Muon decay in an Icetop Tank
IceCube 2007 Home
This is a graph of two signals from OMs in our tank. Our trigger was done by a muon telescope above the tank coupled with an oscilloscope looking for a secondary signal after the initial large signal. The large signal indicates a muon and the smaller secondary signal indicates an electron as a result of muon decay. The two peaks in this example are 1.6 µs apart.
Here is a histogram of the time between muon and electron events fit with an exponential decay curve. The data included about 2300 events for which the signals from two different optical modules were averaged to determine the best delta-t value. The decay constant t1 found from the fit is 2.1± .5 µs.
IceCube 2007 Home
