Updates to C1, a Scrape-Off Layer (SOL) fluid transport code, and its integration into a medium fidelity Core-Edge-SOL (CESOL) workflow.

There has been recent emphasis on developing multi-fidelity integrated modeling workflows for simulating plasma scenarios in current experimental devices, as well as for designing a Fusion Pilot Plant (FPP). While high-fidelity simulations remain critical, low to medium fidelity models have been recognized as an important tool, as they provide the capability to rapidly sample and assess large parameter ranges that would be unfeasible in high fidelity. Previous work presented the medium fidelity CESOL workflow using the 1D fluid transport code C1 for the Scrape-Off-Layer (SOL) component. This work extends the fidelity of CESOL workflow by making several improvements to both the numerics and physics of C1, without sacrificing the advantage of reduced computational time. Developments include: moving from a 1D slab geometry to a realistic SOL configuration self-consistent with a MHD equilibrium solution using automatic mesh creation; utilizing the flexibility of the Finite Volume (FV) algorithm to include various particle and energy fluxes with a set of simplified radial transport models to match an experimental scaling of heat flux width in SOL; and coupling to more comprehensive neutral transport component GTNEUT. We compare results from CESOL using the improved C1 code with SOLPS-ITER high-fidelity modeling.