Results 21 to 30 of about 302,060 (167)

Features of spherical torus plasmas [PDF]

, 1985
The spherical torus is a very small aspect ratio (A 2 are characterized by high toroidal beta (..beta../sub t/ > 0.2), low poloidal beta (..beta../sub p/ 1.5), and strong plasma helicity (F comparable to THETA).
Strickler, D. J., Peng, Y. K. M., D.J. Strickler, Y.K.M. Peng   +3 more
core   +1 more source

Multi-Scale microscopy of Reactive sintered boride (RSB) neutron shielding materials

Nuclear Materials and Energy, 2022
Protecting superconducting magnets from neutron irradiation is critically important when demonstrating the utility of spherical tokamaks. Reactive Sintered Borides (RSBs) are promising radiation-dense materials and excellent attenuators of slow (
J.M. Marshall, F. Tang, Y. Han, P.A.J. Bagot, M.P. Moody   +4 more
doaj   +1 more source

Low n electromagnetic modes in spherical tokamaks

Plasma Physics and Controlled Fusion, 2021
Abstract The performance of spherical tokamak reactors depends on plasma β, and an upper limit is set by long-wavelength kinetic ballooning modes (KBMs). We examine how these modes become unstable in spherical-tokamak reactor relevant plasmas, which may contain significant fast-ion pressure.
J Chowdhury, B F McMillan
openaire   +1 more source

Wave Driven Fast Ion Loss in the National Spherical Torus Experiment [PDF]

, 2003
Spherical tokamaks, with their relatively low toroidal field, extend fast-ion-driven instability physics to parameter ranges not normally accessed in conventional tokamaks. The low field means that both the fast-ion Larmor radius normalized to the plasma
L. Roquemore, N. N. Gorelenkov, Darrow, D., Menard, J., Cheng, C. Z., E. D. Fredrickson, Medley, S. S., Roquemore, L., Kramer, G., Fu, G., Stutman, D., J. Menard, Fredrickson, E. D., White, R. B., G. Fu, D. Stutman, R. B. White, D. Darrow, S. S. Medley, C. Z. Cheng, Gorelenkov, N. N., G. Kramer, null G. Fu, null C.Z. Cheng, null L. Roquemore, null D. Stutman, null D. Darrow, null R.B. White, null N.N. Gorelenkov, null S.S. Medley, null G. Kramer, null J. Menard, null E.D. Fredrickson   +32 more
core   +1 more source

Adhesive force distributions for tungsten dust deposited on bulk tungsten and beryllium-coated tungsten surfaces

Nuclear Materials and Energy, 2018
Comprehensive measurements of the adhesive force for tungsten dust adhered to tungsten surfaces have been performed with the electrostatic detachment method.
P. Tolias, G. Riva, M. De Angeli, S. Ratynskaia, G. Daminelli, C.P. Lungu, C. Porosnicu   +6 more
doaj   +1 more source

Demonstration of transient CHI startup using a floating biased electrode configuration

Nuclear Fusion, 2023
Results from the successful solenoid-free plasma startup using the method of transient coaxial helicity injection (transient CHI) in the QUEST spherical tokamak (ST) are reported.
K. Kuroda, R. Raman, T. Onchi, M. Hasegawa, K. Hanada, M. Ono, B.A. Nelson, J. Rogers, R. Ikezoe, H. Idei, T. Ido, M. Nagata, O. Mitarai, N. Nishino, Y. Otsuka, Y. Zhang, K. Kono, S. Kawasaki, T. Nagata, A. Higashijima, S. Shimabukuro, I. Niiya, I. Sekiya, K. Nakamura, Y. Takase, A. Ejiri, S. Murakami   +26 more
doaj   +1 more source

Energetic particle-driven compressional Alfvén eigenmodes and prospects for ion cyclotron emission studies in fusion plasmas

New Journal of Physics, 2016
As a fundamental plasma oscillation the compressional Alfvén waves (CAWs) are interesting for plasma scientists both academically and in applications for fusion plasmas. They are believed to be responsible for the ion cyclotron emission (ICE) observed in
N N Gorelenkov
doaj   +1 more source

SOLPS-ITER analysis of a proposed STEP double null geometry: impact of the degree of disconnection on power-sharing

Nuclear Fusion, 2023
To mitigate the issue of plasma exhaust in reactor scale tight aspect ratio tokamaks such as Spherical Tokamak for Energy Production (STEP), a double-null (DN) configuration is thought to be advantageous over a single-null (SN) configuration.
R.T. Osawa, D. Moulton, S.L. Newton, S.S. Henderson, B. Lipschultz, A. Hudoba   +5 more
doaj   +1 more source

Modelling for JET Vertical Stabilization System [PDF]

, 2010
Nuclear fusion is, in a sense, the opposite of nuclear fission. Fission, which is a mature technology, produces energy through the splitting of heavy atoms like uranium in controlled chain reactions.
Bellizio, Teresa
core   +1 more source

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