• Azarakhsh Jalalvand, Max Curie, SangKyeun Kim, Jaemin Seo, Peter Steiner, Qiming Hu, Andrew Oakleigh Nelson, Egemen Kolemen, M. Curie, Y.-S Na (2025). Multimodal Super-Resolution: Discovering hidden physics and its application to fusion plasmas. Nature Communications, 16, 8506. Link
  • T. Bechtel Amara, S. P. Smith, Z. A. Xing, T. F. Neiser, C. Simpson, A. O. Nelson, et al. (2025). Accelerating Discoveries at DIII-D With the Integrated Research Infrastructure. Frontiers of Physics, 12, 1524041. DOI
  • Craig Michoski, Todd A Oliver, David R Hatch, Ahmed Diallo, Mike Kotschenreuther, David Eldona, Matthew Wallerb, Richard Groebnera, A. O. Nelson (2024). A Gaussian Process Guide for Signal Regression in Magnetic Fusion. Nuclear Fusion, 64, 035001. Link
  • S. K. Kim, R. Shousha, S. M. Yang, Q. Hu, S. H. Hahn, A. Jalalvand, J.-K. Park, N. C. Logan, A. O. Nelson, et al. (2024). Highest fusion performance without harmful edge energy bursts in tokamak. Nature Communications, 15(1), 3990. DOI
  • A O Nelson, L Schmitz, C Paz-Soldan, K E Thome, T B Cote, N Leuthold, F Scotti, M E Austin, A Hyatt, T Osborne (2023). Robust Avoidance of Edge-Localized Modes alongside Gradient Formation in the Negative Triangularity Tokamak Edge. Physical Review Letters, 131, 195101. Link
  • A. Jalalvand, A. A. Kappatou, A. V. Garcia, A. O. Nelson, J. Abbate, M. Austin, G. Verdoolaege, S. L. Brunton, W. W. Heidbrink, E. Kolemen (2022). Alfvén eigenmode classification based on ECE diagnostics at DIII-D using deep recurrent neural networks. Nuclear Fusion, 62, 026007. Link
  • T. A. Bechtel, A. O. Nelson, L. L. Lao, Z. A. Xing, S. P. Smith, R. Nazikian, S. Flanagan, D. Schissel, L. Stephey, R. Thomas, S. Williams, O. Antepara, E. Dart, E. Koleman, W. Tang (2022). Accelerated Workflow for Advanced Kinetic Equilibria. 2022 First Combined International Workshop on Interactive Urgent Supercomputing (CIW-IUS), 1–5. DOI
  • Viraj Mehta, Ian Char, Willie Neiswanger, Youngseog Chung, A. O. Nelson, Mark D Boyer, Egemen Kolemen, Jeff Schneider (2021). Neural Dynamical Systems: Balancing Structure and Flexibility in Physical Prediction. 2021 60th IEEE Conference on Decision and Control (CDC), 3735–3742. Link
  • Youngseog Chung, Ian Char, Willie Neiswanger, Kirthevasan Kandasamy, A. O. Nelson, Mark D Boyer, Egemen Kolemen, Jeff Schneider (2020). Offline Contextual Bayesian Optimization for Nuclear Fusion. Machine Learning and the Physical Sciences Workshop at the 33rd Conference on Neural Information Processing Systems (NeurIPS), 1–12. Link

