Speaker
Description
Three-dimensional projection scintillator detectors have demonstrated excellent imaging and tracking performance in recent accelerator-based neutrino experiments. To build on this concept, Brookhaven National Laboratory (BNL) is developing a liquid implementation that removes physical voxel boundaries while preserving fine-grained three-dimensional reconstruction. The approach employs an opaque liquid scintillator with a controlled, short scattering length, enabling high-resolution imaging with submerged orthogonal wavelength-shifting fiber readout and reduced mechanical complexity.
This design offers additional advantages, including heavy-metal loading to reduce the effective radiation length. A prototype detector with a fully active liquid volume and 3D fiber readout has been constructed at BNL and recently characterized in a proton beam. This contribution presents the detector concept, measured optical properties of the opaque scintillator, and initial beam-test results on tracking performance and energy resolution.