All Stories

  1. Electromagnetic system conceptual design for a negative triangularity tokamak

    Article • Fusion Engineering and Design, October 2025, Elsevier

    Chris Hansen

  2. ThinCurr: An open-source 3D thin-wall eddy current modeling code for the analysis of large-scale systems of conducting structures

    Article • Computer Physics Communications, October 2025, Elsevier

    Chris Hansen

  3. Extending the trapping theorem to provide local stability guarantees for quadratically nonlinear models

    Article • Physics of Fluids, October 2025, American Institute of Physics

    Chris Hansen

  4. Systematic analysis of magnetic equilibrium reconstruction with eddy currents on LTX-β

    Article • Nuclear Fusion, September 2025, Institute of Physics Publishing

    Chris Hansen

  5. SPATIOTEMPORAL FORECASTING OF THE EDGE LOCALIZED MODES IN TOKAMAK PLASMAS USING NEURAL NETWORKS

    Article • Machine Learning Science and Technology, August 2025, Institute of Physics Publishing

    Chris Hansen

  6. Computation of generalised magnetic coordinates asymptotically close to the separatrix

    Article • Plasma Physics and Controlled Fusion, June 2025, Institute of Physics Publishing

    Chris Hansen

  7. Improved liquid lithium surfaces in the Lithium Tokamak Experiment-β

    Article • Nuclear Materials and Energy, June 2025, Elsevier

    Chris Hansen

  8. Counterintuitive Particle Confinement in a Helical Force-Free Plasma

    Article • Plasma, May 2025, MDPI AG

    Chris Hansen

  9. Disruption mitigation modeling for the SPARC tokamak

    Article • Physics of Plasmas, April 2025, American Institute of Physics

    Valerie Izzo, Chris Hansen

  10. Doubling fusion power with volumetric optimization in magnetic confinement fusion devices

    Article • Physical Review Research, February 2025, American Physical Society (APS)

    Chris Hansen

  11. Simulations of saturated MHD activity in the HBT-EP tokamak

    Article • Physics of Plasmas, February 2025, American Institute of Physics

    Chris Hansen

  12. Error field predictability and consequences for ITER

    Article • Nuclear Fusion, September 2024, Institute of Physics Publishing

    Chris Hansen

  13. MANTA: a negative-triangularity NASEM-compliant fusion pilot plant

    Article • Plasma Physics and Controlled Fusion, August 2024, Institute of Physics Publishing

    Chris Hansen

  14. Low latency optical-based mode tracking with machine learning deployed on FPGAs on a tokamak

    Article • Review of Scientific Instruments, July 2024, American Institute of Physics

    Chris Hansen

  15. TokaMaker: An open-source time-dependent Grad-Shafranov tool for the design and modeling of axisymmetric fusion devices

    Article • Computer Physics Communications, May 2024, Elsevier

    Chris Hansen

  16. Assessment of vertical stability for negative triangularity pilot plants

    Article • Plasma Physics and Controlled Fusion, April 2024, Institute of Physics Publishing

    Chris Hansen

  17. Boundary condition effects on Runaway Electron Mitigation Coil modeling for the SPARC and DIII-D tokamaks

    Article • Nuclear Fusion, April 2024, Institute of Physics Publishing

    Chris Hansen

  18. Investigating the role of edge neutrals in exciting tearing mode activity and achieving flat temperature profiles in LTX-β

    Article • Nuclear Fusion, February 2024, Institute of Physics Publishing

    Chris Hansen

  19. Design of passive and structural conductors for tokamaks using thin-wall eddy current modeling

    Article • Nuclear Fusion, November 2023, Institute of Physics Publishing

    Chris Hansen

  20. A optical diagnostic system to measure the electron temperature in a tokamak device.

    Article • Review of Scientific Instruments, October 2023, American Institute of Physics

    Boting Li, Chris Hansen

  21. Optimization of the equilibrium magnetic sensor set for the SPARC tokamak

    Article • Nuclear Fusion, September 2023, Institute of Physics Publishing

    Chris Hansen

  22. An optical-input Maximum Likelihood Estimation feedback system demonstrated on tokamak horizontal equilibrium control

    Article • Fusion Engineering and Design, June 2023, Elsevier

    Chris Hansen

  23. Improved neutral and plasma density control with increasing lithium wall coatings in the Lithium Tokamak Experiment-β (L...

