Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session NP11: Poster Session V: In-Person, Hall A (9:30-11:00am) and Virtual Poster Presentations (11:15am-12:30pm)
MFE: Stellerators
HED: High Energy Density
BEAMS: Short Pulse Laser Plasmas
HED: Short Pulse Laser Plasma
SPACE: Space Plasmas
9:30 AM - 12:30 PM
Wednesday, October 19, 2022
Room: Exhibit Hall A and Online
Abstract: NP11.00024 : Stellarator Linking Axisymmetric Mirrors (SLAM)*
Presenter:
Tony Qian
(Princeton University)
Authors:
Tony Qian
(Princeton University)
Xu Chu
(Princeton University)
Henry Fetsch
(Princeton University)
Dingyun Liu
(Princeton University)
Richard Nies
(Princeton University)
Jason Parisi
(Princeton University)
Adam Rutkowski
(Princeton University)
Jacob A Schwartz
(Princeton University)
Charles P Swanson
(Princeton University)
There are significant challenges in scaling optimized stellarators to fusion reactors, in particular the construction of a large volume 3D device which has a breeding blanket integrated with complex geometry. Meanwhile, mirrors have large volume and simple coils, but face plasma physics issues due to open field line end loss, phase space anisotropy, MHD stability, and turbulence (once confinement allows sufficiently high temperature gradients).
We propose a hybrid approach that overcomes challenges of each, enabled by modern stellarator optimization. It consists of axisymmetric mirror cells linked by stellarator segments. Most of the plasma volume is in the mirror cells, where the typical loss cone is replaced by a source cone from the stellarator. The goal is to combine the simple engineering of axisymmetric, linear mirror cells with the good plasma confinement and stability of stellarators.
Two questions arise: do such flux surfaces exist? If so, are they MHD stable? We discuss the affirmative answers to these questions, as well as reactor design points and neutronics considerations.
*This work is funded by DOE contract No. DE-AC02-09CH11466 and NSF GRFP Grant No. #DGE-2039656.
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