Ghost Particle: Neutrino Detector (2D)

This simplified side-view diagram strips the neutrino-detection problem down to a single cross-section: a beam of rays crosses a slab of target material, and the real exponential interaction law P = 1 − e^(−nσL) decides how many of them ever leave a mark. Slab thickness, target density and beam energy set the physical inputs n, σ and L exactly as in the 3D tank version, while flux and a time-acceleration control let you watch the same real interaction rate R scale from "practically never" to "often" — the flattened view makes the geometry and the rare-event statistics easy to read at a glance rather than orbit around.