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Contents 1 Theory and simulation of energetic particle dynamics and ensuing collective behaviors in fusion plasmas 2 Objectives of the NLED project 2015-17 3 Main ongoing research activities in 2017 4 Activity Reports from previous years 5 Upcoming Web Seminars and Rehearsals 6 Publications/presentations in 2016 7 Publications/presentations in 2015 8 Publications/presentations in 2014

Theory and simulation of energetic particle dynamics and ensuing collective behaviors in fusion plasmas

[NonLinear Energetic particle Dynamics (NLED)]

Principal Investigator:

Fulvio Zonca

Project Participants:

Alessandro Biancalani, Alberto Bottino, Matthias Borchardt, Sergio Briguglio, Nakia Carlevaro, Claudio Di Troia, Remi Dumont, Matteo Faganello, Giuliana Fogaccia, Valeria Fusco, Xavier Garbet, Ralf Kleiber, Axel Könies, Philipp Lauber, Alexander Milovanov, Oleksiy Mishchenko, Giovanni Montani, Gregorio Vlad, Xin Wang

External Collaborators (not supported by NLED funding):

Ilija Chavdarovski (MPPC PostDoc Fellow), Michael Cole (PhD Student), Matteo Falessi (PhD Student), Thomas Hayward (PhD Student), Malik Idouakass (PhD Student), Pierluigi Migliano (PostDoc Fellow), Francesco Palermo (PostDoc Fellow), Mirjam Schneller (EUROfusion Fellow till Feb.1st 2016), Christoph Slaby (PhD Student), David Zarzoso (AMU Faculty)

Participating Research Institutions:

Aix Marseille Univerity, CEA Cadarache, ENEA Frascati, IPP Garching, IPP Greifswald

Objectives of the NLED project 2015-17

The main aim of this project proposal is to assess the essential physics elements for successful numerical simulation of Alfvénic fluctuations and energetic particle behaviors in fusion plasmas. A variety of numerical codes adopting both gyrokinetic as well as hybrid fluid-kinetic approaches will be employed to accomplish this task. Reference plasma scenarios, including these fundamental processes, will be extracted from experimental observations for carrying out numerical studies in conditions of practical interest. Meanwhile, the use of physical models of increasing complexity within numerical simulation codes will allow to clearly identify the importance of accounting for realistic plasma nonuniformity and magnetic field geometry for successful comparisons of numerical simulation results with experimental observations. Furthermore, benchmarking of codes developed for analyzing these physics in tokamak and stellarator devices will provide deeper insights.

Standardized numerical diagnostics, in particular for energetic-particle phase-space, have been developed as part of the 2014 NLED ER Project; and are foreseen as essential ingredient of this project proposal as well as prerequisite for verification of numerical simulation results and code benchmarking for both linear and nonlinear dynamics. Linear simulations will be focused on benchmarking numerical simulations of different types of Alfvénic oscillations with perturbative and non-perturbative fast particle drive; and on the analysis of electron- fishbone stability properties. Meanwhile, nonlinear simulations will address perturbative analyses of multi-mode (Alfvén Eigenmode) scenarios including realistic damping, as well as nonlinear electron-fishbone saturation and self-consistent supra-thermal electron transport. For long time-scale simulations, realistic energetic particle sources and collisions will be taken into account.

Main ongoing research activities in 2017

Activity Reports from previous years

• [1] 2014 NLED Activity Report. PDF
• [2] 2015 NLED Activity Report. PDF
• [3] 2016 NLED Mid-Term Report. PDF
• [4] 2016 NLED Activity Report. PDF

Upcoming Web Seminars and Rehearsals

• [1] First NLED Workshop, February 24 - 26, 2016, by remote participation. Agenda. PDF (Information on presentations and material can be requested from presenting authors.)
• [2] EPS - ICPP Rehearsals, June 24, 2016. Agenda. PDF. Rehearsals of presentations at the 43rd EPS Conference on Plasma Physics, Leuven, Belgium, July 4 -8 (Nakia Carlevaro, Michael Cole); and at the 18th International Congress on Plasma Physics, June 27 - July 1, Kaohsiung, Taiwan (Sergio Briguglio, David Zarzoso). (Information on presentations and material can be requested from presenting authors.)
• [3] Varenna-Lausanne Rehearsals, July 26, 2016. Agenda. PDF. Rehearsals of presentations at the Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas, Varenna, Italy, August 29 - September 2 (Alessandro Biancalani). (Information on presentations and material can be requested from presenting authors.)
• [4] 26th IAEA - FEC Rehearsals, September 20, 2016. Agenda. PDF. Rehearsals of presentations at the The 26th IAEA Fusion Energy Conference, Kyoto, Japan, October 17 - 22 (Alessandro Biancalani, Gregorio Vlad, Xin Wang). (Information on presentations and material can be requested from presenting authors.)
• [5] NLED Seminar by Philipp Lauber: Recent results within the NLED framework on GK-MHD comparison and analytical LIGKA FOW model; November 24, (2016) at 10.00 am. (Information on presentations and material can be requested from presenting authors.)
• [6] NLED Seminar by Matteo Falessi: Gyrokinetic Theory for particle transport in fusion plasmas; December 19, (2016) at 11.00 am. (Information on presentations and material can be requested from presenting authors.)

