LB May 2017 Det B Efficiency

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DetB Calibration is A = -2.8392 +/- 0.592828 , B = 0.815444 +/- 0.000630482

Det A Intercept = -12.208800 slope =1.021270

Detector A is ADCid 0

Detector B is ADCid 1

Theoretical Activities

Ba-133, 9.821 uCi on April 7, 2015, half life 10.51 years, 32.9% for 80.9979 keV line, 18.34% for 302.8508 keV line, 62.05% for the 356.0129 keV line. The sample serial # 1235-74-3 had an activity of 8.53 uCi on May 27, 2017


[math]\left (0.329 \right )\left ( 8.53 \times 10^{-6} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)= 103835.69 Hz [/math] for the 80.9979 keV line
[math]\left (0.1834 \right )\left ( 8.53 \times 10^{-6} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)= 57882.874 Hz [/math] for the 302.8508 keV line


[math]\left (0.6205 \right )\left ( 8.53 \times 10^{-6} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)= 195836.005 Hz [/math] for the 356.0129 keV line

Actual Efficiency

There is a small issue with the calibration when plotting the results in ROOT. The binning along with the calibration create a picket fencing effect that incorrectly displays the results. The effect is shown below.


Run Source Energy (keV) Channel # Position Expected Rate (Hz) ROOT Window (by channel #) HpGe Rate (Hz) HpGe Detector A Efficiency (%)
Ba133_DetA_Farthest_DetB_posN_Efficiency.root Ba-133 80.9979 104 Position N on Detector B 103835.69 [96,108] 52.08 +/- 0.12 0.0562
Ba133_DetA_Pos90_DetB_23_6cm_Efficiency.root Ba-133 80.9979 104 23.6cm From Detector B 103835.69 [96,108] 351.95 +/- 0.6079 0.3389
Ba133_DetA_Pos70_DetB_PosD_Efficiency.root Ba-133 80.9979 104 Position D on Detector B 103830.69 [96,108] 74.39 +/- 0.3553 0.0716
Ba133_DetA_Pos50_DetB_PosC_Efficiency.root Ba-133 80.9979 104 Position C on Detector B 103830.69 [96,108] 82.69 +/- 0.4357 0.0796
Ba133_DetA_Pos44cm_DetB_PosA_Efficiency.root Ba-133 80.9979 104 Position A on Detector B 103830.69 [96,108]] 142.37 +/- 0.6403 0.1371
Ba133_DetA_Farthest_DetB_posN_Efficiency.root Ba-133 302.85 372 Position N on Detector B 57882.874 [360,385] 2.68 +/- 0.07947 0.0046
Ba133_DetA_Pos90_DetB_23_6cm_Efficiency.root Ba-133 302.85 372 23.6cm From Detector B 57882.874 [360,385] 35.55 +/- 0.4194 0.0614
Ba133_DetA_Pos70_DetB_PosD_Efficiency.root Ba-133 302.85 372 Position D on Detector B 57882.874 [360,385] 10.52 +/- 0.2420 0.01817
Ba133_DetA_Pos50_DetB_PosC_Efficiency.root Ba-133 302.85 372 Position C on Detector B 57882.874 [360,385]] 12.70 +/- 0.3036 0.0219
Ba133_DetA_Pos44cm_DetB_PosA_Efficiency.root Ba-133 302.85 372 Position A on Detector B 57882.874 [360,385] 19.30 +/- 0.4461 0.0333
Ba133_DetA_Farthest_DetB_posN_Efficiency.root Ba-133 356.0129 437 Position N on Detector B 195836.005 [400,460] 7.54 +/- 0.1260 0.0005
Ba133_DetA_Pos90_DetB_23_6cm_Efficiency.root Ba-133 356.0129 437 23.6cm From Detector B 195836.005 [400,460] 98.54 +/- 0.7217 0.0503
Ba133_DetA_Pos70_DetB_PosD_Efficiency.root Ba-133 356.0129 437 Position D on Detector B 195836.005 [400,460] 28.45 +/- 0.4035 0.0145
Ba133_DetA_Pos50_DetB_PosC_Efficiency.root Ba-133 356.0129 437 Position C on Detector B 195836.005 [400,460] 34.6716 +/- 0.5027 0.0177
Ba133_DetA_Pos44cm_DetB_PosA_Efficiency.root Ba-133 356.0129 437 Position A on Detector B 195836.005 [400,460] 53.1100 +/- 0.7534 0.0271
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