Reduced physics model of the tokamak Scrape-Off-Layer for pulse design

The dynamic interplay between the core and edge plasma has important consequences in confinement heating of fusion plasma. transport Scrape-Off-Layer (SOL) imposes boundary conditions on plasma, neutral through SOL influences sourcing. In order to better study these effects a self-consistent, time-dependent fashion with reasonable turn-around time, reduced model is needed. this paper we introduce Box Model, that calculates temperature density given core-to-edge particle power fluxes recycling coefficients. analytic nature Model allows one readily incorporate physics solvers for pulse design applications control room. Here demonstrate such coupling solver TRANSP compare results measurements, obtained Thomson scattering Langmuir probes, an NSTX discharge. Implications future interpretive predictive simulations are discussed.