Speaker
Description
The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) is a 26-ton gadolinium-doped water Cherenkov detector located at the Booster Neutrino Beam at Fermilab. ANNIE's primary physics goal is to measure the neutron multiplicity from neutrino-nucleus interactions in water, improving our understanding of neutrino interactions and helping reduce systematic uncertainties in future neutrino measurements. In addition to its physics goals, ANNIE is an R&D testbed for developing advanced detector technologies. Notably, it has demonstrated the first detection of neutrino interactions using Large-Area Picosecond Photodetectors (LAPPDs), offering sub-100 ps timing resolution to enhance event reconstruction. ANNIE has also been used to test the Water-based Liquid Scintillator (WbLS) technology for neutrino detection in next-generation neutrino experiments. This presentation will provide an overview of recent progress in ANNIE, highlighting the LAPPD-enabled reconstruction techniques and early findings from the latest neutrino data analysis.