First Author Publications

  • [92] A. O. Nelson, et al. (2024). Characterization of the ELM-free Negative Triangularity Edge on DIII-D. Plasma Physics and Controlled Fusion, 66, 105014. Link
  • [91] A. O. Nelson, D. T. Garnier, D.J. Battaglia, C. Paz-Soldan, I. Stewart, M. Reinke, A.J. Creely, J. Wai (2024). Implications of vertical stability control on the SPARC tokamak. Nuclear Fusion, 64(8), 086040. DOI
  • [90] A. O. Nelson, C. Vincent, H. Anand, J. Lovell, J. F. Parisi, H. S. Wilson, K. Imada, W. P. Wehner, M. Kochan, S. Blackmore, G. McArdle, S. Guizzo, L. Rondini, S. Freiberger, Carlos Paz-Soldan (2024). First Access to ELM-free Negative Triangularity at Low Aspect Ratio. Nuclear Fusion, 64, 124004. DOI
  • [89] A. O. Nelson, A. W. Hyatt, W. P. Wehner, A. S. Welander, C. Paz-Soldan, T. H. Osborne, H. Anand, K. E. Thome (2023). Vertical Control of DIII-D Discharges with Strong Negative Triangularity. Plasma Physics and Controlled Fusion, 65, 044002. DOI
  • [88] A O Nelson, L Schmitz, C Paz-Soldan, K E Thome, T B Cote, N Leuthold, F Scotti, M E Austin, A Hyatt, T Osborne (2023). Robust Avoidance of Edge-Localized Modes alongside Gradient Formation in the Negative Triangularity Tokamak Edge. Physical Review Letters, 131, 195101. Link
  • [87] A. O. Nelson, Carlos Paz-Soldan, Samuli Saarelma (2022). Prospects for H-mode inhibition in negative triangularity tokamak reactor plasmas. Nuclear Fusion, 62, 096020. DOI
  • [86] A. O. Nelson, Z. A. Xing, O. Izacard, F. M. Laggner, E. Kolemen (2021). Interpretative SOL modeling throughout multiple ELM cycles in DIII-D. Nuclear Materials and Energy, 26, 100883. Link
  • [85] A. O. Nelson, F. M. Laggner, A. Diallo, D. R. Smith, Z. A. Xing, R. Shousha, E. Kolemen (2021). Time-dependent experimental identification of inter-ELM microtearing modes in the tokamak edge on DIII-D. Nuclear Fusion, 61, 116083. Link
  • [84] A. O. Nelson, F. M. Laggner, R. J. Groebner, B. A. Grierson, O. Izacard, D. Eldon, M. Shafer, A. W. Leonard, D. Shiraki, A. C. Sontag, E. Kolemen (2020). Setting the H-mode pedestal structure: variations of particle source location using gas puff and pellet fueling. Nuclear Fusion, 60, 046003. DOI
  • [83] A. O. Nelson, N. Logan, E. Choi, E. J. Strait, E. Kolemen (2020). Experimental evidence of ECCD-based NTM suppression threshold reduction during mode locking on DIII-D. Plasma Physics and Controlled Fusion, 62, 094002. DOI
  • [82] A. O. Nelson, M. E. Austin, E. Kolemen (2019). Electron cyclotron emission based q-profile measurement and concept for equilibrium reconstruction. Plasma Physics and Controlled Fusion, 61, 085013. DOI
  • [81] A. O. Nelson, R. J. La Haye, M. E. Austin, A. S. Welander, E. Kolemen (2019). Simultaneous detection of neoclassical tearing mode and electron cyclotron current drive locations using electron cyclotron emission in DIII-D. Fusion Engineering and Design, 141, 25–29. DOI
