I. V. Mazul

Bio: I. V. Mazul is an academic researcher. The author has contributed to research in topics: Neutron source & Divertor. The author has an hindex of 4, co-authored 8 publications receiving 160 citations.

The concept of the volumetric neutron source on the basis of the JUST-T tokamak for minor actinides transmutation

Abstract: By concept development of the compact volumetric neutron source on the spherical tokamak JUST basis for minor actinides transmutation with aspect ratio A = 2, some key plasma physics problems are arising: start of discharge; plasma current maintenance in stationary stage; appropriate neutron fluence for transmutation. On the basis of accepted physical and technical preconditions of the concept the combined scenario of current start and ramp-up, its stationary maintenance due to bootstrap effect and drive by neutral particle injection are considered. The plasma current is proposed to be initiated inductively and then bootstrap current will generate with using additional heating by injection of neutral beams. Necessary neutron flux for effective transmutation (Γn ≈ 0.4 MW/m2) will be reached by both plasma-beam reactions and thermal plasma fusion reactions. By the way of preliminary consideration engineering studies of vacuum chamber, toroidal magnetic system, divertor, and blanket with energy multiplicatio...

The European power plant conceptual study

Abstract: Within the European power plant conceptual study (PPCS) four fusion power plant “models”, all based on the tokamak concept, have been developed Two of these models, A and B, were developed considering limited extrapolations both in physics and in technology PPCS model A is based on the WCLL blanket [M Gasparotto et al, DEMO blanket technology R&D results in the EU, Fusion Eng Des 61–62 (2002) 263–271] and on a water-cooled divertor concept PPCS model B is based on the HCPB blanket [M Gasparotto et al, DEMO blanket technology R&D results in the EU, Fusion Eng Des 61–62 (2002) 263–271] and on a helium-cooled divertor concept For each of the more advanced concepts, models C and D, an advanced physics scenario has been identified and combined with advanced blanket concepts that allow higher thermodynamic efficiencies of the power conversion systems Two key innovative developments are worthy of especial note: the development of a scheme for the scheduled replacement of the internal components and the conceptual design for a helium-cooled divertor For all models, systems analyses were used to integrate the plasma physics and technology constraints to produce self-consistent plant parameter sets with approximately optimal economic characteristics In the PPCS models, the favourable, inherent, features of fusion have been exploited to provide substantial safety and environmental advantages The broad features of the conclusions of previous studies have been confirmed for the new models Finally, the PPCS study has highlighted the need for specific design and R&D activities in addition to those already underway within the European long term R&D programme