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welch_icc11_presentation.pdf2011-08-24 16:00:01Dale Welch
iccpaperwelch.pdf2011-08-24 15:58:50Dale Welch

Initial particle-in-cell modeling of the upgraded PFRC-2 field-reversed configuration device with odd-parity rotating magnetic fields

Author: Dale R. Welch
Requested Type: Consider for Invited
Submitted: 2011-06-06 16:54:52

Co-authors: S. A. Cohen, T. C. Genoni, N. L. Bruner

Contact Info:
Voss Scientific
418 Wachington St. SE
Albuquerque, New Mexico   87108
USA

Abstract Text:
We report on 3-D, fully electromagnetic kinetic modeling of the field-reversed-configuration (FRC) formation by odd-parity rotating magnetic fields (RMFo) in the PFRC-1 and upgraded PFRC-2. The simulation model includes the Lorentz force, atomic physics effects, externally applied time-varying electromagnetic fields, and material boundary conditions. The new simulations use the new magnetic-implicit (MI) energy-conserving technique that permits under-resolution of the electron cyclotron frequency. The MI results are first benchmarked against those published of PFRC-1 field reversal using the energy-conserving-explicit technique. We then report on initial simulations of PFRC-2. The PFRC-2 machine is 8x larger in volume with 10x larger Bz field, higher power RMFo, and roughly 10x larger plasma density. We will discuss the relative computational speed and accuracy of the new numerical technique in the dynamic FRC conditions.

Characterization: A7,E2

Comments:

University of Washington

Workshop on Innovation in Fusion Science (ICC2011) and
US-Japan Workshop on Compact Torus Plasma
August 16-19, 2011
Seattle, Washington

ICC 2011