  • [80] A. O. Nelson, R. Dee, M. S. Gudipati, M. Horányi, D. James, S. Kempf, T. Munsat, Z. Sternovsky, Z. Ulibarri (2016). New experimental capability to investigate the hypervelocity micrometeoroid bombardment of cryogenic surfaces. Review of Scientific Instruments, 871(87), 24502–24502. Link
  • [79] A. O. Nelson, E. N. Grossman (2014). Advanced designs for non-imaging submillimeter-wave Winston cone concentrators. Proceedings of SPIE, 9102, 91020U. DOI

Invited Talks and Seminars

  • A. O. Nelson (2026). Applied plasma physics: the magnetic pursuit of fusion energy. CIPS Seminar at CU Boulder.
  • A. O. Nelson (2026). Design and Optimization of Tokamaks for Fusion Energy. Energy Frontier Seminars at the Institute of Renewable Energies in Mexico.
  • A. O. Nelson (2025). Using Magnets to Build a Star on Earth. Caltech Astronomy on Tap.
  • A. O. Nelson (2024). The Negative Triangularity Tokmak: Ensuring Robust Access to a High-Performance, ELM-Free Fusion Power Plant. UCI Physics Seminar Series.
  • A. O. Nelson (2024). The Negative Triangularity Tokmak: Ensuring Robust Access to a High-Performance, ELM-Free Fusion Power Plant. Symposium on Plasma And Nuclear Systems (SPANS-2024).
  • A. O. Nelson (2024). The Negative Triangularity Edge. Physics World Webinar: Negative triangularity tokamaks: a power plant plasma solution from the core to the edge?.
  • A. O. Nelson (2024). The Negative Triangularity Tokamak: Power Handling in a Fusion Power Plant. CU Boulder Saturday Physics Series.
  • A. O. Nelson, L. Schmitz, T.B. Cote, C. Paz-Soldan, N. Leuthold, K. E. Thome, M. E. Austin, G. Yu, G. Kramer, S. Stewart (2023). Robust avoidance of peeling-ballooning instabilities through gradient reduction in the negative triangularity edge. 2023 US Transport Task Force Workshop.
  • A. O. Nelson, et al. (2023). Initial Experimental Results from the DIII-D Negative Triangularity Campaign. 2nd International Fusion and Plasma Conference.
  • A. O. Nelson (2023). Robust avoidance of edge localized modes alongside pedestal formation in negative triangularity plasmas. 65th Annual Meeting of the APS Division of Plasma Physics.
  • A. O. Nelson (2023). Plasma Waves. Introduction to Fusion Energy and Plasma Physics Course. Link
  • A. O. Nelson (2023). Negative Triangularity: The Holy Grail for Tokamak Core-Edge Integration?. UCLA Plasma Science and Technology Institute Seminar Series.
  • A. O. Nelson (2022). H-mode Inhibition in Negative Triangularity Tokamak Reactors (Topical Plenary). 6th Asia-Pacific Conference on Plasma Physics.
  • A. O. Nelson (2021). Experimental identification of inter-ELM pedestal MTMs through edge current perturbations. 2021 US Transport Task Force Workshop.
  • A. O. Nelson (2020). A practical introduction to the H-mode pedestal: ELMs and ELM-free regimes. Fusion-EP Seminar Series.
  • A. O. Nelson (2020). Introduction to Outstanding Problems in Magnetic Confinement Fusion. APS-DPP Student Day.
  • A. O. Nelson, R J La Haye, M E Austin, A S Welander, E Kolemen (2019). ECE-based Tearing Mode Suppression and Equilibrium Reconstruction. 24th Workshop on MHD Stability Control.

