Description
Currently, the only experimentally validated measurement of Beyond Standard Model physics is neutrino oscillation; a phenomenon whereby neutrinos can oscillate between their three flavours. The T2K (Tokai to Kamioka) experiment is a long-baseline neutrino oscillation experiment with the goal of making precise measurements of the free parameters of the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) matrix, which describes the mismatch between neututrino weak and mass eigenstates as a unitary rotation matrix. The Super Fine Grain Detector (SuperFGD) is an upgraded component of the T2K experiment introduced to improve upon the reconstruction capabilities of its predecessor due to a finer granularity, improved timing resolution, increased efficiency and increased target mass. Analyses of the systematic uncertainties, data quality, and maintenance of the SuperFGD have been paramount in facilitating better understanding of neutrino beam, cosmic, and LED data; allowing for crucial improvements towards the understanding of neutrino oscillation parameters using analysis methods developed for the SuperFGD. Furthermore, improvements to the understanding of neutrons from antineutrino Charged-Current-Quasi-Elastic interactions serve to greatly improve our understanding of antineutrino energy reconstruction, which is pivotal to the overall goal of understanding neutrino oscillations.