Neutronics assessment of EU DEMO alternative divertor configurations

Neutronics assessment of EU DEMO alternative divertor configurations

Neutronics assessment of EU DEMO alternative divertor configurations 150 150 UKAEA Opendata
UKAEA-CCFE-PR(21)14

Neutronics assessment of EU DEMO alternative divertor configurations

As a demonstration fusion power plant, EU DEMO has to prove the maturity of fusion technology and its viability for electricity

production. The central requirements for DEMO rest on its capability to generate significant net electric power to the grid (300MW

to 500 MW) safely and consistently. Plant availability and lifetime will approach that of a commercial fusion power plant. Operating

at such regimes presents many complex challenges, of which one is plasma exhaust. To mitigate the risk that the implementation

in preceding experimental devices, namely ITER, does not extrapolate to the requirement of DEMO, alternative solutions must be

sought. The investigation of alternative divertor configurations was born out of this motive, seeking to resolve a ‘critical’ challenge

for the realisation of DEMO. In this paper, we study the neutronics performance of three concepts: Single Null (SN), Super-X

(SX) and X-divertor (XD). This is the first time a preliminary analysis of alternative configurations to the SN baseline has been

performed. The shielding proposals and design recommendations presented herein should be integrated with other engineering and

physics constraints in future iterations of the chosen divertor concept.

Collection:
Journals
Journal:
Fusion Engineering and Design
Publisher:
Elsevier