Co-Author Publications

2026

  • [78] X. Zhang, N. A. Lopez, A. O. Nelson, L. Rondini, F. M. Poli (2026). Application of the Scrape-Off-Layer Fast Ion (SOLFI) code to assess particle motion in mirrors and tokamaks. Fusion Engineering and Design, in review.
  • [77] N. Cao, D. R. Hatch, C. Michoski, T.A. Oliver, D. Eldon, A. O. Nelson, M. Waller (2026). Quantifying Resolution Limits in Pedestal Profile Measurements with Gaussian Process Regression. Nuclear Fusion, 66, 026016.
  • [76] A. M. Wang, Z. Keith, M. D. Boyer, A. O. Nelson, A. Saperstein, A. Pau, C. Rea (2026). Technical Aspects of Plasma Operational Simulation (POPSIM): A Framework for Data-Driven Simulation and Control. IEEE Transactions on Plasma Science, in review.
  • [75] A. Kumar, C. Clauser, F. Carpanese, T. Golfinopoulos, A.O. Nelson, J. Wai, D. Battaglia, D. Boyer, D.T. Garnier, R. Granetz (2026). Axisymmetric n = 0 Growth Rate Modeling in Alcator C-Mod and SPARC: Rigid vs. Non-Rigid Body Approaches. Plasma Phys. Control. Fusion, in press.
  • [74] S Ku, C.S. Chang, R. Hager, L. Schmitz, A.O. Nelson (2026). Difference in Neoclasscial Edge Flows Between Strongly Negative and Positive Triangularities in the XGC Gyrokinetic Simulation. Physics of Plasmas, in press.
  • [73] J. C. Hillesheim, A. J. Creely, T. Eich, N. T. Howard, N. Leuthold, R. Sweeny, A. LeViness, A. O. Nelson, L. Nichols, R. A. Tinguely, M. Usoltseva, D.J. Battaglia, T.A.J. Body, C. Hansen, N. C. Logan, R.T. Mumgaard, P. Rodriguez Fernandez, P.B. Snyder, B.N. Sorbom, J.C. Wright (2026). Overview of the physics basis for the ARC fusion power plant. Journal of Plasma Physics, in review.
  • [72] N. Leuthold, N.C. Logan, D.A. Burgess, A.O. Nelson, S.R. Benjamin, C. Hansen, A. Kumar, C. F. B. Zimmermann, F. Carpanese, A. J. Creely, J. C. Hillesheim, M. Muraca, C Paz-Soldan (2026). ARC Physics Basis - MHD. Journal of Plasma Physics, in review.
  • [71] R. Sweeney et al. (2026). ARC Disruption Physics and Strategy. Journal of Plasma Physics, in review.
  • [70] J. Li, F. Ebrahimi, R. Hager, A. O. Nelson (2026). Core turbulence during nonlinear total-f simulations of DIII-D negative triangularity regime. Physics of Plasmas, in review.
  • [69] T. Slendebroek, A.O. Nelson, O. M. Meneghini, G. Dose, A. G. Ghiozzi, J. Harvey, B. C. Lyons, J. McClenaghan, T. F. Neiser, D. B. Weisberg, M. G. Yoo, E. Bursch, C. Holland (2026). Exploring the fusion power plant design space: comparative analysis of positive and negative triangularity tokamaks through optimization. Nuclear Fusion, 66, 026032. DOI
  • [68] S. Munaretto et al. (2026). Spherical tokamak physics research in preparation for the operation of NSTX-U. Nuclear Fusion, 66, 035001.
  • [67] Steven McNamara, Shereen Abouelazayem, Aleksandra Alieva, Michail Anastopoulos Tzanis, John Berkery, Aleksei Dnestrovskii, Alexandra Dudkovskaia, Filip Janky, Jisung Kang, Nicolas Lopez, Erik Maartensson, R. Maingi, Chris Marsden, Sergei Medvedev, A.O. Nelson, et al. (2026). Physics Basis for the Reference Flat-Top Plasma Scenario in the ST-E1 Fusion Power Plant. Nuclear Fusion, in review.
  • [66] J Willis, S A M McNamara, E N J Maartensson, J Astbury, E Yildirim, N Hinton, C L Wilson, X Zhang, J W Berkery, L Baylor, M Shimada, H Flynn, A O Nelson, et al. (2026). Tokamak Energy’s Pre-Concept Design for a Fusion Power Plant: An Overview of ST-E. Nuclear Fusion, in review.
  • [65] A. Marinoni, C. Chrystal, S. Coda, R. Coosemans, C. Marini, M. Podesta, O. Sauter, M. Agostini, M. E. Austin, J. Barr, E. Belli, J. Candy, M. Gorelenkova, D. Hamm, A. W. Hyatt, M. Knolker, M. La Matina, P. Lunia, S. Mordijck, A. O. Nelson, et al. (2026). Non-dimensional confinement scaling in similar negative triangularity plasmas on the DIII-D and TCV tokamaks. Proceedings of the 29th IAEA Fusion Energy Conference, in press.
  • [64] B. Vanovac, J. Hobirk, A. O. Nelson, O. Sauter, M. Dunne, M. Faitsch, T. Puetterich, F. Rainer, D. Stieglitz, E. Strumberger, L. Xianzi, O. Grover, A. Kappatou, P. David, G. Tardini, P. Mantica, A. White (2026). ELM suppression and confinement in negative triangularity with stronger shaping in ASDEX Upgrade. Nuclear Fusion, in review.

