A medium fidelity CESOL (Core-Edge-Scrape Off Layer) workflow for fast analysis of Fusion Pilot Plant designs.*

Recent efforts in the public and private fusion communities have focused on delivering a reliable, commercially relevant Fusion Pilot Plant (FPP) on an accelerated timeline. A successful FPP design requires optimization of numerous components across the whole device, none of which can be considered in isolation. Modeling such a complex system is a significant, essential task, and must be approached using a set of self-consistent, multi-fidelity, multi-physics simulation tools. While high fidelity simulations remain the gold standard for calculation of e.g., plasma profiles and engineering components, in the initial stages we need the ability to sample a large parameter space and rapidly assess design feasibility before homing in on an ideal design. Here we present an implementation of a medium fidelity Core-Edge-Scrape Off Layer (CESOL) capability, as a part of the larger Fusion REactor Design and Assessment (FREDA) framework, to provide fast fusion plasma calculation and optimization. The CESOL workflow uses IPS-FASTRAN to couple the core code TGLF, an EPED surrogate model for the edge region, and the C1 1D plasma transport code for the SOL. We will show an updated EPED surrogate model used to couple with C1, and initial results for broad scans in a Compact Advanced Tokamak (CAT)-like parameter design space.