ITER divertor plasma response to time-dependent impurity injection

Simulation of Runaway Electron Generation During Plasma Shutdown by Impurity Injection in ITER

Disruptions in a large tokamak can cause serious damage to the device and should be avoided or mitigated. Massive gas or killer pellet injection are possible ways to obtain a controlled fast plasma shutdown before a natural disruption occurs. In this work, plasma shutdown scenarios with different types of impurities are studied for an ITER-like plasma. Plasma cooling, runaway generation and the...

Divertor interferometer diagnostic for ITER

In the harsh environment of the divertor region in ITER, plasmas spanning a huge density range from 1019 to 1022 m−3 are anticipated making measurement of the electron density particularly challenging. For any reasonable wavelength choice, the total phase measured by a conventional two-color interferometer system is always 2 and therefore subject to fringe counting errors. This problem can be r...

Hydrogenic retention of high-Z refractory metals exposed to ITER divertor relevant plasma conditions

1) FOM-Institute for Plasma Physics Rijnhuizen, www.rijnhuizen.nl, Assocaition EURATOMFOM, Trilateral Euregio Cluster, Nieuwegein, the Netherlands 2) Instituto Tecnológico e Nuclear, Sacavém, Portugal 3) Max-Planck-Institut für Plasmaphysik, Association EURATOM, Garching, Germany 4) Leiden Institute of Chemistry, Gorlaeus laboratory Leiden, The Netherlands 5) Eindhoven University of Technology,...

Divertor Requirements and Performance in ITER

Status of the Engineering Design of the ITER Divertor

In this paper we present the main features of the ITER Divertor final dlesign from an engineering point of view and describe the present choices regarding layout, geometry and material selection. The assessment of the detailed design shows that the divertor is able to withstand the thermal and electromagnetic loading conditions foreseen for ITER, and that the estimated lifetime of the Plasma Fa...