Details

Autor(en) / Beteiligte

• Suárez López, G
• Cianciosa, M
• Lunt, T
• Tierens, W
• Bilato, R
• Birkenmeier, G
• Bobkov, V
• Dunne, M
• Ochoukov, R
• Strumberger, E
• Suttrop, W
• Willensdorfer, M
• Zhang, W
• Zohm, H
• Upgrade team, the ASDEX
• team, EUROfusion-MST1

Titel

Validation of high-fidelity ion cyclotron range of frequencies antenna coupling simulations in full 3D geometry against experiments in the ASDEX Upgrade tokamak

Ist Teil von

• Plasma physics and controlled fusion, 2020-12, Vol.62 (12), p.125021

Ort / Verlag

United States: IOP Publishing

Erscheinungsjahr

2020

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We address the validation of finite elements ion cyclotron range of frequencies (ICRF) antenna coupling simulation against experiments performed in the ASDEX Upgrade tokamak. Measurements of the loading resistance in ICRF-heated, magnetically-perturbed 3D plasma discharges are compared against numerical predictions of the RAPLICASOL code. To this end, the 3D induction field and the 3D density profile are modeled by concatenating the PARVMEC, BMW and EMC3-EIRENE codes. The 3D density is input to RAPLICASOL, where full-wave simulations are performed on a finite element mesh retaining full 3D geometry in the ICRF antenna model and the plasma description. The results are further compared with RAPLICASOL simulations using a 1D density profile as measured at the outboard midplane in the same experiments. We find that simulations using a 1D density profile overestimate the change in loading resistance by a factor of ∼197 − 248%, while simulations using the full 3D density profile are in agreement with experiments within a factor ∼16%.