2025

  • [63] S. Stewart, G. McKee, C. Chrystal, T. Cote, B. Geiger, F. Khabanov, A. O. Nelson, X. Qin, C. Paz-Soldan, L. Schmitz, K. E. Thome, Z. Yan (2025). Characterization of Turbulence Properties in Negative Triangularity DIII-D Plasmas. Plasma Physics and Controlled Fusion, 67, 025032. Link
  • [62] Azarakhsh Jalalvand, Max Curie, SangKyeun Kim, Jaemin Seo, Peter Steiner, Qiming Hu, Andrew Oakleigh Nelson, Egemen Kolemen, M. Curie, Y.-S Na (2025). Multimodal Super-Resolution: Discovering hidden physics and its application to fusion plasmas. Nature Communications, 16, 8506. Link
  • [61] T. Bechtel Amara, S. P. Smith, Z. A. Xing, T. F. Neiser, C. Simpson, A. O. Nelson, et al. (2025). Accelerating Discoveries at DIII-D With the Integrated Research Infrastructure. Frontiers of Physics, 12, 1524041. DOI
  • [60] D Eldon, L Casali, I Bykov, C Chrystal, K Erickson, A W Hyatt, A W Leonard, A L Moser, A O Nelson, T Odstrčil, C Paz-Soldan, T Pederson, F Scotti, H Shen, K E Thome, H Q Wang, A Welsh, T M Wilks (2025). Characterization and controllability of radiated power via extrinsic impurity seeding in strongly negative triangularity plasmas in DIII-D. Plasma Physics and Controlled Fusion, 67(1), 015018. DOI
  • [59] Sophia Guizzo, Mikhail A. Drabinskiy, Christopher Hansen, Aleksandr G. Kachkin, Eduard N. Khairutdinov, Andrew O. Nelson, Maxim R. Nurgaliev, Matthew Pharr, Georgy F. Subbotin, Carlos Paz-Soldan (2025). Electromagnetic System Conceptual Design for a Negative Triangularity Tokamak. Fusion Engineering and Design, 219, 115257. Link
  • [58] R Perillo, J A Boedo, C J Lasnier, A McLean, C Marini, I Bykov, F Glass, A Kapat, A O Nelson, D L Rudakov (2025). First-wall fluxes from large and small ELMs. Physics of Plasmas, 32, 022501. Link
  • [57] J F Parisi, J W Berkery, A. Sladkomedova, S. Guizzo, M. R. Hardman, J. R. Ball, A. O. Nelson, S. M. Kaye, M. Anastopoulos-Tzanis, S McNamara, J. Dominski, S. Janhunen, M. Romanelli, D. Dickinson, A. Diallo, A. Dnestrovskii, W. Guttenfelder, C. Hansen, O. Myatra, H. R. Wilson (2025). Doubling fusion power with volumetric optimization in magnetic confinement fusion devices. Physical Review Research, 7, 013139. Link
  • [56] L Casali, D Eldon, T Odstrcil, R Mattes, A Welsh, K Lee, A O Nelson, C Paz-Soldan, F Khabanov, T Cote, A G McLean, F Scotti, K E Thome (2025). Achievement of highly radiating plasma in negative triangularity and effect of reactor-relevant seeded impurities on confinement and transport. Plasma Physics and Controlled Fusion, 67(2), 025007. DOI
  • [55] R. Shousha, S.K. Kim, K. Erickson, S. H. Hahn, A. O. Nelson, et al. (2025). Unified ELM Suppression on KSTAR and DIII-D via Adaptive Feedback Control Strategies. Nuclear Fusion, 65, 086021. Link
  • [54] T Cote, G Yu, A O Nelson, N Leuthold, N Richner, S Stewart, F Khabanov, Y Zhu, F Ebrahimi, J King, C Paz-Soldan, L Schmitz, K E Thome, M E Austin, F Scotti (2025). First observations of edge instabilities in strongly shaped negative triangularity plasmas on DIII-D. Plasma Physics and Controlled Fusion, 67(3), 035033. DOI
  • [53] M E Fenstermacher, L R Baylor (2025). Progress in pedestal and edge physics Chapter 3 of the special issue: on the path to tokamak burning plasma operation. Nucl. Fusion, 65, 053001.
  • [52] G. Kramer, A. O. Nelson, K.E. Thome (2025). On the formation of edge electric fields in negative triangularity plasmas. Plasma Phys. Control. Fusion, 67, 105010.
  • [51] L. Casali, D. Eldon, T. Odstrcil, A. Welsh, K. Lee, A. O. Nelson, C Paz-Soldan, M. G. Burke, T. Cote, F. Khabanov, C. Lasnier, A. McLean, F. Scotti, K. E. Thome, D. Truong (2025). Progress towards Integrated Tokamak Scenarios for Exhaust: experiments and new self-consistent core-edge modeling framework. 2025 IAEA 5th TM on Divertor Concepts.
  • [50] Filippo Scotti et al. (2025). Divertor characterization and access to dissipative divertor conditions in Negative Triangularity discharges in DIII-D. Plasma Physics and Controlled Fusion, 67, 095030. DOI
  • [49] Anirban Samaddar, Qian Gong, Sandeep Madireddy, Christopher J Hansen, Semin Joung, David R Smith, Yixuan Sun, Fatima Ebrahimi, Prasanna Balaprakash, Andrew Oakleigh Nelson (2025). Spatiotemporal Forcasting of the Edge Localized Modes in Tokamak Plasmas Using Neural Networks. Machine Learning: Science and Technology, 6, 035041. DOI
  • [48] R. Shousha, C. Hansen, A. Maan, A. O. Nelson, D. P. Boyle, S. Banerjee, R. Majeski (2025). Systematic analysis of magnetic equilibrium reconstruction with eddy currents on LTX-β. Nuclear Fusion, 65, 116009. Link
  • [47] A Rothstein, V Ailiani, K Krogen, A O Nelson, X Sun, M S Kim, W Boyes, N C Logan, Z A Xing, E Kolemen, the DIII-D Team (2025). Assessing the numerical stability of physics models to equilibrium variation through database comparisons on DIII-D. Plasma Physics and Controlled Fusion, 67(11), 115006. DOI
  • [46] A Lvovskiy, H Anand, A S Welander, M Kochan, C Vincent, G McArdle, J Lovell, Z A Xing, J L Barr, E Cho, B Sammuli, D A Humphreys, N W Eidietis, V Soukhanovskii, A W Leonard, A O Nelson, A Thornton, J Harrison (2025). Framework for assessment of magnetic equilibrium controller performance on the MAST upgrade spherical tokamak. Plasma Physics and Controlled Fusion, 67(7), 075003. DOI

