View source for HRRL Pos Test 26Jul2012 Data Ana com r3688 r3689


===comparing r3688 and r3689===

{| border="1"
|  NaI right || [[File:hrrl_pos_26jul2012_data_ana_comp_r3688_r3689_DR2.png | 100 px]]
|-
| NaI left  || [[File:hrrl_pos_26jul2012_data_ana_comp_r3688_r3689_DL2.png | 100 px]]

|-
| NaI right: in - out  || [[File:hrrl_pos_26jul2012_data_ana_comp_r3688_r3689_sub.png | 100 px]] [[File:hrrl_pos_26jul2012_data_ana_comp_r3688_r3689_sub_511.png | 100 px]]

|-
| NaI left: in - out  || [[File:hrrl_pos_26jul2012_data_ana_comp_r3688_r3689_sub_L.png | 100 px]] [[File:hrrl_pos_26jul2012_data_ana_comp_r3688_r3689_sub_L_511.png | 100 px]]

|-
|}

==== e- estimate with ADC9 ====


[[File:hrrl_pos_26jul2012_data_ana_comp_r3688_ADC9.png | 400 px]]


[[File:hrrl_pos_26jul2012_data_ana_comp_r3688_ADC9_Fit_Par.png | 400 px]]


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: [[https://wiki.iac.isu.edu/index.php/Beam_Test_Jul_27_2012#Beam_Current_Calibration_of_Scint_Left_2 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>