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

N. Bertelli; S. Shiraiwa; W. Helou; D. Milanesio; W. Tierens

doi:10.1063/5.0162415

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

N. Bertelli, S. Shiraiwa, W. Helou, D. Milanesio, W. Tierens

Research output: Contribution to journal › Conference article › peer-review

Abstract

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. S- and Z-matrices and wave electric field are compared showing an excellent agreement among these codes.

Original language	English
Article number	060006
Journal	AIP Conference Proceedings
Volume	2984
Issue number	1
DOIs	https://doi.org/10.1063/5.0162415
State	Published - Aug 18 2023
Externally published	Yes
Event	24th Topical Conference on Radio-frequency Power in Plasmas - Annapolis, United States Duration: Sep 26 2022 → Sep 28 2022

Funding

This work was supported by the U.S. Department of Energy under contract number DE-AC02-09CH1146 and IO contracts IO/20/CT/4300002118 and IO/20/CT/4300002150. This research also used resources of the National Energy Research Scientific Computing Center (NERSC), a U.S. Department of Energy Office of Science User Facility located at Lawrence Berkeley National Laboratory, operated under Contract No. DE-AC02-05CH11231. The views and opinions expressed herein do not necessarily reflect those of the ITER Organization.

Funders	Funder number
U.S. Department of Energy	IO/20/CT/4300002150, DE-AC02-09CH1146
Office of Science
Lawrence Berkeley National Laboratory	DE-AC02-05CH11231

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1063/5.0162415

Cite this

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abstract = "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. S- and Z-matrices and wave electric field are compared showing an excellent agreement among these codes.",

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

Abstract

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UN SDGs

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