Research code for X-ray diffraction and reflectivity: the questions, the numerical experiments that test them, and the code, data and figures needed to reproduce the results.

• TraTT: time-dependent Takagi-Taupin simulation of how acoustic Bragg satellites form while a GHz sound wave enters a perfect crystal. The solver is on PyPI as tratt; the repository holds the analysis scripts, the lab notebook and the poster source.
• ReflectoLearn: the XRR inverse problem, how well a single X-ray reflectivity curve determines the parameters of a thin film and whether a fitting procedure can be learned. Five registered experiments, indexed in docs/research.

• Transient Formation Dynamics of Acoustic Bragg Satellites in Dynamical X-ray Diffraction. Poster P2.17, KPS 2026 Fall Meeting, Jeju, 22 October 2026.

Each repository states how to rerun its results. Simulated data and figure scripts are kept in the repository; measured data is included only where publication is permitted.

Isaac Yong (website). This organization hosts code; it is not an institution, and papers carry the authors' actual affiliations.