Publications/presentations in 2016

• [1] A. Biancalani, A. Bottino, S. Briguglio, A. Könies, Ph. Lauber, A. Mishchenko, E. Poli, B. D. Scott, and F. Zonca Linear gyrokinetic particle-in-cell simulations of Alfvén instabilities in tokamaks. Physics of Plasmas 23, 012108 (2016). PDF
• [2] X. Wang et al. Structure of wave-particle resonances and Alfvén mode saturation. Physics of Plasmas 23, 012514 (2016). PDF
• [3] L. Chen and F. Zonca. Physics of Alfvén waves and energetic particles in burning plasmas. Reviews of Modern Physics 88, 015008 (2016). PDF (20% NLED support)
• [4] N. Carlevaro, A.V. Milovanov et al. Mixed Diffusive-Convective Relaxation of a Warm Beam of Energetic Particles in Cold Plasma. Entropy 18, 143 (2016). PDF
• [5] F. Zonca et al. Nonlinear dynamics and transport processes in the beam-plasma system. Invited talk at the 10^th West Lake International Symposium on Magnetic Fusion, and 12^th Asia Pacific Plasma Theory Conference, Hangzhou, China, May 9-13, 2016. PDF
• [6] G. Fogaccia, G. Vlad, S. Briguglio Linear benchmarks between the hybrid codes HYMAGYC and HMGC to study energetic particle driven Alfvénic modes. Nuclear Fusion, 56:112004, 2016. PDF.
• [7] G. Vlad, V. Fusco, S. Briguglio, G. Fogaccia, F. Zonca, X. Wang Theory and modelling of electron fishbones. New Journal of Physics, Special Issue on "Fast particle instabilities and transport in fusion, space and astrophysics plasmas", 18:105004, 2016; doi:10.1088/1367-2630/18/10/105004. PDF
• [8] G. Vlad, V. Fusco, S. Briguglio, C. Di Troia, G. Fogaccia, F. Zonca, X. Wang Linear and nonlinear dynamics of electron fishbones. 26th IAEA Fusion Energy Conference (FEC 2016) Kyoto, Japan 17–22 October 2016, Poster presentation. Paper TH/P4-6.
• [9] X. Wang, S. Briguglio, M. Schneller, Ph. Lauber, V. Fusco, C. Di Troia, G. Fogaccia, G. Vlad, F. Zonca On the structure of wave-particle interactions and nonlinear Alfvenic fluctuation dynamics. To be presented at the 26th IAEA Fusion Energy Conference (FEC 2016) Kyoto, Japan 17–22 October 2016, Poster presentation.
• [10] X. Wang, S. Briguglio A single Alfven mode saturation by nonlinear wave-particle interaction. Invited paper for the New Journal of Physics "Fast particle instabilities and transport in fusion, space and astrophysics plasmas", New Journal of Physics, 18(8):085009, 2016
• [11] X. Wang, S. Briguglio, Ph. Lauber, F. Zonca Structure of wave-particle interactions in nonlinear Alfven fluctuation dynamics. Oral talk at the 10^th West Lake International Symposium on Magnetic Fusion, and 12^th Asia Pacific Plasma Theory Conference, Hangzhou, China, May 9-13, 2016.
• [12] N. Carlevaro, G. Montani, X. Wang, F. Zonca, Convection and diffusion in the bump-on-tail model: interpretation of fast particle-TAE interaction in ITER. Poster presentation at the 43rd EPS Conference on Plasma Physics, Leuven, Belgium, July 4-8, 2016.
• [13] M. Faganello, M. Idouakass, H. Berk, X. Garbet, S. Benkadda, Nonlinear hydrid simulations of precessional Fishbone instability. Invited talk at the 5^th International Workshop on the Theory and Applications of the Vlasov equation (Vlasovia), Copanello, Italy, May 30-Jun 2 (2016).
• [14] László Horváth, Gergely Papp, Philipp Lauber, et al: Experimental investigation of the radial structure of energetic particle driven modes, Nucl. Fusion, Special issue of papers arising from the 14th IAEA Technical Meeting on Energetic Particles in Magnetic Confinement Systems (Vienna, Austria, 2015), accepted: 15 April 2016 (30% NLED support)
