Simulation results for: Phase-Space Shaping in Wakefield Accelerators due to Betatron Cooling

This repository contains some of the simulation data presented in the recent article titled "Betatron cooling and phase-space ring formation in ultra-relativistic beams". The data are from quasi-3D particle-in-cell (PIC) simulations that investigate how radiation reaction in plasma wakefield accelerators leads to transversely structured, ring-shaped phase-space distributions. The simulations were performed using OSIRIS, a massively parallel and fully relativistic PIC code. The dataset includes spatial density outputs, and raw particle data. All outputs are saved every 20th iteration relative to the original simulation cadence, resulting in a temporally subsampled dataset. Phase-space data are subsampled in particle number and represent a fraction of the simulated macro-particles. Additionally, this repository includes results from a parameter scan used to validate theoretical predictions for the timescale of ring formation. These scans vary the initial beam energy, plasma density, and transverse beam size. Only spatial density outputs are provided for the scans, as they are sufficient for characterizing the ring evolution. These datasets capture the essential dynamics of radiative phase-space structuring and provide a reference for comparison with theoretical models of betatron cooling. More details on the simulations and the analysis of these results can be found in the corresponding article.