Prof. Boris Kuteev (National Reserch Center Kurchatov Institute)
A vital goal of inertial fusion energy (IFE) research is development of high-precision, mass production technologies for cryogenic fuel targets fabrication and their delivery to the reaction chamber at a high rate (10-20 Hz) . At the Lebedev Physical Institute (LPI), a mechanical mockup of IFE reactor has been proposed  for developing the reactor-scaled technologies that are applicable to mass production of the cryogenic targets and their high-rep-rate delivery. The report presents an overview of the researches underlying this approach, including: - Target mass production. Free-standing cryogenic target production using the FST-technology developed at LPI was demonstrated for cryogenic targets of 1-to-2 mm-diam. with fuel layer up to 100 um-thick. - Target rep-rate delivery. A system for high-rep-rate assembly of the sabot and target (sabot is the target carrier during its acceleration). The report discusses the results, both theoretical and experimental, on modeling a friction-free electro-magnetic acceleration of the levitating assembly "HTSC-Sabot + Target", where HTSCs are the high temperature superconductors. - Injected target on-line tracking. The results of computer experiments on Fourier holography for application to injected target on-line diagnostics and tracking are presented. - Target protection. A system proposed for multiple target protection methods is based on the following principles: 1. Formation of the cryogenic layer with an isotropic ultrafine fuel structure to reduce the layer sensitivity to the external thermal and mechanical loads. 2. Use of friction-free delivery of the "HTSC-Sabot + Target" assembly to reduce the heat flux on the target. 3. Use of conical supports for a target nest in the sabot to reduce the mechanical loads arising during acceleration of the "HTSC-Sabot + Target" assembly. 4. Use of outer coatings (cryogenic, metal) in the target design to reduce risks of cryogenic layer damage as a result of target heating by thermal radiation of the hot chamber walls. 5. Co-injection of a target and a protective cover from freezing gases (D2, Xe) to reduce risks of cryogenic layer damage as a result of target heating by hot residual gases in the reaction chamber. This work was supported by the RF State Task of the Lebedev Physical Institute, by the International Atomic Energy Agency.
|Country or International Organization||Russian Federation|
Prof. Elena Koresheva (P.N.Lebedev Physical Institute of RAS)
Dr Aleksander Akunets (P.N.Lebedev Physical Institute of RAS) Dr Andrei Nikitenko (P.N.Lebedev Physical Institute of RAS) Prof. Boris Kuteev (National Reserch Center Kurchatov Institute) Dr Evgeniy Koshelev (P.N.Lebedev Physical Institute of RAS) Dr Irina Aleksandrova (P.N.Lebedev Physical Institute of RAS)