• [15] Ph. Lauber, Energetic Particle modeling for JT-60 SA, 5th Research and Coordination Meeting JT60-SA Planning Meeting, Naka, 16.-18.5. 2016 (30% NLED support)
• [16] Ph. Lauber et al., NLED-AUG reference case, http://www2.ipp.mpg.de/~pwl/NLED_AUG/data.html, 2015/2016 (100% NLED support)
• [17] A. Biancalani, A. Bottino, A. Könies, Ph. Lauber, A. Mishchenko, B. Scott, F. Zonca Nonlinear GK investigation of energetic-particle-driven instabilities in tokamaks. Oral talk at the 10^th West Lake International Symposium on Magnetic Fusion, and 12^th Asia Pacific Plasma Theory Conference, Hangzhou, China, May 9-13, 2016.
• [18] A. Biancalani, A. Bottino, Ph. Lauber, B. Scott, and F. Zonca Nonlinear interplay of Alfvén instabilities and energetic particles in tokamaks. Invited talk at the Joint Varenna-Lausanne International Workshop, Varenna, Italy, 29 August - 2 September 2016.
• [19] A. Biancalani, M. Cole, A. Bottino, A. Könies, Ph. Lauber, A. Mishchenko, B. Scott, and F. Zonca Gyrokinetic investigation of the nonlinear interplay of Alfvén instabilities and energetic particles in tokamaks. Oral presentation at the 26th IAEA Fusion Energy Conference (FEC 2016) Kyoto, Japan, 17–22 October 2016.
• [20] N. Carlevaro, G. Montani, D. Terzani, On the viability of the single wave model for the beam plasma instability. Europhys. Lett. 115, 45004 (2016). PDF
• [21] Z. Qiu, L. Chen, and F. Zonca Effects of energetic particles on zonal flow generation by toroidal Alfvén eigenmode. Physics of Plasmas 23, 090702 (2016). PDF (20% NLED support)
• [22] Z. Qiu, L. Chen, and F. Zonca Fine structure zonal flow excitation by beta-induced Alfvén eigenmode. Nuclear Fusion 56, 106013 (2016). PDF (20% NLED support)
• [23] M. Idouakass, M. Faganello, H. L. Berk, X. Garbet, and S. Benkadda Linear study of the precessional fishbone instability Physics of Plasmas 23, 102113 (2016).
• [24] Ph. Lauber, Alfvén Eigenmode stability in DEMO, PMI-5.2.5-T002, https://idm.euro-fusion.org/?uid=2M4Z73, technical report, accepted January 2016.
• [25] S. Briguglio, M. Schneller, X. Wang, C. Di Troia, T. Hayward, V. Fusco, G. Vlad and G. Fogaccia, Saturation of Alfvén modes in Tokamak plasmas investigated by Hamiltonian mapping techniques. To appear in Nuclear Fusion
• [26] ] S. Briguglio, X. Wang and M. Schneller, Nonlinear dynamics of Alfvén modes in Tokamak plasmas: an investigation of saturation mechanisms based on Hamiltonian mapping techniques, Invited talk at the 18th International Congress on Plasma Physics (ICPP 2016)
• [27] S. Briguglio, M. Schneller and X. Wang, Radial displacement of resonating ions induced by single-n modes: gap modes versus EPMs, 17th Meeting of the ITPA Topical Group on Energetic Particles, 24th – 26th October 2016, Kyoto University, Kyoto, Japan
• [28] F. Palermo et al, EPL 115:15001,2016
• [29] A. Biancalani et al, Phys. Plasmas 23:112115, 2016
• [30] A. Biancalani, et al, submitted to PPCF, 2016
• [31] M. Cole et al, submitted to PoP, 2016
• [32] A. Biancalani et al, Plas@par conference, Paris, January 22nd (2016) (POSTER)
• [33] M. Cole et al, European Physical Society 43rd Conference on Plasma Physics, Leuven (Belgium), 5 July (2016) (ORAL)
• [34] A. Mishchenko et al, Gyrokinetic Particle Simulation: A Symposium in Honor of Wei-li Lee, UCI, July 18 - 22, 2016 (ORAL)
• [35] A. Biancalani et al, 14th Conference of the French Society of Physics, Plasma division, Nancy (France), 8-9 June 2016 (POSTER)

Publications/presentations in 2015

• Complete list of publications and presentations in 2015.

Publications/presentations in 2014

• Complete list of publications and presentations in 2014.