everything, from the plasma through to electricity generation. In this paper, we describe models in the systems code PROCESS that have
Muldrew, Stuart I., Lux, Hanni, Cunningham, Geof, Hender, Tim C., Kahn, Sebastien, Knight, Peter J., Patel, Bhavin, Voss, Garry M., Wilson, Howard R.   +8 more
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Methodology of Plasma Shape Reachability Area Estimation in D-Shaped Tokamaks

Mathematics, 2022
This paper suggests and develops a new methodology of estimation for a multivariable reachability region of a plasma separatrix shape on the divertor phase of a plasma discharge in D-shaped tokamaks.
Yuri V. Mitrishkin, Valerii I. Kruzhkov, Pavel S. Korenev   +2 more
doaj   +1 more source

Pulsed Spherical Tokamak—A New Approach to Fusion Reactors

Plasma, 2022
Traditionally, spherical tokamak (ST) reactors are considered to operate in a steady state. This paper analyses the advantages of a pulsed ST reactor.
Mikhail Gryaznevich, Valery A. Chuyanov, Yuichi Takase   +2 more
doaj   +1 more source

Design of power supply system for the NanChang Spherical Tokamak

AIP Advances, 2022
The NanChang Spherical Tokamak (NCST), a new compact (plasma major radius R = 0.40 m, minor radius a = 0.24 m, and aspect ratio A = 1.67) spherical tokamak, is suitable for teaching and scientific research activities at the university. The principal goal
Ming Hou, Y. Z. Qian, S. Q. Liu, X. S. Yang, X. C. Chen   +4 more
doaj   +1 more source

Overview of recent progress on steady state operation of all-metal plasma facing wall device QUEST

Nuclear Materials and Energy, 2021
QUEST (Q-shu university experiment with steady state spherical tokamak) is a midsize spherical tokamak capable of steady-state operation, comprising all-metal plasma-facing walls and a hot wall (HW) to address issues pertaining to fuel particle balance ...
K. Hanada, N. Yoshida, M. Hasegawa, M. Oya, Y. Oya, I. Takagi, A. Hatayama, T. Shikama, H. Idei, Y. Nagashima, R. Ikezoe, T. Onchi, K. Kuroda, S. Kawasaki, A. Higashijima, T. Nagata, S. Shimabukuro, K. Nakamura, S. Murakami, Y. Takase, X. Gao, H. Liu, J. Qian   +22 more
doaj   +1 more source

Investigation of Tearing Modes on the Spherical Tokamak Globus-M2 Using the Doppler Backscattering Method

Applied Sciences, 2023
In this study, we observed magnetohydrodynamic (MHD) activity of the spherical tokamak Globus-M2 which led to a deterioration in plasma confinement, such as a transition from the H-mode to L-mode, or even disruption.
Alexander Yashin, Anna Ponomarenko, Ivan Balachenkov, Gleb Kurskiev, Evgenii Kiselev, Vladimir Minaev, Alexander Petrov, Yury Petrov, Nikolay Sakharov, Nikita Zhiltsov   +9 more
doaj   +1 more source

Design of vacuum system for NCST spherical tokamak

AIP Advances, 2023
The NanChang Spherical Tokamak (NCST) is a new compact tokamak with an aspect ratio of R/a = 1.67. The vacuum system is one of the most important sub-systems of the tokamak device and has been designed especially for the NCST device. It consists of three
Fu Hua Huang, Dong Hua Xiao, Xiao Chang Chen, Hui Chen, San Qiu Liu   +4 more
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Spherical tokamak development in Brazil [PDF]

Brazilian Journal of Physics, 2003
This paper describes the general characteristics of spherical tokamaks, or spherical tori, with a brief overview of work in this area already performed or in progress at several institutions worldwide. The paper presents also the steps in the development of the ETE (Experimento Tokamak Esferico) project, its research program, technical characteristics ...
Ludwig, G.O., Del Bosco, E., Ferreira, J.G., Berni, L.A., Oliveira, R.M., Andrade, M.C.R., Shibata, C.S., Ueda, M., Barbosa, L.F.W., Barroso, J.J., Castro, P.J., Patire Jr, H.   +11 more
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Gyrokinetic simulations of spherical tokamaks [PDF]

Plasma Physics and Controlled Fusion, 2009
This paper reviews transport and confinement in spherical tokamaks (STs) and our current physics understanding of this that is partly based on gyrokinetic simulations. Equilibrium flow shear plays an important role, and we show how this is consistently included in the gyrokinetic framework for flows that greatly exceed the diamagnetic velocity. The key
Roach, C, Abel, I, Akers, R, Arter, W, Barnes, M, Camenen, Y, Casson, F, Colyer, G, Connor, J, Cowley, S, Dickinson, D, Dorland, W, Field, A, Guttenfelder, W, Hammett, G, Hastie, R, Highcock, E, Loureiro, N, Peeters, A, Reshko, M, Saarelma, S, Schekochihin, A, Valovic, M, Wilson, H   +23 more
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