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arXiv · 2503.18399

T3ST code: Turbulent Transport in Tokamaks via Stochastic Trajectories

D. I. Palade·L. M. Pomarjanschi
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Abstract

We introduce the Turbulent Transport in Tokamaks via Stochastic Trajectories (T3ST) code, designed to address the problem of turbulent transport using a statistical approach complementary to gyrokinetics. The code employs test-particle methods to track the dynamics of charged particles in axisymmetric magnetic equilibria, accounting for both turbulence and Coulomb collisions. The turbulence is decoupled from plasma dynamics and represented through a statistical ensemble of synthetic random fields with specified spectral properties. This approach enables T3ST to compute transport coefficients as Lagrangian correlations - orders of magnitude faster than gyrokinetic codes.

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D. I. Palade, L. M. Pomarjanschi. 2025-03-24. T3ST code: Turbulent Transport in Tokamaks via Stochastic Trajectories. https://arxiv.org/abs/2503.18399

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