NeXus and openPMD: Relevant data structures for Laser-plasma experiments and low-hanging fruits

* NeXus provides a plethora of data structures that can be immediately used. * openPMD provides scalability to bigdata workflows and flexibility with respect to data format used. * Vocabulary extensions for describing meta-data for laser-plasma experiments mainly require Lasers, Targetry and Timing. * Candidate NeXus/H5 software packages for early openPMD migration: ** NeXus-API: NeXpy ** NeXus-Validator: punx ** NeXus-data source for browsing: h5wasm * To achieve critical mass: Provide value for Laser-Plasma experiments, stay pragmatic with design discussions, do small steps, but with an idea where to go.