Advancements in Space-Based Neutrino Detection: Exploring Voxel Integration through Lab Tests and Simulations.*

Our research focuses on the development of a prototype voxel-based neutrino detector to operate in space. By studying the interaction between neutrinos and gallium mediated by the W boson, we exploit electrons ejected from the interaction to estimate the neutrino's original direction. This presentation showcases the results of lab tests conducted on GAGG:Ce scintillating crystals, including characterization of light yield, energy calibration, and timing using a phototube with gamma sources. We investigate the integration of crystals with SiPMs to collect signal data using beta and gamma sources, both individually and in specific orientations to assess beta tracking capabilities and gamma detection across multiple voxels. Additionally, we explore the potential benefits of employing multiple SiPMs per crystal for enhanced signal quality and tracking resolution. To complement the lab tests, we utilize Geant4 simulations to incorporate the obtained results and evaluate various detector geometries and detection methods. Simulation-based analyses compare the original neutrino direction with that of the ejected electron, enabling the evaluation and testing of tracking algorithms, such as linear regression, Monte Carlo methods, and other potential techniques.