[en] Separate entries for each of the 29 papers were input into the data base

No abstract available

[en] The properties of a wave arising during the longitudinal compression stage of compact-torus formation are investigated. A compact-torus configuration is formed when a plasma with a frozen magnetic field having sign reversal at a cylindrical surface of a certain radius is squeezed in two cross sections by switching on supplementary current windings. As a result, induced reconnection of the magnetic fluxes of opposite signs occurs, and a closed configuration is formed which undergoes compression along the Z-axis. Experiments and calculations show that this longitudinal compression is accompanied by formation of a wave of characteristic swelling moving to the midplane of a setup. The swelling front propagates at a velocity V₁, and the plasma velocity behind this front is equal to U. In this work, a link between wave characteristics and initial plasma parameters is established. It is of interest by itself and can also be of importance for experimental investigations. 9 refs., 3 figs

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[en] This paper which describes experiments carried out in the Compact Torus of UNICAMP (TC-1) is divided into 3 parts: 1) summary of TC-1 characteristics and its operation mode; 2) description of diagnostics in use and ones to be installed, 3) recent experimental results using optical and electromagnetical diagnostics. (author)

[en] We present simulation results and experimental data for the compression of a compact toroid by a conducting nozzle without a center electrode. In both simulation and experiment, the plasma flow is obstructed by even modest magnetic fields. A simple mechanism for this obstruction is suggested by our simulations. The configuration of the plasmoid's magnetic field plays a significant role in its compression. We analyze two types of plasma configurations under compression and demonstrate that the results from the simulations match those from the experiments, and that the mechanism predicts the different behaviors observed in the two cases.

[en] Experiments to form and accelerate compact toroid (CT) plasmas have been performed on the 9.4 MJ Shiva Star fast capacitor bank at Phillips Laboratory since late 1990. The authors investigate the possibility of employing a CT as a very fast opening switch by performing 2-1/2 dimensional magnetohydrodynamic computer simulations of a pair of axisymmetric, albeit geometrically-complex, switch designs. Both designs conduct current for ten or more μs. The first design relies on the acceleration of the CT to high speed whereas the second design does not. Although both designs hold promise for achieving a fast (less than 100 ns) opening time, the second may prove to be a preferred design because of its low impedance

[en] Realistic FRC equilibria are calculated and their stability to the n=1 tilting mode is studied. Excluding kinetic effects, configurations ranging from elliptical to racetrack are unstable. Particle simulations of FRCs show that particle loss on open field lines can cause sufficient plasma rotation to drive the n=2 rotational instability. The allowed frequencies of the shear Alfven wave are calculated for use in heating of spheromaks. An expanded spheromak is introduced and its stability properties are studied. Transport calculations of CTs are described. A power balance model shows that many features of gun-generated CT plasmas can be explained by the dominance of impurity radiation. It is shown how the Taylor relaxation theory, applied to gun-generated CT plasmas, leads to the possibility of steady-state current drive. Lastly, applications of accelerated CTs are considered. (author)

No abstract available

No abstract available