Benchmark between antenna code TOPICA, RAPLICASOL and Petra-M for the ICRH ITER antenna

Journal Article · 17 August 2023 · AIP Conference Proceedings

DOI: https://doi.org/10.1063/5.0162415 · OSTI ID:2004944

Bertelli, N. ^[1]; Shiraiwa, S. ^[1]; Helou, W. ^[2]; Milanesio, D. ^[3]; Tierens, W. ^[4]

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1. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
2. ITER Organization, St. Paul Lez Durance (France)
3. Politecnico di Torino (Italy)
4. Max-Planck-Institut für Plasmaphysik, Garching (Germany)

ITER will be equipped with three plasma heating systems: neutral beam (NB), electron cyclotron (EC), and ion cy-clotron resonance heating (ICRH). The latter consists of two identical ICRH antennas to deliver 20 MW to the plasma (baseline, upgradable to 40 MW). ICRH will play a crucial role in the ignition and sustainment of burning plasmas in ITER. A high fidelity and robust modeling effort to understand the interaction of the IC waves with the scrape-off-layer (SOL) plasma is a very important aspect. Among the main important research topics, we have the assessment of the antenna loading for different plasma scenarios, the role of the lower hybrid resonance in front of the antenna and how to include it in our models, and the RF sheath boundary conditions to evaluate the antenna impurity generation. In this work, we tackle the first of these by reporting on ICRF simulations employing the Petra-M code, which is an electromagnetic simulation tool for modeling RF wave propagation based on MFEM [http://mfem.org] for the ITER ICRH antenna. Moreover, a benchmark between the well tested antenna codes TOPICA, RAPLI-CASOL, which is based on COMSOL [www.comsol.com], and the Petra-M code is also presented. In conclusion, S- and Z-matrices and wave electric field are compared showing an excellent agreement among these codes.

• Research Organization: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
• Grant/Contract Number: AC02-05CH11231; AC02-09CH11466
• OSTI ID: 2004944
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 2984; ISSN 0094-243X
• Publisher: American Institute of Physics (AIP)Copyright Statement
• Country of Publication: United States
• Language: English