Physics Optimization for a New UW-Madison Mid-Scale Quasi-Helically Symmetric Stellarator

POSTER

Abstract

A new mid-scale quasi-helically symmetric (QHS) stellarator should be designed and built as soon as possible to realize the potential of QHS configurations for fusion energy. New advancements in stellarator design greatly improve optimization pathways. In this poster we describe novel metrics for stellarator optimization and present their effects on stellarator design. Design considerations include: turbulent optimization, specifically by maximizing coupling from unstable to stable modes; simplified coil design and plasma boundaries conducive to simpler coils; self-consistent bootstrap current calculations; divertor solutions capable of operating over a range of plasma current; and improvements to energetic particle confinement. Incorporating these elements into a design will lead to a US experimental facility capable of significantly advancing the stellarator concept.

Presenters

  • A. Craig Bader

    Univ of Wisconsin, Madison, University of Wisconsin-Madison

Authors

  • A. Craig Bader

    Univ of Wisconsin, Madison, University of Wisconsin-Madison

  • B.J. J Faber

    Univ of Wisconsin, Madison, University of Wisconsin-Madison, Madison, Wisconsin, USA

  • John C Schmitt

    Auburn Univ, Auburn University

  • David Thomas Anderson

    Univ of Wisconsin, Madison, University of Wisconsin-Madison, Madison, Wisconsin, USA

  • Cary B Forest

    University of Wisconsin, Madison, Univ of Wisconsin, Madison, University of Wisconsin - Madison

  • Raymond John Fonck

    University of Wisconsin-Madison, University of Wisconsin–Madison, Univ of Wisconsin, Madison, University of Wisconsin - Madison

  • Heinke G Frerichs

    Univ of Wisconsin, Madison, University of Wisconsin - Madison, U-Wisconsin

  • C.C. C Hegna

    Univ of Wisconsin, Madison, University of Wisconsin-Madison, University of Wisconsin, Madison, Univ of Wisconsin - Madison, University of Wisconsin-Madison, Madison, Wisconsin, USA

  • Thomas Kruger

    Univ of Wisconsin, Madison

  • Matt Landreman

    Univ of Maryland-College Park

  • Samuel A Lazerson

    Princeton Plasma Phys Lab, PPPL

  • I.J. J McKinney

    Univ of Wisconsin, Madison, University of Wisconsin-Madison, Madison, Wisconsin, USA

  • M.J. J. Pueschel

    IFS / UT Austin, University of Texas at Austin, IFS/UT Austin, IFS / UT Austin, IFS / UT Austin

  • John Stephen Sarff

    Univ of Wisconsin, Madison, University of Wisconsin, Madison, UW-Madison

  • Evan M Schilling

    Univ of Wisconsin, Madison

  • Oliver Schmitz

    Univ of Wisconsin, Madison, University of Wisconsin - Madison, University of Wisconsin

  • Joseph Nathan Talmadge

    Univ of Wisconsin, Madison, University of Wisconsin-Madison, Madison, Wisconsin, USA, University of Wisconsin-Madison

  • Paul Willis Terry

    University of Wisconsin-Madison, Univ of Wisconsin, Madison

  • Andrew Simon Ware

    University of Montana, Univ of Montana