Adaptable phase retrieval for coherent transition radiation spectroscopy based on differentiable physics information
Coherent transition radiation (CTR) spectroscopy is a critical diagnostic for characterizing the longitudinal structure of relativistic electron bunches in laser-plasma and conventional accelerators. In practice, recovering the bunch profile from a measured CTR spectrum is an ill-posed phase-retrieval problem. Traditionally, this is addressed using Gerchberg-Saxton (GS)-type iterative algorithms. However, these implementations often rely on explicit inverse propagators, making them difficult to adapt to sophisticated experimental forward models. In this work, we introduce a flexible gradient-based framework for CTR phase retrieval. By leveraging a differentiable forward model, we propose ...
| Authors | Ritz Ann Aguilar, Maxwell LaBerge, Andreas Doepp et al. |
|---|---|
| Primary category | physics.acc-ph |
| Published | 28 April 2026 |
| Last updated at source | 28 April 2026 |
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