MicroBooNE

MicroBooNE (Micro Booster Neutrino Experiment) was a short-baseline neutrino experiment at Fermilab that operated from 2015 to 2021. It used a liquid argon time projection chamber (LArTPC) containing 170 tonnes of liquid argon (85 tonnes active mass), making it one of the largest LArTPC detectors of its time.

The experiment studied neutrino interactions in the ~0.1–2 GeV range using the Booster Neutrino Beam (BNB) and aimed to address the anomalous excess of electron-like events observed by the MiniBooNE experiment, as well as to measure neutrino cross sections and develop LArTPC technology for future experiments such as DUNE.

The MicroBooNE detector recorded ionization charge signals on three planes of sense wires (U, V, Y) and detected scintillation light via photomultiplier tubes. The resulting data are naturally represented as 2D wire-time images, making the experiment well-suited to image-based deep learning techniques.

MicroBooNE released public LArTPC overlay samples to support collaborative software development beyond the collaboration. The samples combine simulated neutrino interactions with real off-beam data, providing realistic cosmic-ray backgrounds and detector noise. Two data formats are provided: full art/ROOT for LArTPC experts and simplified HDF5 for broader AI/ML users. Releases include inclusive BNB samples and intrinsic electron neutrino samples, with optional wire-waveform content.