He then scans the effective “pinhole” across his garage, emitting a laser pulse and recording the ... s fast enough to not smear the signal is a photomultiplier tube. But persistence pays ...

Dubbed the Pomelo by [mihai.cuciuc], the detector is a homebrew solid-state scintillation counter made from a thallium-doped cesium iodide crystal and a silicon photomultiplier. The scintillator ...