HRRL Pos Test 26Jul2012 Data Ana com r3686 r3687
comparing r3686 and r3687
| NaI right | 
|
| NaI left | 
|
| NaI right: in - out |  
|
| NaI left: in - out |  
|
e+ rate
e+ rate on right: 0.3619 Hz
e+ rate on left: 0.05706 Hz
Rough e- rate estimate
[math]\displaystyle{ I = \frac{Q}{t} = \frac{V}{R} }[/math], so [math]\displaystyle{ Q = \frac{Vt}{R} }[/math]
According to: [Calibration]
[math]\displaystyle{ Vt = 1.201~\mu Vs }[/math]
[math]\displaystyle{ Q = \frac{1.201~\mu Vs}{50 \Omega } }[/math] = 24.02 nC
Electron charges per second under 100 Hz reprate is: 100Q/s = 2402 nC/s.
Unit charge: [math]\displaystyle{ 1.602 \times 10^{-19} }[/math]C.
Number of electrons per second: [math]\displaystyle{ \frac{2402~nC/s }{1.602 \times 10^{-19}~C} = 1.5 \times 10^{13} }[/math] Hz.
e+/e- ratio
Right: [math]\displaystyle{ \frac{0.3619~Hz }{1.5 \times 10^{13} ~Hz } = 0.24 \times 10^{-13} = 2.4 \times 10^{-14} }[/math]
Left: [math]\displaystyle{ \frac{0.05706~Hz }{1.5 \times 10^{13} ~Hz } = 0.038 \times 10^{-13} = 3.8 \times 10^{-15} }[/math]
You need to require 511s in both detectors using a software cut.
Software cut? What kind of software cut?