2024

  • [45] Craig Michoski, Todd A Oliver, David R Hatch, Ahmed Diallo, Mike Kotschenreuther, David Eldona, Matthew Wallerb, Richard Groebnera, A. O. Nelson (2024). A Gaussian Process Guide for Signal Regression in Magnetic Fusion. Nuclear Fusion, 64, 035001. Link
  • [44] C. Hansen, I G Stewart, D. Burgess, M. Pharr, S. Guizzo, F. Logak, A. O. Nelson, C. Paz-Soldan (2024). TokaMaker: An open-source time-dependent Grad-Shafranov tool for the design and modeling of axisymmetric fusion devices. Computer Physics Communications, 298, 109111. Link
  • [43] S. Guizzo, A. O. Nelson, C. Hansen, F. Logak, C. Paz-Soldan (2024). Assessment of vertical stability for negative triangularity pilot plants. Plasma Physics and Controlled Fusion, 66, 065018. Link
  • [42] J F Parisi, A O Nelson, R Gaur, S M Kaye, F I Parra, J W Berkery, K Barada, C Clauser, A J Creely, A Diallo, W Guttenfelder, J W Hughes, L A Kogan, A Kleiner, A Q Kuang, M Lampert, T Macwan, J E Menard, M A Miller (2024). Kinetic-ballooning-bifurcation in tokamak pedestals across shaping and aspect-ratio. Physics of Plasmas, 31, 030702. Link
  • [41] J.F. Parisi, W. Guttenfelder, A.O. Nelson, R. Gaur, A. Kleiner, M. Lampert, G. Avdeeva, J.W. Berkery, C. Clauser, M. Curie, A. Diallo, W. Dorland, S.M. Kaye, J. McClenaghan, F.I. Parra (2024). Kinetic-ballooning-limited pedestals in spherical tokamak plasmas. Nuclear Fusion, 64(5), 054002. DOI
  • [40] S. K. Kim, R. Shousha, S. M. Yang, Q. Hu, S. H. Hahn, A. Jalalvand, J.-K. Park, N. C. Logan, A. O. Nelson, et al. (2024). Highest fusion performance without harmful edge energy bursts in tokamak. Nature Communications, 15(1), 3990. DOI
  • [39] J.F. Parisi, A.O. Nelson, W. Guttenfelder, R. Gaur, J.W. Berkery, S.M. Kaye, K. Barada, C. Clauser, A. Diallo, D.R. Hatch, A. Kleiner, M. Lampert, T. Macwan, J.E. Menard (2024). Stability and transport of gyrokinetic critical pedestals. Nuclear Fusion, 64(8), 086034. DOI
  • [38] F. Scotti, A. Marinoni, A.G. McLean, C. Paz-Soldan, K.E. Thome, M. Zhao, S. Allen, M. Austin, M.G. Burke, D. Eldon, M. Fenstermacher, A. Hyatt, C.J. Lasnier, A. Leonard, J. Lore, A.O. Nelson, et al. (2024). High performance power handling in the absence of an H-mode edge in negative triangularity DIII-D plasmas. Nuclear Fusion, 64(9), 094001. DOI
  • [37] C. Paz-Soldan, C. Chrystal, P. Lunia, A.O. Nelson, K.E. Thome, M.E. Austin, T.B. Cote, A.W. Hyatt, N. Leuthold, A. Marinoni, T.H. Osborne, M. Pharr, O. Sauter, F. Scotti, T.M. Wilks, H.S. Wilson (2024). Simultaneous access to high normalized density, current, pressure, and confinement in strongly-shaped diverted negative triangularity plasmas. Nuclear Fusion, 64(9), 094002. DOI
  • [36] Colin Chrystal, Max E Austin, Tomas Odstrcil, Carlos Paz-Soldan, Kathreen E Thome, Alessandro Marinoni, William Samuel Boyes, Thomas H Osborne, Nikolas Logan, A W Hyatt, Andrew Oakleigh Nelson (2024). Effect of rotation on negative triangularity plasmas in DIII-D. Plasma Physics and Controlled Fusion, 66, 105004. DOI
  • [35] Kathreen E Thome et al. (2024). Overview of results from the 2023 DIII-D Negative Triangularity campaign. Plasma Physics and Controlled Fusion, 66, 105018. DOI
  • [34] The MANTA Collaboration et al. (2024). MANTA: a negative-triangularity NASEM-compliant fusion pilot plant. Plasma Physics and Controlled Fusion, 66(10), 105006. DOI
  • [33] M A Miller, D Arnold, M Wigram, A O Nelson, J Witham, G Rutherford, H Choudhury, C Cummings, C Paz-Soldan, D G Whyte (2024). Power handling in a highly-radiative negative triangularity pilot plant. Plasma Physics and Controlled Fusion, 66(12), 125004. DOI
  • [32] W. Boyes, F. Turco, J. Hanson, G.A. Navratil, A. Turnbull, A. Hyatt, T. Luce, W. Meyer, A.O. Nelson, T. Odstrcil, T. Osborne, F. Scotti, A. Welander, A. Wingen (2024). Novel intrinsic helical cores and MHD dynamo flux pumping evidence in DIII-D. Nuclear Fusion, 64(12), 124005. DOI
  • [31] J McClenaghan, A Marinoni, A O Nelson, T Neiser, L L Lao, G M Staebler, S P Smith, O M Meneghini, B C Lyons, P B Snyder, M Austin (2024). Examining transport and integrated modeling predictive capabilities for negative-triangularity scenarios. Plasma Physics and Controlled Fusion, 66(11), 115008. DOI
  • [30] J. Yang, A.C.C. Sips, P. De Vries, J. Sinha, H.T. Kim, F. Glass, M. Austin, M. Van Zeeland, J.L. Herfindal, M. Shafer, A.O. Nelson, C. Marini, M.G. Yoo (2024). Toroidal injection angle dependence of EC assisted plasma initiation at DIII-D. Nuclear Fusion, 64(12), 126065. DOI
  • [29] Haley S Wilson, Andrew Oakleigh Nelson, Joseph McClenaghan, Pablo Rodriguez-Fernandez, Jason F Parisi, Carlos Paz-Soldan (2024). Characterizing the negative triangularity reactor core operating space with integrated modeling. Plasma Physics and Controlled Fusion, 67, 015026. DOI
  • [28] J.R. Harrison et al. (2024). Overview of physics results from MAST upgrade towards core-pedestal-exhaust integration. Nuclear Fusion, 64(11), 112017. DOI
  • [27] C.T. Holcomb et al. (2024). DIII-D research to provide solutions for ITER and fusion energy. Nuclear Fusion, 64(11), 112003. DOI

