Question

How can we detect particles?

Answer 1

Particle-identification detectors. Once a particle has passed through the tracking devices and the calorimeters, physicists have two further methods of narrowing down its identity. Both methods work bydetecting radiation emitted by charged particles.

Answer 2

If both PMTs detect the light in coincidence, the count is tallied. With the use of shielding, cooling of PMTs, energy discrimination, and this coincidence counting approach.