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NaNIsaac/README.md

Isaac Yong (용이삭)

X-ray physics · Scientific computing

The name NaNIsaac recovered from its diffraction intensity by phase retrieval

Only the intensity |F|² goes in. QoraPhase recovers the lost phase and the object; script.

M.S. student in Physics at Sogang University.

I study X-ray scattering and diffraction, and build the software around the experiment: simulation, inverse problems, coherent imaging, and beamtime data analysis. Longer write-ups live on my website.

Now: poster P2.17 at the KPS 2026 Fall Meeting, Jeju, 22 October: transient formation of acoustic Bragg satellites (TraTT).

Science Tools
QoraPhase · JAX phase retrieval for CDI and BCDI codigest · codebase, diffs and terminal output as LLM context
ReflectoLearn · differentiable X-ray reflectivity fitting deai · strip AI co-author trailers from git history
QoraFlow · time-resolved X-ray data at PAL-XFEL hanfix · re-run commands typed in the Korean layout
TraTT · time-dependent Takagi-Taupin diffraction clippath · clipboard screenshot to a file path for terminal agents
xray.ooguy · offline calculators for old beamline PCs roi_rectangle · rectangular ROIs for NumPy images

Upstream

Pepper's Harvest

Pepper (후추), my black-and-tan Shiba Inu, takes care of the contribution garden.

Pepper harvesting GitHub contributions

Website · Notes · X-ray tools · Email

Note: My GitHub username was changed from "SJB7777" to "NaNIsaac" in October 2026.

Pinned Loading

  1. QoraFlow QoraFlow Public

    Data processing toolkit for time-resolved X-ray experiments at PAL-XFEL

    Jupyter Notebook 6

  2. roi_rectangle roi_rectangle Public

    Rectangular regions of interest (ROI) for images and NumPy arrays

    Python 1

  3. codigest codigest Public

    Turn your codebase, diffs and terminal output into LLM-ready context. CLI + MCP server for AI coding agents.

    Python 1

  4. QoraPhase QoraPhase Public

    JAX-native, composable phase retrieval for coherent diffraction imaging (CDI, BCDI)

    Python 1

  5. TraTT TraTT Public

    Time-dependent dynamical X-ray diffraction (Takagi-Taupin) for transient acoustic Bragg satellites

    Python 1

  6. hanfix hanfix Public

    Fix and re-run commands typed with the Korean keyboard layout on (2-set <-> QWERTY)

    Rust