Target Normal Sheath Acceleration (TNSA
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A Surrogate Model for Proton Spectrum Prediction to Map Transitions in Laser-Ion Acceleration
arXiv:2606.06210v1 Announce Type: new Abstract: We present a physics-guided, decoupled dual-branch surrogate model to predict continuous proton energy spectra from laser-driven ion acceleration. Integrating a $\beta$-VAE for spectral feature extraction with a parallel multi-layer perceptron for scalar boundary enforcement, the framework achieves a predictive accuracy of $R^2 = 0.94$ for the maximum cutoff energy and $R^2 = 0.94$ for the total particle flux, with a median per-sample spectral...