Physics Overview of Infinity Two

ORAL

Abstract

Type One Energy is developing a high magnetic field, optimized stellarator for a direct path to fusion energy [1]. Infinity Two is a fusion pilot plant (FPP) baseline plasma physics design consistent with a set of buildable coils, divertor solution, required shielding, and a blanket with sufficient tritium breeding ratio. We describe the physics properties of Infinity Two, a quasi-isodynamic stellarator, optimized appealing to a max-J approach (J being the second adiabatic invariant), and designed to operate at high plasma density and high magnetic field. We will discuss the physics properties that make Infinity Two a suitable FPP candidate, namely its reduced Neoclassical and turbulent transport, small bootstrap current, low alpha-particle losses to the first wall, magnetohydrodynamic (MHD) stability, and attainable operation point with high fusion gain.

[1] C. C. Hegna, et al. The infinity two fusion pilot plant baseline plasma physics design. Journal of Plasma Physics, 91(3):E76, 2025.

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Presenters

  • Katia Camacho Mata

    • Type One Energy Group, Inc.
    • Type One Energy

Authors

  • Katia Camacho Mata

    • Type One Energy Group, Inc.
    • Type One Energy

  • David Anderson

    • Type One Energy Group, Inc.
    • Type One Energy Group

  • Eric C Andrew

    • Type One Energy Group, Inc.

  • Aaron Bader

    • Type One Energy Group

  • John Canik

    • Type One Energy Group

  • Leopoldo Carbajal

    • Type One Energy

  • Antoine J Cerfon

    • Type One Energy Group - Canada Inc

  • W. A Cooper

    • Type One Energy Group

  • Nick M Davila

    • Type One Energy Group

  • Aritra De

    • Type One Energy Group

  • Joey M Duff

    • Type One Energy Group, Inc.

  • Heinke G Frerichs

    • University of Wisconsin - Madison

  • Bonita Goh

    • Type One Energy Group, Inc.

  • Erik M Granstedt

    • Type One Energy Group

  • Walter Guttenfelder

    • Type One Energy Group

  • Chris C Hegna

    • Type One Energy Group
    • Type One Energy
    • Type One Energy Group, Inc.

  • Damien P Huet

    • Type One Energy Group
    • Type One Energy

  • Madelynn M Knilans

    • Type One Energy Group

  • Matt Landreman

    • Type One Energy Group, Inc.

  • Guillaume Le Bars

    • Type One Energy Group

  • Annie Malkus

    • Type One Energy Group, Inc.
    • Type One Energy Group

  • Noah Roth Mandell

    • Type One Energy Group

  • Bharat Medasani

    • Type One Energy Group

  • John Morrissey

    • Type One Energy Group, Inc.

  • Thomas Sunn Pedersen

    • Type One Energy Group

  • Luquant Singh

    • Type One Energy Group, Inc.
    • Type One Energy Group

  • Priyanjana Sinha

    • Type One Energy Group

  • John Schmitt

    • Type One Energy Group, Inc.

  • Joseph Talley

    • Type One Energy

  • Danah velez

    • Type One Energy
    • Type One Energy Group

  • Keely Willis

    • Type One Energy Group