CH HPGe Efficiency: Difference between revisions
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The calibration used to map from ADC channel number to KeV is: | The calibration used to map from ADC channel number to KeV is: | ||
<math>Photon Energy = -36.2928 + 0.449519 x - 0.000000861277 x^2</math> | <math>Photon\ Energy\ =\ -36.2928\ +\ 0.449519\ x\ -\ 0.000000861277\ x^2</math> | ||
Where ''x = channel 9'' of the ADC and is input as PADC.PADC785N[9]. | Where ''x = channel 9'' of the ADC and is input as PADC.PADC785N[9]. | ||
Revision as of 20:31, 28 September 2021
Eu152 Calibration
- HPGe calibrated using Eu152 source
As of 9/28/21
The calibration used to map from ADC channel number to KeV is:
[math]\displaystyle{ Photon\ Energy\ =\ -36.2928\ +\ 0.449519\ x\ -\ 0.000000861277\ x^2 }[/math]
Where x = channel 9 of the ADC and is input as PADC.PADC785N[9].
Total Efficiency
This is total efficiency using the Gadolinium foil as the source.
[math]\displaystyle{ (line\ intensity)\ (incident\ thermal\ neutrons\ per\ second)\ (\sigma_{total})\ (MCNP\ fudge\ factor\ from\ Paul\ ~4)\ =\ Theoretical\ Rate }[/math]
Then find detected rate using HPGe
Divide (detected rate) by (theoretical rate) for total detector efficiency