    Article • Nuclear Materials and Energy, June 2023, Elsevier

    Chris Hansen

  24. MHD mode tracking using high-speed cameras and deep learning

    Article • Plasma Physics and Controlled Fusion, May 2023, Institute of Physics Publishing

    Chris Hansen

  25. Extending the low-recycling, flat temperature profile regime in the lithium tokamak experiment-β (LTX-β) with ohmic and neutral beam heating

    Article • Nuclear Fusion, April 2023, Institute of Physics Publishing

    Chris Hansen

  26. Sparse regression for plasma physics

    Article • Physics of Plasmas, March 2023, American Institute of Physics

    Chris Hansen

  27. Feasibility study of a high spatial and time resolution beam emission spectroscopy diagnostic for localized density fluctuation measurements in Lithium Tokamak eXperiment-β (LTX-β)

    Article • Review of Scientific Instruments, November 2022, American Institute of Physics

    Chris Hansen

  28. A multi-chord, two-color interferometer using Hilbert transform phase detection for measuring electron density in spheromak plasmas

    Article • Review of Scientific Instruments, September 2022, American Institute of Physics

    Aaron Hossack, Chris Hansen

  29. Exploring data-driven models for spatiotemporally local classification of Alfvén eigenmodes

    Article • Nuclear Fusion, August 2022, Institute of Physics Publishing

    Chris Hansen

  30. Effect of injected flux and current temporal phasing on self-organization in the HIT-SI3 experiment

    Article • Physics of Plasmas, May 2022, American Institute of Physics

    Chris Hansen

  31. DIII-D research advancing the physics basis for optimizing the tokamak approach to fusion energy

    Article • Nuclear Fusion, April 2022, Institute of Physics Publishing

    Prof Eun-jin Kim, Chris Hansen, Dr Giridhar Nandipati

  32. Helicity Injected Torus (HIT): Sustainment of Stable Equilibria Through Self-organization

    Article • February 2022, Office of Scientific and Technical Information (OSTI)

    Chris Hansen

  33. Neutral beam prompt loss in LTX- β

    Article • Nuclear Fusion, October 2021, Institute of Physics Publishing

    Chris Hansen

  34. A dimensionality reduction algorithm for mapping tokamak operational regimes using a Variational Autoencoder (VAE) neural network

    Article • Nuclear Fusion, October 2021, Institute of Physics Publishing

    Chris Hansen

  35. Promoting global stability in data-driven models of quadratic nonlinear dynamics

    Article • Physical Review Fluids, September 2021, American Physical Society (APS)

    Chris Hansen

  36. Suppression of MHD modes with active phase-control of probe-injected currents

    Article • Nuclear Fusion, August 2021, Institute of Physics Publishing

    Chris Hansen

  37. Physics-constrained, low-dimensional models for magnetohydrodynamics: First-principles and data-driven approaches

    Article • July 2021, American Physical Society (APS)

    Chris Hansen

  38. Toroidal plasma acceleration due to NBI fast ion losses in LTX-β

    Article • Plasma Physics and Controlled Fusion, July 2021, Institute of Physics Publishing

    Chris Hansen

  39. High-speed feedback control of an oscillating magnetic helicity injector using a graphics processing unit

    Article • Review of Scientific Instruments, May 2021, American Institute of Physics

    Chris Hansen

  40. Driven resonant current amplification in self-organized plasma configurations with uniform λ and plasma pressure confinement

    Article • Physics of Plasmas, February 2021, American Institute of Physics

    Chris Hansen

  41. Effect of geometric and magnetic boundary conditions on magnetic islands in 3D force-free ideal MHD equilibria

    Article • Nuclear Fusion, December 2020, Institute of Physics Publishing

    Chris Hansen

  42. Oxidation of lithium plasma facing components and its effect on plasma performance in the Lithium Tokamak eXperiment-β

    Article • Plasma Physics and Controlled Fusion, November 2020, Institute of Physics Publishing

