Protecting ITER walls: fast ion power loads in 3D magnetic field
Artikel i vetenskaplig tidskrift, 2017

The fusion alpha and beam ion with steady-state power loads in all four main operating scenarios of ITER have been evaluated by the ASCOT code. For this purpose, high-fidelity magnetic backgrounds were reconstructed, taking into account even the internal structure of the ferritic inserts and tritium breeding modules (TBM). The beam ions were found to be almost perfectly confined in all scenarios, and only the so-called hybrid scenario featured alpha loads reaching 0.5 MW due to its more triangular plasma. The TBMs were not found to jeopardize the alpha confinement, nor cause any hot spots. Including plasma response did not bring dramatic changes to the load. The ELM control coils (ECC) were simulated in the baseline scenario and found to seriously deteriorate even the beam confinement. However, the edge perturbation in this case is so large that the sources have to be re-evaluated with plasma profiles that take into account the ECC perturbation.

test blanket modules

TBM

3-dimensional wall

ITER power loads

non-axisymmetric magnetic field

fast ion confinement

Författare

Taina Kurki-Suonio

Chalmers, Fysik, Subatomär fysik och plasmafysik

K. Sarkimaki

Aalto-Yliopisto

S. Akaslompolo

Max Planck-institutet

Aalto-Yliopisto

J. Varje

Aalto-Yliopisto

Y. Liu

CCFE

S. Sipila

Aalto-Yliopisto

O. Asunta

Tokamak Energy Ltd

Aalto-Yliopisto

E. Hirvijoki

Princeton Plasma Physics Laboratory

A. Snicker

Aalto-Yliopisto

Max Planck-institutet

J. Terava

Aalto-Yliopisto

M. Cavinato

F4E

M. Gagliardi

F4E

V. Parail

CCFE

G. Saibene

F4E

Plasma Physics and Controlled Fusion

0741-3335 (ISSN) 1361-6587 (eISSN)

Vol. 59 1

Ämneskategorier

Fusion, plasma och rymdfysik

DOI

10.1088/0741-3335/59/1/014013