Toward DEMO Power Plant Concept Selection Under Epistemic Uncertainty

To make informed decisions during the concept selection activities of a nuclear fusion power plant, it is necessary to evaluate impact uncertainties on feasibility and performance each concept. A framework for uncertainty quantification sensitivity analysis has been developed PROCESS systems code allow direct comparison different DEMOnstration plant (DEMO) concepts. account epistemic uncertainty, was based interval analysis, where only bounds have be assumed uncertain parameter, propagated with Monte Carlo Latin hypercube sampling. The pinching method, consisting reducing input parameter baseline point one by measuring reduction in output interval. Its application shown using European H-mode DEMO as use case. Results suggest that thermal He-4 fraction plasma, plasma elongation, H-factor should examined further reduce risks its feasibility.