Nuclear analyses of solid breeder blanket options for DEMO: Status, challenges and outlook

•The new innovative SMS blanket concept for DEMO based on the use of the solid breeder was developed.•The MCNP geometry model is fully heterogeneous.•Two concepts are proposed: HCPB with Be12Ti and MLCB with Pb neutron multiplies respectively.•The MCNP simulations were carried out to assess main nuc...

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Bibliographic Details
Published in:Fusion engineering and design 2019-09, Vol.146, p.563-567
Main Authors: Pereslavtsev, Pavel, Hernández, Francisco A., Zhou, Guangming, Lu, Lei, Wegmann, Christian, Fischer, Ulrich
Format: Article
Language:English
Subjects:
Breeder blanket
Breeder reactors
Computer simulation
Design optimization
Neutronics
Segmentation
Solid breeder
Toruses
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Summary:•The new innovative SMS blanket concept for DEMO based on the use of the solid breeder was developed.•The MCNP geometry model is fully heterogeneous.•Two concepts are proposed: HCPB with Be12Ti and MLCB with Pb neutron multiplies respectively.•The MCNP simulations were carried out to assess main nuclear responses of the HCPB and MLCB DEMO reactors.•The significant effect of the heterogeneous geometry is highlighted. This work presents results of the neutronic analyses for an innovative Helium Cooled Pebble Bed (HCPB) blanket concept for DEMO. Comprehensive 3D Monte Carlo particle transport simulations were performed with the MCNP5 code making use of a highly detailed HCPB DEMO torus sector model. The advanced HCPB Single Module Segmentation (SMS) blanket was consequently optimized to accomplish out the design requirements. A completely new Molten Lead Ceramic Breeder (MLCB) SMS blanket utilizing a solid breeder and a Pb neutron multiplier together was also investigated and proved to be an alternative option for DEMO design.
ISSN:0920-3796
1873-7196
DOI:10.1016/j.fusengdes.2019.01.023