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DOE OSTI · 2566464

Nonperturbative Guiding Center Model for Magnetized Plasmas

Burby, Joshua William [Univ. of Texas, Austin, TX (United States)] (ORCID:0000000317727647)·Maldonado, Ivan A. [Univ. of Texas, Austin, TX (United States)] (ORCID:0009000525202260)·Ruth, Maxwell [Univ. of Texas, Austin, TX (United States)] (ORCID:0000000311792472)·Messenger, Daniel Ames [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000282757888)·Carbajal, L. [Type One Energy Group Inc., Knoxville, TN (United States)]
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Abstract

Perturbative guiding center theory adequately describes the slow drift motion of charged particles in the strongly magnetized regime characteristic of thermal particle populations in various magnetic fusion devices. However, it breaks down for particles with large-enough energy. Here, we report on a data-driven method for learning a nonperturbative guiding center model from full-orbit particle simulation data. We show the data-driven model significantly outperforms traditional asymptotic theory in magnetization regimes appropriate for fusion-born α particles in stellarators, thus opening the door to nonperturbative guiding center calculations.

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70 PLASMA PHYSICS AND FUSION TECHNOLOGYfirst-principles calculations in plasma physicsmagnetized plasmanuclear fusionphase space dynamics

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Burby, Joshua William [Univ. of Texas, Austin, TX (United States)] (ORCID:0000000317727647), Maldonado, Ivan A. [Univ. of Texas, Austin, TX (United States)] (ORCID:0009000525202260), Ruth, Maxwell [Univ. of Texas, Austin, TX (United States)] (ORCID:0000000311792472), Messenger, Daniel Ames [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000282757888), Carbajal, L. [Type One Energy Group Inc., Knoxville, TN (United States)]. 2025-04-30. Nonperturbative Guiding Center Model for Magnetized Plasmas. https://doi.org/10.1103/physrevlett.134.175101

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