https://doi.org/10.1051/epjconf/202327701004
New modelling capabilities to support the ITER EC H&CD System optimisation and preparation of plasma operation
1
ITER Organization, Route de Vinon sur Verdon, 13067 Saint Paul Lez Durance Cedex, France
2
UKAEA, Culham Science Centre, Abingdon, OX14 3DB, United Kingdom
3
Korea Institute of Fusion Energy (KFE), Daejeon 34133 Republic of Korea
4
DAES, Genève, Switzerland
* Corresponding author: melanie.preynas@iter.org
Published online: 23 February 2023
The ITER Electron Cyclotron Resonance Heating (ECRH) & Current Drive (ECCD) system is planned to be progressively installed and commissioned following the four stage approach of the ITER Research Plan. Starting with an injection of up to 5.8 MW from one Upper Launcher (UL) in the vacuum vessel to assist the plasma breakdown during First Plasma (FP) operation, the system will then be extended to achieve a capability of 20 MW injected power in Pre-Fusion Plasma Operation (PFPO) and Fusion Power Operation (FPO) phases. Development of optical modelling was required to characterize the optical performance of the FP configuration with the so-called First Plasma Protection Components. An optical 3D model using Zemax OpticStudio® has been developed and extended to the UL. Effects of higher order modes, thermal deformations and tolerances on the UL functionality have been characterized and are presented. Finally, in preparation of plasma operation and in the frame of the EC system upgrade layout optimisation, ECRH-ECCD modelling is being undertaken within the ITER Integrated Modelling and Analysis (IMAS) suite.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
