Transcript Final Presentation By: Melissa Sussmann and Brooke Cosko

Final Presentation
By: Melissa Sussmann and
Brooke Cosko
The Experiment
A muon lifetime
experiment uses three
or four scintillators to
create an enclosed
volume
Lower energy muons
are trapped and when
they decay an electron
leaves through one of
the scintillators
Wires are not consistently colored
Poor soldering job
The Bases
Hamamatsu HC123-01
Multiplies voltage for
PMT
Plateau Beta
Plateau Base Voltage Beta
2.5
Rate (Hz)
2
1.5
1
0.5
0
0.75
0.8
0.85
0.9
0.95
1
Voltage (V)
1.05
1.1
1.15
1.2
Singles Rate For Base Beta
900
800
Rate (Hz)
700
600
500
400
300
200
100
0
0.75
0.8
0.85
0.9
0.95
1
1.05
1.1
1.15
Voltage (V)
Rate (Hz)
Singles Rate For Base Theta
900
800
700
600
500
400
300
200
100
0
0.75
0.8
0.85
0.9
0.95
Voltage (V)
1
1.05
1.1
1.15
Advice to Take Next Year
Use a vice, especially when testing high voltage
on the bases.
Set the potentiometer in the LBB to 13 volts.
There should be counts of 1 muon per square
centimeter per minute. This translates to 21 hertz
from our large scintillators.
Give the experiment 15 minutes to warm up before
taking data.
When taking data, take it all at once, without
breaks in between, because your results may
change from one time frame to the next.