1. Modelling of pulsed and steady-state DEMO scenarios G. Giruzzi et al
Modelling of pulsed and steady-state DEMO scenarios G. Giruzzi et al. TH/P1-14
Programme carried out in the EU, aiming at selection of the DEMO design
2 DEMO concepts: pulsed (DEMO1) and steady-state (DEMO2), at Pel ~ 500 MW
Scenario assessment performed by iterations of systems codes and various levels of integrated modelling codes
Main scenario issues identified for DEMO1:
compatibility of density profile with known physics
compatibility of temperature profile with 1st principle models (turbulent transport and critical gradients).
plasma dilution and contamination by impurities
compatibility of radiation with divertor protection and fusion performance
Main scenario issues identified for DEMO2:
bootstrap current optimisation
non-inductive CD optimisation
possible use of ITB regimes
high beta MHD limits (e.g., acceptable N/4li range)