Helium Accumulation Effects Using a Benchmarked Zero-Dimensional Model

Multidimensional transport simulations using the BALDUR code have been used to examine the correlation between the effective global helium particle confinement time and the edge recycling coefficient with profile effects included. This provides a way to benchmark the widely used zero-dimensional model so that a first-order correction for these effects is possible. It is shown that the predictions of the effect of recycling on helium confinement using the benchmarked zero-dimensional correlation agrees fairly well with the BALDUR results.