Development of a systems analysis code for fusion DEMO reactor design

Nakamura, Makoto; Kemp, R.*; Uto, Hiroyasu; Tobita, Kenji; Ward, D. J.*; Hamamatsu, Kiyotaka; Federici, G.*

We report recent efforts towards improvement of a systems analysis code TPC for DEMO reactor design. As a first step of such improvement, the calculated results from the two systems codes, TPC and PROCESS, are compared. The main result is that for a fusion reactor with an ITER size and the fusion power of gigawatt, most of the calculation outputs from the two codes are in good agreement while the radiation power losses calculated are somewhat different between the two codes because of difference in the impurity radiation and spatial profile models. In the presentation some issues for development/improvement of systems codes relevant to DEMO plasma physics will be discussed.