High Velocity Plasma Fluxes
High Velocity Laser Plasma Fluxes in Strong Magnetic Fields and their Application for Optimization of Pressure Profile and Current Distribution in Magnetic Confinement Systems and in Modeling Solar Plasma-Magnetic Phenomena
Tech Area / Field
3 Approved without Funding
TRINITI, Russia, Moscow reg., Troitsk
- VNIIEF, Russia, N. Novgorod reg., Sarov\nFIAN Lebedev, Russia, Moscow
- Massachusetts Institute of Technology (MIT), USA, MA, Boston\nArgonne National Laboratory (ANL), USA, IL, Argonne
Project summaryThe goal of the Project is to realize a program of numerical-theoretical and experimental investigation of high-velocity plasma fluxes, formed in a strong magnetic field under high-power laser irradiation of a condensed target, and to study their potentialities to be used for improving the quality of plasma confinement in magnetic-confinement systems (basing on the optimization of the current distribution and plasma pressure profiles), and for laboratory modeling of the solar plasma-magnetic phenomena.
For the execution of the proposed program and for searching the practical application of the obtained results it is assumed to make use of the wide experience gained by the scientists and engineers from TRINITI, VNIIEF and LPI in the field of creation and application of high-power lasers and magnetic systems, as well as in investigation of high-power laser interaction with matter. The experiments are performed at VNIIEF, using a high-power CO2-laser supplied with the necessary technological and diagnostic equipment. The experiments are planned to be performed with the discharge chamber in two versions: a direct solenoid (the magnetic field being B=12 Tl), and closed magnetic field (B=2 Tl). The problem of high-velocity pellet injection into the tokamak plasma volume with the help of lasers will be considered. The computers available at TRINITI and VNIIEF allow the numerical investigation of many problems on the base of double-liquid hydrodynamics (with some elements of kinetic description), including 2D and 3D numerical modeling.
The project execution will result in more complete and sophisticated understanding of the processes of high-power laser interaction with condensed target in a strong magnetic field, as well as the plasma states with maximum energy in closed plasma column.
1). The formation and control over the parameters of high-velocity plasma fluxes in a strong magnetic field with the help of high-power lasers will be carried out. The recommendations will be given on possible application these fluxes in magnetic confinement systems and technology.
2). A theoretically predicted effect of non-induction current generation in a closed plasma cycle under laser irradiation of condensed target in a strong magnetic field is to be tested experimentally.
3). Basing on the results obtained from the experimental and theoretical research and numerical modeling, the recommendations concerning realization of the additional heating and the possibilities to provide the given current profiles and plasma pressure in thermonuclear magnetic confinement systems will be worked out. The required laser and target parameters will be determined.
4) A study into the possibility of laboratory modeling of the solar plasma-magnetic phenomena will give us great insight into this problem, and, in future, will help in carrying out the experiments on studying the effects observed in the solar wind interaction with the Earth magnetosphere.
The project immediate advantage is in improving the parameters of the magnetic confinement systems intended at diminishing the size and cost of a demonstration reactor. This will benefit further progress in TLF research. This may also speed up the conversion of industry from military to civilian purposes, and promote international cooperation.
Potential role of foreign collaborators
It is desirable that the foreign scientists could participate in the following topics:
1) theoretical investigation of the phenomena associated with the formation of high-velocity circular plasma fluxes in tokamaks and stellarators. The influence of these fluxes on plasma equilibrium and stability;
2) recommendations on improving the quality of plasma magnetic confinement. This includes the program of experimental investigations with the use of high-power CO2-lasers at the operating tokamaks and stellarators;
3) study into the possibility of the laboratory modeling of the solar wind interaction with the Earth magnetosphere. Formulation of the experimental program.
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