2023

  • [26] R. Singh, P. Diamond, A. O. Nelson (2023). Geometric dependencies of the mean E × B shearing rate in negative triangularity tokamaks. Nuclear Fusion, 63, 126053. Link
  • [25] G. Yu, Z. Li, G. Kramer, F. Scotti, A. O. Nelson, A. Diallo, C. Lasnier, M. E. Austin, X. Qin, Y. Chen, Y. Zheng, Y. Zhu, N. C. Luhmann (2023). Understanding the negative triangularity ELM trigger and ELM free state on DIII-D with ECE-imaging. Physics of Plasmas, 30, 062505. DOI

2022

  • [24] M. Curie, J. L. Larakers, D. Hatch, A. O. Nelson, A. Diallo, E. Hassan, W. Guttenfelder, M. Halfmoon, M. Kotschenreuther, R. D. Hazeltine, S. M. Mahajan, R. J. Groebner, J. Chen, C. Perez von Thun, L. Frassinetti, S. Saarelma, C. Giroud, M. Tennery (2022). A survey of pedestal magnetic fluctuations using gyrokinetics and a global reduced model for microtearing stability. Physics of Plasmas, 29, 042503. Link
  • [23] A. Jalalvand, A. A. Kappatou, A. V. Garcia, A. O. Nelson, J. Abbate, M. Austin, G. Verdoolaege, S. L. Brunton, W. W. Heidbrink, E. Kolemen (2022). Alfvén eigenmode classification based on ECE diagnostics at DIII-D using deep recurrent neural networks. Nuclear Fusion, 62, 026007. Link
  • [22] S. K. Kim, R. Shousha, S. H. Hahn, A. O. Nelson, J. Wai, S. M. Yang, J. K. Park, R. Nazikian, Y. M. Jeon, Y. In, J. H. Lee, J. Kim, Y.-S. Na, E. Kolemen (2022). Optimization of 3D controlled ELM-free state with recovered global confinement for tokamak fusion plasmas. Nuclear Fusion, 62, 026043. Link
  • [21] R. Shousha, S. K. Kim, K. G. Erickson, S. H. Hahn, A. O. Nelson, S M Yang, J.-K. Park, J. Wai, Y. M. Jeon, J. H. Lee, J. Jang, D. C. Seo, E. Kolemen (2022). Design and experimental demonstration of Feedback Adaptive RMP ELM Controller towards complete long pulse ELM suppression on KSTAR. Physics of Plasmas, 29, 032514. Link
  • [20] Ehab Hassan, D. R. Hatch, M. R. Halfmoon, M. Curie, M. T. Kotschenreuther, S. M. Mahajan, G. Merlo, R. J. Groebner, A. O. Nelson, A. Diallo (2022). Identifying Microtearing Modes in the pedestal of DIII-D H-modes in Gyrokinetic Simulations. Nuclear Fusion, 62, 026008. Link
  • [19] J. A. Schwartz, A. O. Nelson, E. Kolemen (2022). To dee or not to dee: costs and benefits of altering the triangularity of a steady-state DEMO-like reactor. Nuclear Fusion, 62, 076006. Link
  • [18] M. E. Fenstermacher et al. (2022). DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy. Nuclear Fusion, 62(4), 042024. DOI
  • [17] Samuel Frank, Conor J Perks, Andrew Oakleigh Nelson, Tony Qian, Suying Jin, Amelia J Cavallaro, Adam Rutkowski, Allan H Reiman, Jeffrey P Freidberg, Pablo Rodriguez-Fernandez, Dennis G Whyte (2022). Radiative pulsed L-mode operation in ARC-class reactors. Nuclear Fusion, 62, 126036. DOI
  • [16] M R Halfmoon, D R Hatch, M T Kotschenreuther, S. M. Mahajan, A. O. Nelson, E. Kolemen, M. Curie, A. Diallo, R. J. Groebner, E. Hassan, E. A. Belli, J. Candy (2022). Gyrokinetic analysis of inter-edge localized mode transport mechanisms in a DIII-D pedestal. Physics of Plasmas, 29, 112505. Link
  • [15] T. A. Bechtel, A. O. Nelson, L. L. Lao, Z. A. Xing, S. P. Smith, R. Nazikian, S. Flanagan, D. Schissel, L. Stephey, R. Thomas, S. Williams, O. Antepara, E. Dart, E. Koleman, W. Tang (2022). Accelerated Workflow for Advanced Kinetic Equilibria. 2022 First Combined International Workshop on Interactive Urgent Supercomputing (CIW-IUS), 1–5. DOI
  • [14] A. O. Nelson, S. Freiberger, H S Wilson, L. Rondini, C. Paz-Soldan (2022). Initial Simulations of Negative Triangularity Plasmas on MAST-U. 21st International Spherical Torus Workshop.

