Lifetime Study

Cosmic ray muons reach the detector with varying amounts of energy and deposit that energy in the counter. Some are trapped in the counter and eventually decay into an electron, a neutrino and an anti-neutrino. These three new particles zoom away (to conserve the momentum of the stopped muon).


Click to see an animation.


Each counter is connected via a channel to the DAQ. The channel that seeks decays looks for a light signal (the incoming muon) and then waits. When the counter later detects the electron's signal within a certain time window, we know the amount of time between the muon stopping and decaying.


Tutorial Pages: 1 2 3 4 & Analysis