THEORY DEPARTMENT
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Research Seminars
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Highlights
Invited Talks
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In the Media
Highlights
The following describe research highlights of the Theory Department.
Past
Permanent Magnets Can be Used to Simplify Stellarators
Per Helander,
slides
[#s1162, 07 Aug 2020]
Balancing the Macroscopic Pressure and Magnetic Force in Stellarators
Stuart Hudson, Sophia Henneberg, Per Helander,
slides
[#s1161, 04 Aug 2020]
Explosive Disruptions of the Magnetosphere Lead to Substorms
Sam Totorica, Amitava Bhattacharjee,
slides
[#s1152, 02 Aug 2020]
Dancing Magnetic Field Lines in Simulations of the Edge of Fusion Devices
Greg Hammett,
slides
[#s1160, 02 Aug 2020]
Efficient Simulations of Energetic Ion Relaxation in Burning Plasmas
Nikolai Gorelenkov,
slides
[#s1166, 02 Aug 2020]
A Revolutionary Model of the Dynamic Magnetic Field that Surrounds Mercury
Chuanfei Dong, Amitava Bhattacharjee,
slides
[#s1144, 31 Jul 2020]
Fixing Ray Optics for Wave Simulations
Nicolas Lopez, Ilya Dodin,
slides
[#s1153, 31 Jul 2020]
Unraveling the Physical Mechanism of Explosive Events in the Sun
Yi-Min Huang,
slides
[#s1156, 31 Jul 2020]
Understanding Turbulence in Earth’s Atmosphere Helps Unlock Mechanisms of Magnetic Field Generation Inside the Sun
Valentin Skoutnev,
slides
[#s1159, 31 Jul 2020]
Stabilizing Fusion Plasmas with Radio Frequency Waves
Allan Reiman, Nat Fisch,
slides
[#s1163, 31 Jul 2020]
Moving fusion research into the big-and-fast data lane
Ralph Kube, Michael Churchill and C.S. Chang,
slides
[#s1141, 29 Jul 2020]
Understanding Plasma Rotation When Turbulence and Magnetic Ripples are at Odds
Timothy Stoltzfus-Dueck,
slides
[#s1142, 29 Jul 2020]
Nonlinear Wave Interactions Lead to Damaging Bursts of Energy at the Edge of Tokamaks
Julien Dominski, Ahmed Diallo,
slides
[#s1134, 01 Apr 2020]
Electrical Current Generation by Turbulence Can Affect Plasma Confinement in Future Fusion Reactors
Weixing Wang,
slides
[#s1133, 31 Mar 2020]
The Primary, Secondary, and Tertiary Instabilities Determine the Onset of Turbulence in Fusion Plasmas
Hongxuan Zhu, Yao Zhou, Ilya Dodin,
slides
[#s1132, 18 Mar 2020]
XGC-M3Dc1 coupled extreme-scale simulations explain RMP-driven edge transport in realistic DIII-D edge plasma
Robert Hager, C.S. Chang, Nate Ferraro and Raffi Nazikian,
slides
[#s1143, 01 Jan 2020]
Physics-Constrained Neural Networks for Expensive Fokker-Planck Solvers - A SciDAC FASTMath and HBPS Success!
Andreas Miller, Michael Churchill and C.S. Chang (PPPL); Alp Dener, Todd Munson (ANL),
slides
[#s1154, 01 Jan 2020]
Established capability for near-real time networked analysis of big KSTAR data at NERSC
Michael Churchill, Ralph Kube and C.S. Chang ,
slides
[#s1155, 01 Jan 2020]
Improved Equation-Free Method that Maximizes the Preservation of Microscale Properties
Benjamin Sturdevant, C.S. Chang and Robert Hager (PPPL); Scott Parker (U. Colorado, Boulder),
slides
[#s1157, 01 Jan 2020]
A New Particle Resampling Algorithm by ASCR Scientists is Enabling ITER-Critical Turbulence Simulations in Stochastic Magnetic Fields
CS Chang and Robert Hager (PPPL); Varis Carey (U. Colorado, Denver),
slides
[#s1158, 01 Jan 2020]
New Model Sheds Light on Key Physics of Magnetic Islands that Can Halt Fusion Reactions
C-S. Chang,
slides
[#s793, 12 Jul 2018]
Advanced Simulations Capture the Dynamics of Solar Flares, Northern Lights and Space Storms
Ammar Hakim,
slides
[#s790, 09 Jul 2018]
Auroras on the Moon? Which Moon?
Liang Wang,
slides
[#s736, 28 May 2018]
Higher Plasma Densities, More Efficient Tokamaks
Qian Teng,
slides
[#s733, 21 May 2018]
Fractals, Plasma Physics and Fusion
Brian Kraus,
slides
[#s662, 20 Mar 2018]
Nonlinear simulations of magnetically confined plasmas reveal a self-regulating stabilizing mechanism
Isabel Krebs,
slides
[#s625, 09 Feb 2018]
Magnetized plasmas that “twist light” can produce high-power microscopes, and more.
Kenan Qu,
slides
[#s558, 11 Dec 2017]
Predicting Magnetic Explosions: From Plasma Current Sheet Disruption to Fast Magnetic Reconnection
Yi-Min Huang,
slides
[#s532, 06 Nov 2017]
Are “Habitable” Exoplanets Really Habitable?
