Difference between revisions of "LB 170048 Nickel Foil Consistency Check"

From New IAC Wiki
Jump to navigation Jump to search
Line 50: Line 50:
 
||BG Average || 303.18 +/- 62.03 || 329.85 +/- 71.97 || 1027.25 +/- 122.10 || 603.31 +/- 84.02   
 
||BG Average || 303.18 +/- 62.03 || 329.85 +/- 71.97 || 1027.25 +/- 122.10 || 603.31 +/- 84.02   
 
|-
 
|-
||Integral of Original Window ||  
+
||Integral of Original Window || 1.036e^4 || 1.369e^4 || 2.257e^4 || 1.257e^4
 
|-
 
|-
 
||Integral of Expanded Window ||  
 
||Integral of Expanded Window ||  

Revision as of 17:49, 1 November 2017

Since the Selenium activities are not matching predicted values, check nickel foils from the front and rear to try and get that the activity is the same. Below is a table of pictures and information from ROOT sessions. For each of these, the spectrum was weighted by the inverse of the mass. For the front foil the mass was 1.3310g and for the rear foil the mass was 1.2196g. If the background subtraction is negative, take the mean of the two numbers.

To find the error in the background, the expanded window's background was subtracted from the original window's background. The signal was found by integrating the gaussian over the original window with an adjusted amplitude, which has been background subtracted and fed into mathematica.


5/23/17 5/26/17 5/29/17 5/30/17
Original Window 170048 003 FrontFoil Pos70 5 23 17.png 170048 003 FrontFoil 5 26 17.png 170048 003 FrontFoil Pos10 5 29 17.png 170048 003 FrontFoil Pos10 5 30 17.png
Expanded Window 170048 003 FrontFoil Pos70 ExpWindow 5 23 17.png 170048 003 FrontFoil Pos30 5 26 17 ExpWindow.png 170048 003 FrontFoil Pos10 5 29 17 ExpWindow.png 170048 003 FrontFoil Pos10 5 30 17 ExpWindow.png
Original Background (Integrated) 388.8 +/- 63.2 297.2 +/- 72.8 1145.6 +/- 115.2 1024 +/- 92
Expanded Window Background (Integrated) 307.9 +/- 35.8 411.80 +/- 42.90 1058 +/- 68 681.4 +/- 53.4
BG Average 348.35 +/- 72.64 354.5 +/- 84.5 1101.8 +/- 133.77 852.7 +/- 106.37
Integral of Original Window 1.312e^4 1.777e^4 2.479e^4 1.69e^4
Integral of Expanded Window 1.32e^4 1.792e^4 2.506e^4 1.704e^4
Integral Difference 80 150 270 140
Counts 13120 +/- 80 17770 +/- 150 24790 +/- 270 16900 +/- 140
Signal (BG subtracted Counts) 12771.65 +/- 108.06 17415.5 +/- 172.16 23688.2 +/- 301.32 16047.3 +/- 175.78
Efficiency 8.9e^-5 +/- 1.8e^-6 4.22e^-4 +/- 4.671e^-6 0.0031 +/- 3.71e^-5 0.0031 +/- 3.71e^-5
.dat file entry 13.0745843 +/- 0.0211725 11.82996708 +/- 0.0148404 10.14076001 +/- 0.0174652 9.751499466 +/- 0.0162239


The information for the rear foil is shown below

5/23/17 5/26/17 5/29/17 5/30/17
Original Window 170048 004 RearFoil 5 23 17.png 170048 004 RearFoil Pos30 5 26 17.png 170048 004 RearFoil Pos10 5 29 17.png 170048 004 RearFoil Pos10 5 30 17.png
Expanded Window 170048 004 RearFoil Pos70 5 23 17 Expanded.png 170048 004 RearFoil Pos30 5 26 17 Expanded.png 170048 004 RearFoil Pos10 5 29 17 Expanded.png 170048 004 RearFoil Pos10 5 30 17 Expanded.png
Original Background (Integrated) 344.16 +/- 53.44 273.2 +/- 60.16 1164.8 +/- 105.6 718.32 +/- 72
Expanded Window Background (Integrated) 262.2 +/-31.5 386.5 +/- 39.5 889.7 +/- 61.3 488.3 +/- 43.3
BG Average 303.18 +/- 62.03 329.85 +/- 71.97 1027.25 +/- 122.10 603.31 +/- 84.02
Integral of Original Window 1.036e^4 1.369e^4 2.257e^4 1.257e^4
Integral of Expanded Window
Integral Difference
Counts
Signal (BG subtracted Counts)
Efficiency 8.9e^-5 +/- 1.8e^-6 4.22e^-4 +/- 4.671e^-6 0.0031 +/- 3.71e^-5 0.0031 +/- 3.71e^-5
.dat file entry