Results 131 to 140 of about 302,060 (167)
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Fast scanning probe for the NSTX spherical tokamak
Review of Scientific Instruments, 2009We describe a fast reciprocating Langmuir probe and drive system, which has four main new features: (1) use of high-temperature, vacuum, circuit boards instead of cables to reduce weight and increase to 21 the number of possible connections, (2) rotatable and removable shaft, (3) 10 tip construction with designed hardware bandwidth up to 10 MHz, and (4)
J A, Boedo +7 more
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Investigation of the electrical conductivity of a plasma in a spherical tokamak
Doklady Physics, 2004A two-dimensional mathematical model is described by the Maxwell equations, balance equations and the Ohm law equation in cylindrical coordinates. An averaging is performed by virtue of integration along a magnetic surface. Penetration of the induced magnetic field into plasma is described by the diffusion equation.
Kostomarov, D. P. +3 more
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New start for spherical tokamak
Physics World, 2015Physicists at the Princeton Plasma Physics Laboratory (PPPL) in the US are set to start experiments on a novel kind of fusion reactor known as a spherical tokamak.
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Electromagnetic Instabilities in Spherical Tokamaks
2023Electromagnetic microinstabilities are likely to dominate transport in high β next generation spherical tokamaks (STs) such as STEP. While gyrokinetic (GK) simulations have thus far proven to be a very accurate tool in modelling turbulent transport in predominantly electrostatic regimes at low β, obtaining saturated nonlinear simulations of plasmas ...
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Central Solenoid for Spherical Tokamak Globus-M
Fusion Technology, 1998The central solenoid is a critical component of the spherical tokamak Globus-M (plasma major radius R = 0.36 m, plasma minor radius a = 0.24 m, aspect ratio R/a = 1.5, toroidal magnetic field BT ≤ 0.62 T, plasma current Ip ≤ 0.5 MA). The two-layer solenoid, 1312 mm long with a 200-mm outer diameter, is located between the 112-mm-diam inner rod of the ...
Gusev, V. +9 more
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Prospects for pilot plants based on the tokamak, spherical tokamak and stellarator
Nuclear Fusion, 2011A potentially attractive next-step towards fusion commercialization is a pilot plant, i.e. a device ultimately capable of small net electricity production in as compact a facility as possible and in a configuration scalable to a full-size power plant. A key capability for a pilot-plant programme is the production of high neutron fluence enabling fusion
J.E. Menard +21 more
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Simulation of eddy currents in spherical tokamaks
Nuclear Fusion, 2006The simulation of eddy currents induced in the vacuum vessel and central column of spherical tokamaks is discussed, improving upon previously published methods. The present model allows us to describe the vacuum vessel either as a thin shell or as a large collection of rings, formally reducing the problem to a set of coupled circuit equations.
G.O Ludwig +3 more
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The Mega Amp Spherical Tokamak
Fusion Engineering and Design, 1999Results from START at Culham have been very impressive and have triggered the construction of several new Spherical Tokamaks (R/a ≤ 1.5), including the Mega Amp Spherical Tokamak (MAST), which was given EURATOM approval in April 1996. MAST (R = 0.7 m, a = 0.5 m, k ∼ 2, I p ≤ 2 MA) is twice the size of START and will allow plasmas with cross-section ...
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Proposal on LHCD Experiments in Spherical Tokamaks
AIP Conference Proceedings, 2009A new approach for LHCD problem in spherical tokamaks (ST) is investigated, when the LH waves are slowed down in poloidal rather than toroidal direction by a grill antenna oriented vertically. Characteristics of wave propagation are found by ray tracing technique modernized for the case of strongly inhomogeneous plasma in ST.
O. N. Shcherbinin +6 more
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