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MicroCHANDLER is a prototype detector for surface-level reactor antineutrino detection made with plastic scintillator cubes (EJ-260). We measured the proton quenching effect in the scintillator with neutron beams of 5-27 MeV at the Triangle Universities Nuclear Laboratory (TUNL). We extracted the Birks' constants from our data. This result improves the energy non-linearity modeling of plastic scintillator detectors in an unprecedented energy range. In addition, the updated energy response function for recoil protons will lead to an improved modeling of fast neutrons, which is needed to optimize the shielding design.

Using high statistics samples of charged-current nu(mu) interactions, the MiniNooNE Collaboration reports a measurement of the single-charged-pion production to quasielastic cross section ratio on mineral oil (CH2), both with and without corrections for hadron reinteractions in the target nucleus. The result is provided as a function of neutrino energy in the range 0.4 GeV < E-nu < 2.4 GeV with 11% precision in the region of highest statistics. The results are consistent with previous measurements and the prediction from historical neutrino calculations., We wish to acknowledge the support of Fermilab, the National Science Foundation, and the Department of Energy in the construction, operation, and data analysis of the MiniBooNE experiment.

Sterile neutrino ($\nu_s$) conversion in meter scale baselines can be sensitively probed using mono-energetic, sub-MeV, flavor pure $\nu_e$'s from an artificial MCi source and the unique technology of the LENS low energy solar $\nu_e$ detector. Active-sterile {\em oscillations} can be directly observed in the granular LENS detector itself to critically test and extend results of short baseline accelerator and reactor experiments., Comment: Submitted to the proceedings of the XII International Workshop on Neutrino Telescopes, March 6-9, 2007, Venice

Properties of the hadronic final state in photoproduction events with large transverse energy are studied at the electron-proton collider HERA. Distributions of the transverse energy, jets and underlying event energy are compared to $\overline{p}p$ data and QCD calculations. The comparisons show that the $\gamma p$ events can be consistently described by QCD models including -- in addition to the primary hard scattering process -- interactions between the two beam remnants. The differential jet cross sections $d\sigma/dE_T^{jet}$ and $d\sigma/d\eta^{jet}$ are measured., Comment: 27 pages, latex, 7 figures appended as uuencoded file

The XENON1T experiment recently reported an excess of events at low electron recoil energies, which may be due to interactions of solar neutrinos inside the detector via a large neutrino magnetic moment. We point out that a $^{51}$Cr neutrino source placed close to the detector can directly test this hypothesis., Comment: 2 pages, 2 figures

This report summarizes the current status of neutrino physics and the broad and exciting future prospects identified for the Neutrino Frontier as part of the 2021 Snowmass Process., Comment: 49 pages, contribution to: 2021 Snowmass Summer Study. Minor updates