Data-driven model for divertor plasma detachment prediction

نویسندگان

چکیده

We present a fast and accurate data-driven surrogate model for divertor plasma detachment prediction leveraging the latent feature space concept in machine learning research. Our approach involves constructing training two neural networks. An autoencoder that finds proper representation (LSR) of state by compressing multi-modal diagnostic measurements, forward using multi-layer perception (MLP) projects set control parameters to its corresponding LSR. By combining decoder network from autoencoder, this new is able predict consistent measurements based on few parameters. In order ensure crucial physics correctly captured, highly efficient 1D UEDGE used generate validation data study. Benchmark between simulations shows our capable provide (usually within percent relative error margin) but with at least four orders magnitude speed-up, indicating performance-wise, it has potential facilitate integrated tokamak design control. Comparing widely two-point and/or formatting, features additional front can be easily extended incorporate richer physics. This study demonstrates complicated scrape-off-layer low-dimensional space. Understanding dynamics utilizing knowledge could open path magnetic fusion energy

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ژورنال

عنوان ژورنال: Journal of Plasma Physics

سال: 2022

ISSN: ['1469-7807', '0022-3778']

DOI: https://doi.org/10.1017/s002237782200085x