8–12 Jun 2026
Karlsruhe Institute of Technology, Campus north
Europe/Berlin timezone

Neutronics Analysis of Ceramic Breeder blankets for the Infinity 2 Stellarator

9 Jun 2026, 10:40
20m
FTU (Karlsruhe Institute of Technology, Campus north)

FTU

Karlsruhe Institute of Technology, Campus north

Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen
Oral Breeding blanket optimisation Fusion Reactor Design and Safety

Speaker

Jonathan Naish (Type One Energy)

Description

Infinity Two is a 350 MWe fusion pilot power plant under development by Type One Energy, designed to be one of the first commercially viable stellarator based fusion energy systems. A central feasibility challenge for this advanced high field stellarator concept is the development of an efficient and fully integrated blanket system. Consequently, the design and optimisation of the breeding blanket form a critical component of the Infinity Two physics basis.
This work presents the application of OpenMC, combined with CAD derived geometries, to optimise a ceramic breeder blanket for maximised tritium production and heat generation. Unstructured mesh techniques are employed to resolve spatial distributions of key nuclear performance metrics across complex blanket geometries. Parametric studies investigate the influence of enriched material fractions, packing density, multiplier material quantity and placement, and overall blanket topology. Across the design space explored, multiple promising configurations are identified, achieving tritium breeding ratios (TBR) greater than 1.25 along with sufficient energy multiplication to support Infinity Two’s 350 MWe power target.

Formatted abstract uploaded? Done.

Author

Jonathan Naish (Type One Energy)

Presentation materials