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10-15 May 2021
Virtual Event
Europe/Vienna timezone
The Conference will be held virtually from 10-15 May 2021

Simulation of Heating and Current Drive Sources for various Scenarios of the ITER Research Plan using the IMAS H&CD Workflow

14 May 2021, 14:00
4h 45m
Virtual Event

Virtual Event

Regular Poster Magnetic Fusion Theory and Modelling P8 Posters 8

Speaker

Mireille SCHNEIDER (ITER Organization)

Description

The ITER Integrated Modelling & Analysis Suite (IMAS) has been developed to provide a standard framework for supporting scenario preparation and plasma operation through a standardised data model designed to support both simulated and experimental data 1. The IMAS platform provides a high degree of modularity between physics models and physics workflows. One of the most sophisticated physics workflows developed so far in IMAS is for Heating and Current Drive (H&CD) modelling. The H&CD workflow developed by the ITER Organization is based upon an earlier development carried out within the European Integrated Modelling activities 2. It has been written in Python for its availability and portability, and its extensive use within the modelling community worldwide.

The IMAS Python H&CD workflow offers the capability to be coupled to any transport solver adapted to IMAS, which is a natural consequence of the modular nature of the IMAS standardised approach. It can simulate the synergy between H&CD sources and provides a high degree of modularity between various H&CD models for all the heating sources available in ITER, i.e. the Electron Cyclotron Resonance Heating (ECRH), the Ion Cyclotron Radio Heating (ICRH), the Neutral Beam Injection (NBI), and the fusion-born alpha particles, thus covering any scenario of the ITER Research Plan. The list of H&CD codes currently available in the IMAS H&CD workflow is provided in Table 1.

Table 1

The modelling results of the H&CD workflow are presented for various scenarios of the ITER Research Plan. They are primarily based upon scenarios computed with the METIS transport solver [16], available within the IMAS scenario database [17]. The scenarios considered cover both Pre-Fusion Power Operation (PFPO) and the Fusion Power Operation (FPO) phases and address the optimization of H&CD for their realization. For PFPO the specific issues related to the time evolution of 3rd harmonic ECRH absorption for 5 MA / 1.8 T scenarios and the fast ion distributions resulting from NBI modelling for 7.5 MA / 2.65 T scenarios are addressed. The results of this NBI modelling are further exploited to study the MHD stability of ITER NBI ions in such scenarios with two beam configurations in an accompanying paper at the conference [18]. Finally, the evaluation of the plasma heating sources (ECRH, ICRH, NBI and alpha heating) during the whole plasma evolution in the ITER baseline DT Q = 10 scenario is presented. As an illustration, Figure 1 shows the NBI deposition and power profiles calculated by the NEMO and RISK codes within the IMAS H&CD workflow.

Figure 1

1 F. Imbeaux et al, Nucl. Fusion 55 (2015) 123006
2 G. Falchetto et al, 26th IAEA Fusion Energy Conference, Kyoto, Japan (2016)
[3] A.P. Smirnov and R.W Harvey (2003) Technical Report Report CompX-2000-01 Ver. 2
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[9] E. Hirvijoki et al, Comp. Phys. Comm., 184,, 2014
[10] M. Schneider et al, Plasma Phys. Control. Fusion 47 (2005) 2087–2106
[11] D. Van Eester and E. Lerche, Plasma Phys. Control. Fusion, 53, 2011.
[12] O. Asunta et al, Comp. Phys. Comm., 188, 2015
[13] M. Schneider et al, Nucl. Fusion 51 (2011) 063019
[14] M. Schneider et al, Nucl. Fusion 55 (2015) 013003
[15] P. Sirén et al, Nucl. Fusion 58 (2018) 016023
[16] J.F. Artaud et al, Nucl. Fusion 58 (2018) 10500
[17] S.D. Pinches et al, this conference
[18] P. Lauber et al, this conference

Affiliation ITER Organization
Country or International Organization France

Primary authors

Mireille SCHNEIDER (ITER Organization) Verena Mitterauer (ITER Organization) Simon Pinches (ITER Organization) Thomas Johnson (KTH Royal Institute of Technology, Stockholm, Sweden) Dr Ignacio Arbina (Barcelona Supercomouting Centre) Prof. Jean-Francois Artaud (CEA, IRFM) Dirk Van Eester (LPP-ERM/KMS) Lorenzo Figini (Istituto per la Scienza e la Tecnologia dei Plasmi, CNR, Italy) Shinichiro Kojima (Kyushu Univ., Japan) Ernesto Lerche (LPP-ERM/KMS, Association EUROFUSION-Belgian State, TEC partner, Brussels, Belgium) Mervi Mantsinen (ICREA and Barcelona Supercomputing Center) Olivier Sauter Dr Seppo Sipilä (Department of Applied Physics, Aalto University) Dr Jari Varje (VTT) Dr Laurent Villard (EPFL-SPC, CH-1015 Lausanne, Switzerland)

Presentation Materials