Trends from the DESC omnigenity stellarator database
ORAL
Abstract
Omnigenous magnetic fields guarantee confinement of all trapped particles, making omnigenity a prerequisite for high-performance stellarators. We have assembled and analyzed a large database of omnigenous configurations featuring poloidal (OP), helical (OH), toroidal (OT), and piecewise omnigenity. After outlining the multi-objective optimization workflow, we identify trends that inform reactor design.
A key result is that OH and OT configurations naturally achieve a positive magnetic well, lower 1/nu neoclassical transport (measured by eps_eff), and improved energetic-particle confinement (at least for the OH case) compared with OP configurations.
We present similar trends for all the equilibria in the database.
A key result is that OH and OT configurations naturally achieve a positive magnetic well, lower 1/nu neoclassical transport (measured by eps_eff), and improved energetic-particle confinement (at least for the OH case) compared with OP configurations.
We present similar trends for all the equilibria in the database.
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Presenters
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Rahul Gaur
Princeton University
Authors
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Rahul Gaur
Princeton University
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Yigit Elmacioglu
Princeton University
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Victor F Pacheco
CIEMAT
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Dario Panici
Princeton University
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Greta Isabella Hibbard
Ohio University
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Jose Luis Velasco
CIEMAT
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Daniel William Dudt
Thea Energy
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Rory Conlin
University of Maryland
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Michael Churchill
Princeton Plasma Physics Laboratory (PPPL), Princeton Plasma Physics Laboratory
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Egemen Kolemen
Princeton University