HRRL Pos Test 26Jul2012 Data Ana com r3688 r3689

comparing r3688 and r3689

NaI right
NaI left
NaI right: in - out
NaI left: in - out

e- estimate with ADC9

Gaussian fit center is at: 2077.77 +- 0.70

The calibration: 1.22 nV s /ADC channel

Thar area is: 2534.88 nV s

[math] Q = \frac{Vt}{R}[/math]

According to: [Calibration]

[math]Vt = 2.53488~\mu Vs[/math]

[math] Q = \frac{2.53488~\mu Vs}{50 \Omega }[/math] = 50.69 nC

Electron charges per second under 100 Hz reprate is: 100Q/s = 5069 nC/s.

Unit charge: [math]1.602 \times 10^{-19}[/math]C.

Number of electrons per second: [math]\frac{5069~nC/s }{1.602 \times 10^{-19}~C} = 3.16417 \times 10^{13} [/math] Hz.

rough estimate on e-/e+ ratio

e+ rate on right: 0.3916 Hz

e+ rate on : 0.1588 Hz

e- rate from FC current: [math] 1.5 \times 10^{13} [/math] Hz.

on right: e-/e+ = [math] 0.3916 / 1.5 \times 10^{13} = 2.6 \times 10^{-14} [/math]

on left: e-/e+ = [math] 0.1588 / 1.5 \times 10^{13} = 1.05867 \times 10^{-14} [/math]

e- rate from ADC9: [math] 3.16417 \times 10^{13} [/math] Hz.

on right: e-/e+ = [math] 0.3916 / 3.16417 \times 10^{13} = 1.23761 \times 10^{-14} [/math]

on left: e-/e+ = [math] 0.1588 / 3.16417 \times 10^{13} = 0.501869 \times 10^{-14} [/math]