Bulletin of the American Physical Society
60th Annual Meeting of the APS Division of Plasma Physics
Volume 63, Number 11
Monday–Friday, November 5–9, 2018; Portland, Oregon
Session CP11: Poster Session II: Basic Plasma Physics; Boundary, PMI, Proto-MPEX; International Tokamaks; Turbulence and Transport; Other Configurations; Z-pinch, Dense Plasma Focus and MagLIF (2:00pm-5:00pm)
Monday, November 5, 2018
OCC Room: Exhibit Hall A1&A
Abstract ID: BAPS.2018.DPP.CP11.190
Abstract: CP11.00190 : MHD Stability of a Magnetized Target During Non-Self-Similar Compression
Dylan P. Brennan
General Fusion is designing a magnetized target fusion test reactor that will compress a toroidal plasma inside a liquid metal cavity to heat it to fusion conditions. A magnetized plasma will heat adiabatically if rapidly compressed in a flux conserver (FC) following simple scalings in self-similar geometry.
In practice, variation of geometry from self-similarity complicates the equilibrium and stability calculations that drive the design process. Here we present computations of the plasma stability evaluated for the entire compression of realistic FC geometries. Sequences of equilibria are generated using CORSICA under ideal and adiabatic compression, conserving both the safety factor and entropy profiles. The ideal MHD stability is then computed with DCON. The initial plasma pressure and current density profiles are varied to optimize the stability boundaries. Geometry was found to affect the stability mainly via the q profile. Most cases with q0<1 are found to be n=1 unstable, while those with q0>1 can be susceptible to low n modes. However, viable initial equilibria are found that remain stable throughout the compression.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DPP.CP11.190
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
1 Physics Ellipse, College Park, MD 20740-3844
Editorial Office 1 Research Road, Ridge, NY 11961-2701 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700