Core-SOL Modelling of Neon Seeded JET Discharges with the ITER-like Wall

Core-SOL Modelling of Neon Seeded JET Discharges with the ITER-like Wall

Core-SOL Modelling of Neon Seeded JET Discharges with the ITER-like Wall 150 150 Mathew

Five ELMy H-mode Ne seeded JET pulses have been simulated with the self-consistent core-SOL model COREDIV. In this five pulse series only the Ne seeding rate was changed shot by shot, allowing a thorough study of the effect of Ne seeding on the total radiated power and of its distribution between core and SOL to be made. The increase in the simulations of the Ne seeding rate level above that achieved in experiments shows saturation of the total radiated power at a relatively low radiated-heating power ratio ( f rad = 0 . 60) and a further increase of the ratio of SOL to core radiation, in agreement with the reduction of W release at high Ne seeding level. In spite of the uncertainties caused by the simplified SOL model of COREDIV (neutral model, absence of ELMs and slab model for the SOL), the increase of the perpendicular transport in the SOL with increasing Ne seeding rate, which allows to reproduce numerically the experimental distribution core-SOL of the radiated power, appears to be of general applicability.

Collection:
Journals
Journal:
Contributions to Plasma Physics
Publisher:
Wiley
Published date:
07/01/2016