2021

  • [13] E. J. Strait, S. Munaretto, R. M. Sweeney, N. C. Logan, A. O. Nelson (2021). Electromagnetic torque measurements in DIII-D using internal/external magnetic field decomposition. Review of Scientific Instruments, 92, 043516. DOI
  • [12] Z.A. Xing, D. Eldon, A. O. Nelson, M. A. Roelofs, W. J. Eggert, O. Izacard, A.S. Glasser, N.C. Logan, O. Meneghini, S. P. Smith, R. Nazikian, E. Kolemen (2021). CAKE: Consistent Automatic Kinetic Equilibrium reconstruction. Fusion Engineering and Design, 163, 112163. DOI
  • [11] S. K. Kim, R. Shousha, S. H. Hahn, A. O. Nelson, J. Wai, S. M. Yang, J. K. Park, Y. In, J. H. Lee, J. Kim, E. Kolemen (2021). Effect of n=1 RMP-driven Turbulence on Ion Pedestal and its role in Adaptive ELM control in KSTAR. Proceedings of 47th EPS Conference on Plasma Physics, P4, 1067. Link
  • [10] Viraj Mehta, Ian Char, Willie Neiswanger, Youngseog Chung, A. O. Nelson, Mark D Boyer, Egemen Kolemen, Jeff Schneider (2021). Neural Dynamical Systems: Balancing Structure and Flexibility in Physical Prediction. 2021 60th IEEE Conference on Decision and Control (CDC), 3735–3742. Link

2020

  • [9] F. M. Laggner, David Eldon, A. O. Nelson, Carlos Paz-Soldan, Alessandro Bortolon, Todd E Evans, Max E Fenstermacher, Brian A Grierson, Qiming Hu, Dave A Humphreys, A W Hyatt, Raffi Nazikian, O Meneghini, Philip B Snyder, Ezekial A Unterberg, Egemen Kolemen (2020). Real-time pedestal optimization and ELM control with 3D fields and gas flows on DIII-D. Nuclear Fusion, 60, 076004. DOI
  • [8] J. T. Wai, P. J. Vail, A. O. Nelson, Z. A. Xing, C. Lasnier, E. Kolemen (2020). Infrared Constrained Equilibria and Application to Snowflake Divertor Studies. Nuclear Materials and Energy, 25, 100835. DOI
  • [7] Youngseog Chung, Ian Char, Willie Neiswanger, Kirthevasan Kandasamy, A. O. Nelson, Mark D Boyer, Egemen Kolemen, Jeff Schneider (2020). Offline Contextual Bayesian Optimization for Nuclear Fusion. Machine Learning and the Physical Sciences Workshop at the 33rd Conference on Neural Information Processing Systems (NeurIPS), 1–12. Link
  • [6] R. Fitzpatrick, A. O. Nelson (2020). An improved theory of the response of DIII-D H-mode discharges to static resonant magnetic perturbations and its implications for the suppression of edge localized modes. Physics of Plasmas, 27, 072501. DOI

2019

  • [5] Y. Yang, L. Buzi, A. O. Nelson, R. Kaita, B. E. Koel (2019). Post exposure time dependence of deuterium retention in lithium and lithium compounds. Nuclear Materials and Energy, 19, 161–165. DOI
  • [4] L. Buzi, A. O. Nelson, Y. Yang, R. Kaita, P. S. Krstić, B. E. Koel (2019). Sputtering of lithium and lithium compound films under deuterium and helium ion bombardment. Nuclear Materials and Energy, 19, 411–415. DOI
  • [3] Ian Char, Youngseog Chung, Willie Neiswanger, Kirthevasan Kandasamy, A. O. Nelson, Mark D Boyer, Egemen Kolemen (2019). Offline Contextual Bayesian Optimization. Advances in Neural Information Processing Systems 32, 4629–4640. Link

2018

  • [2] L. Buzi, Y. Yang, F. J. Domínguez-Gutiérrez, A. O. Nelson, M. Hofman, P. S. Krstić, R. Kaita, B. E. Koel (2018). Hydrogen retention in lithium and lithium oxide films. Journal of Nuclear Materials, 502, 161–168. DOI

2014

  • [1] E. N. Grossman, O. D. Friedman, A. O. Nelson (2014). Non-Imaging Winston Cone Concentrators for Submillimeter-Wave, Overmoded Waveguide. IEEE Transactions on Terahertz Science and Technology, 4(1), 65–74. DOI