Muon Speed Using Time of Flight - Advanced Studies (3)

1. Use time of flight to distinguish one-muon signals from two-muon background.
a.) Set up the following configuration to measure muons coming in at an angle.

Make note of the curves representing the one-muon peak and the two-muon peak.

b.) Set up the configuration above with counter 2 between 1 and 4.

As you can see from the graph, the addition of counter 2 does not make much difference. We hoped that the two-muon peak would be reduced, but we've also lost some one-muon events. So, perhaps counter 2 was not well aligned.

c.) Reverse the setup in b.) (reverse counters 1 and 4).

Notice that this graph is basically the mirror image of the graph in b.). Q: Why does this make sense?

Run Peak Mean Traversal Time (mtt) (ns) Std. dev. of mtt (ns) √n Error on√n(ns)
(a) 1-2-4 -23.87 2.58 9 0.29
(b) 4-2-1 +19.82 2.46 10.7 0.22

2. The following series will use counter 2 in a different position.
a.) We shall start with a basic setup of just counters 1 and 4.

b.) The following configuration will also measure muons coming in at an angle. We include counter 2 (veto) below counter 4. Note that the two-muon peak has been reduced.

c.) If we require all three counters, a single muon cannot satisfy the trigger. We see that the two-muon peak is greatly enhanced.



Tutorial Pages: 1 2 3 4 & Analysis