Chuanfei Dong,
slides
[#s501, 10 Oct 2017]
Zero tolerance in tokamaks: eliminating small instabilities before they become disruptions
Dylan Brennan,
slides
[#s500, 09 Oct 2017]
Spinning on its own: selecting the direction of intrinsic rotation
Timothy Stoltzfus-Dueck,
slides
[#s441, 14 Aug 2017]
A billion trillion “clashes” make a plasma: averaging over the micro to understand the macro
David Pfefferlé,
slides
[#s307, 10 Aug 2017]
Bringing Cosmic Shock Waves Down to Earth
Derek Schaeffer,
slides
[#s430, 01 Jul 2017]
Zonostrophic Instability and the Onset of the Dimits Shift
John Krommes,
slides
[#s308, 01 May 2017]
First high-fidelity computational demonstration of spontaneous transition to high-confinement plasma required by ITER
C-S. Chang,
slides
[#s309, 01 Apr 2017]
Understanding and avoiding disruptions that halt fusion reactions
Nate Ferraro,
slides
[#s310, 01 Mar 2017]
Magnetorotational Turbulence and Dynamo in a Collisionless Plasma
Matthew Kunz,
slides
[#s311, 01 Feb 2017]
Theory for high-intensity charged particle beams in strongly coupled focusing lattice
Hong Qin,
slides
[#s312, 01 Jan 2017]
General Theory of the Plasmoid Instability
Luca Comisso,
slides
[#s313, 01 Dec 2016]
Plasmoids formation in a laboratory and large-volume flux closure during simulations of Coaxial
Fatima Ebrahimi,
slides
[#s314, 01 Nov 2016]
Extending geometrical optics: A Lagrangian theory for vector waves
Daniel Ruiz,
slides
[#s315, 01 Oct 2016]
Understanding and Predicting Intrinsic Rotation in Fusion Plasmas
Weixing Wang,
slides
[#s316, 01 Sep 2016]
3D Full Wave Simulation of Reflectometry in Toroidal Plasma
Ernest Valeo,
slides
[#s317, 01 Sep 2016]
Diagnostic Applications of Neutral Transport
Daren Stotler,
slides
[#s318, 01 Aug 2016]
A new hybrid-Lagrangian gyrokinetic scheme for tokamak edge plasmas
Seung-Hoe Ku,
slides
[#s319, 01 Jul 2016]
An accurate and scalable nonlinear multi-species Fokker-Planck operator solver
Robert Hager,
slides
[#s320, 01 Jun 2016]
Priority topics in energetic ion physics research
Nikolai Gorelenkov,
slides
[#s321, 01 May 2016]
Controlling plasma properties: electron induced secondary electron emission
Igor Kaganovich,
slides
[#s338, 13 Apr 2016]
Hamiltonian gyrokinetic Vlasov-Maxwell system
Josh Burby,
slides
[#s322, 01 Apr 2016]
Variational methods for modeling linear and nonlinear waves in fusion plasmas: fundamental physics and applications
Ilya Dodin,
slides
[#s323, 01 Mar 2016]
Sheath-induced instabilities in magnetized plasmas
Igor Kaganovich,
slides
[#s337, 17 Feb 2016]
Astrophysical Weibel instability in counter-streaming laser-driven plasmas
Will Fox,
slides
[#s324, 01 Feb 2016]
Accurate calculation of Singular Current Densities in non-linear, ideal MHD equilibrium solutions
Stuart Hudson,
slides
[#s325, 01 Jan 2016]
Complex Electron Energy Distribution in Asymmetric RF-DC Discharge
Igor Kaganovich,
slides
[#s336, 15 Dec 2015]
Strong Dependence of Intrinsic Rotation on X-Point Position
Timothy Stoltzfus-Dueck,
slides
[#s326, 01 Dec 2015]
Coupling of Neutral-beam-driven Compressional Alfvén Eigenmodes to Kinetic Alfvén Waves in NSTX and Energy Channelling
Elena Belova,
slides
[#s327, 01 Nov 2015]
Two-stream instability of an electron beam propagating in a bounded plasma
Igor Kaganovich,
slides
[#s335, 14 Oct 2015]
Self-organized Stationary States of Tokamaks
Steve Jardin,
slides
[#s328, 01 Oct 2015]
Benchmarking and Validation Initiative for Three-Dimensional Equilibrium Calculations
Allan Reiman,
slides
[#s329, 01 Sep 2015]
Riding an electron wave into the future of microchip
Igor Kaganovich,
slides
[#s334, 15 Aug 2015]
Tokamak MHD (TMHD) model for disruption studies
Leonid Zakharov,
slides
[#s330, 01 Aug 2015]
Critical Gradient Model for Fast Ion Profile Relaxation in Tokamaks
Nikolai Gorelenkov,
slides
[#s331, 01 Jul 2015]
Helping General Electric Upgrade the U.S. Power Grid
Igor Kaganovich,
slides
[#s333, 15 Jun 2015]
Turbulence-driven “anomalous bootstrap current" generation
Weixing Wang,
slides
[#s332, 01 Jun 2015]