3D full wave fast wave modeling with realistic antenna geometry and SOL plasma

Conference · Tue Sep 01 04:00:00 EDT 2020

OSTI ID:1665955

Bertelli, Nicola ^[1]; Shiraiwa, S ^[2]; Kramer, G. ^[1]; Yang, Xiaokang ^[3]; Dehaas, T ^[3]; Lau, Cornwall ^[4]; Compernolle, Bart Van ^[5]; Kim, Eunhwa ^[1]; Wright, John ^[6]

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1. Princeton Plasma Physics Laboratory (PPPL)
2. Massachusetts Institute of Technology (MIT), Plasma Sciences and Fusion Center
3. TAE Technologies
4. ORNL
5. UCLA
6. University of Wisconsin, Madison

This paper reports the significant advancement of our ability to model and to understand how RF waves interact with the SOL plasma, by simulating the full torus 3D SOL plasma together with the antenna and core plasma. We introduce and use a recently developed and open source code, Petra-M, which was constructed on the scalable MFEM C++ finite element library, and performed 3D full wave simulations in the HHFW regime for both NSTX-U and LAPD plasmas. A first full wave simulation for a full 3D torus including a realistic antenna geometry and SOL plasma region for NSTX-U is presented. A scan of the antenna phasing shows a strong interaction between FWs and the SOL plasma for lower antenna phasing, which is consistent with previous NSTX HHFW observations. The effect of the 3D wave field on the fast ion population from NBI beams in NSTX-U is also discussed by using the 3D field obtained from the Petra-M simulations in the full-orbit following particle SPIRAL code. On LAPD, 3D full wave simulations of a new HHFW 4-strap antenna recently installed by TAE Technologies on LAPD are performed showing a qualitative agreement with experimental data.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE; USDOE Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1665955
• Country of Publication: United States
• Language: English