    Chris Hansen

  43. Erratum: “Two-temperature effects in Hall-MHD simulations of the HIT-SI experiment” [Physics of Plasmas, 27(7), 072505, 2020]

    Article • Physics of Plasmas, November 2020, American Institute of Physics

    Chris Hansen

  44. Two-temperature effects in Hall-MHD simulations of the HIT-SI experiment

    Article • Physics of Plasmas, July 2020, American Institute of Physics

    Chris Hansen

  45. Effects of temperature and density evolution in MHD simulations of HIT-SI

    Article • Physics of Plasmas, April 2020, American Institute of Physics

    Chris Hansen, Thomas Jarboe

  46. Characterizing magnetized plasmas with dynamic mode decomposition

    Article • Physics of Plasmas, March 2020, American Institute of Physics

    Chris Hansen

  47. Initial Results From the Newly Upgraded LTX-β

    Article • IEEE Transactions on Plasma Science, January 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Chris Hansen

  48. The source of solar magnetic fields

    Article • Physics of Plasmas, September 2019, American Institute of Physics

    Aaron Hossack, Thomas Jarboe, Chris Hansen

  49. Magnetic perturbation diagnostics in the high-temperature lithiated environment of LTX-β

    Article • Review of Scientific Instruments, October 2018, American Institute of Physics

    Chris Hansen

  50. Magnetometer-Based Attitude Determination for Deployed Spin-Stabilized Spacecraft

    Article • Journal of Guidance Control and Dynamics, November 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Thomas Roberts, Chris Hansen

  51. Measurement of scrape-off-layer current dynamics during MHD activity and disruptions in HBT-EP

    Article • Nuclear Fusion, July 2017, Institute of Physics Publishing

    Chris Hansen

  52. Observation of Flat Electron Temperature Profiles in the Lithium Tokamak Experiment

    Article • Physical Review Letters, July 2017, American Physical Society (APS)

    Chris Hansen

  53. Compatibility of lithium plasma-facing surfaces with high edge temperatures in the Lithium Tokamak Experiment

    Article • Physics of Plasmas, May 2017, American Institute of Physics

    Chris Hansen

  54. Equilibrium reconstruction with 3D eddy currents in the Lithium Tokamak eXperiment

    Article • Physics of Plasmas, April 2017, American Institute of Physics

    Chris Hansen

  55. Numerical studies and metric development for validation of magnetohydrodynamic models on the HIT-SI experimenta)

    Article • Physics of Plasmas, May 2015, American Institute of Physics

    Chris Hansen

  56. Simulation of injector dynamics during steady inductive helicity injection current drive in the HIT-SI experiment

    Article • Physics of Plasmas, April 2015, American Institute of Physics

    Chris Hansen

  57. Development of validation metrics using biorthogonal decomposition for the comparison of magnetic field measurements

    Article • Plasma Physics and Controlled Fusion, March 2015, Institute of Physics Publishing

    Chris Hansen

  58. A Proof of Principle of Imposed Dynamo Current Drive: Demonstration of Sufficient Confinement

    Article • Fusion Science & Technology, November 2014, Taylor & Francis

    Chris Hansen

  59. Sustained spheromaks with ideal n = 1 kink stability and pressure confinement

    Article • Physics of Plasmas, August 2014, American Institute of Physics

    Chris Hansen

  60. Relaxation-time measurement via a time-dependent helicity balance model

    Article • Physics of Plasmas, January 2013, American Institute of Physics

    Chris Hansen

  61. Imposed-dynamo current drive

    Article • Nuclear Fusion, July 2012, Institute of Physics Publishing

    Chris Hansen

  62. Advances in Steady Inductive Helicity Injection for Plasma Startup and Toroidal Current Drive

    Article • IEEJ Transactions on Fundamentals and Materials, January 2012, Institute of Electrical Engineers of Japan (IEE Japan)

    Chris Hansen

  63. Evidence for Separatrix Formation and Sustainment with Steady Inductive Helicity Injection

    Article • Physical Review Letters, October 2011, American Physical Society (APS)

    Chris Hansen

  64. Recent results from the HIT-SI experiment

    Article • Nuclear Fusion, May 2011, Institute of Physics Publishing

    Chris Hansen