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[en] Equilibrium calculations which conserve adiabatic quantities (magnetic fluxes, particle number and entropy) during major-radius compression in a tokamak have been made using a flux surface averaged description of the plasma behaviour in order to solve the two-dimensional plasma equilibrium equation. Boundary conditions are chosen to avoid skin current formation during compression and the changes of the ohmic heating flux required to maintain this condition are determined. Comparisons are made between the plasma parameter variations determined from these computations and the scaling behaviour predicted by a large aspect ratio approximation to the adiabatic constraints. (orig.)

[en] Mathematical modelling ofa n experiment on compression of deuterium plasma by a conical striker is carried out. The experiment lies in the following: there is 1 mm radius conical recess in lead target, filled with deuterium, and closed with 0.3 mm thick aluminium cover. It is supposed that high-temperature plasma availbility in corresponding experiment is explined by its intensive viscous heating. The main result resides in unlimited temperature increase inside viscous boundary layer. Results of check calculations and technique description, which/new element is nonexplicit diagram in Lagrange's varibles on nonrectangular grids, are presented

[en] Fusion devices based on the adiabatic (or shock) compression of the plasma by electromagnetically driven liner need specific energy sources capable of delivering a high current (10 MA) in the pulses 0.1 - 1 microsecond long. In the present experimental facilities, the plasma load is situated very close to the pulse-power energy source. In the future fusion devices, one would have to place a plasma load at a considerable distance from the energy source (to avoid strong neutron and thermo-mechanical damage to the source). Several versions of the stand-off energy sources are considered. All are based on the idea of an ''assembly'' - an object where the plasma load is nested and which contains all necessary circuitry that allows conversion of the energy delivered to the assembly into the magnetic energy. Such ''assemblies'' will be dropped (or inserted) into the reaction chamber at a desired rate and energized by a stand-off energy source. Four specific concepts have been mentioned

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[en] Extrapolating from the Pulsed Spheromak reactor and the LINUS concept, we consider ignition achieved by injecting a conducting liquid into the flux conserver to compress a low temperature spheromak created by gun injection and ohmic heating. The required energy to achieve ignition and high gain by compression is comparable to that required for ohmic ignition and the timescale is similar so that the mechanical power to ignite by compression is comparable to the electrical power to ignite ohmically. Potential advantages and problems are discussed. Like the High Beta scenario achieved by rapid fueling of an ohmically ignited plasma, compression must occur on timescales faster than Taylor relaxation

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[en] After two years of preparation, hardware for high-power FRC compression heating studies is now being installed onto FRX-C/LSM. FRCs will be formed and translated out of the θ-pinch source, and into a compressor where the external B-field will be increased from 0.4 to 2 T in 55 μs. The compressed FRC can then be translated into a third stage for further study. A principal experimental goal is to study FRC confinement at the high energy density, n(T/sub e/ + T/sub i/) ≤ 1.0 /times/ 10²² keV/m³, associated with the large external field. Experiments are scheduled to begin in April. 11 refs., 5 figs