Difference between revisions of "LB Calibration 2/12/17"
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PAA->Draw("PADC.PADC785N[3]/2-8 + 0.997955>>photons(2000,0,2000)","") | PAA->Draw("PADC.PADC785N[3]/2-8 + 0.997955>>photons(2000,0,2000)","") | ||
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Revision as of 13:26, 13 February 2017
Runlist
| Run Number | Isotope | Reference Date | Serial # | Activity | Egamma (keV) | Channel | Runtime (s) |
| r5892 | Na-22 | 07/15/13 | K4-899 | 10.19uCi | 511 | 510.2 +/- 2.41 | 258 |
| r5892 | Na-22 | 07/15/13 | K4-899 | 10.19uCi | 1274.537 | 1272 +/- 2.729 | 258 |
| r5893 | Eu-152 | 07/01/08 | 129754 | 10.97uCi | 1408.1 | 1406 +/- 2.859 | 361 |
| r5893 | Eu-152 | "" "" | "" "" | "" "" | 963.39 | 962 +/- 2.833 | 361 |
| r5893 | Eu-152 | "" "" | "" "" | "" "" | 778.9 | 777.3 +/- 2.851 | 361 |
| r5893 | Eu-152 | "" "" | "" "" | "" "" | 121.78 | 121.9 +/- 3.765 | 361 |
| r5894 | Ba-133 | 04/15/07 | 1235-74-3 | 9.821uCi | 80.9971 | 81.27 +/- 4.52 | 563 |
| r5894 | Ba-133 | "" "" | "" "" | "" "" | 276.3997 | 276.2 +/- 1.947 | 563 |
| r5894 | Ba-133 | "" "" | "" "" | "" "" | 302.8510 | 302.6 +/- 1.406 | 563 |
| r5894 | Ba-133 | "" "" | "" "" | "" "" | 356.0134 | 355.5+/-1.289 | 563 |
| r5894 | Ba-133 | "" "" | "" "" | "" "" | 383.8480 | 383.3 +/- 1.39 | 563 |
| r5895 | Cs-137 | 05/01/05 | S4121 | 9.067uCi | 661.657 | 660.1 +/- 1.576 | 325 |
root command line used: PAA->Draw("PADC.PADC785N[3]/2-8>>photons(2000,0,2000)","")
ROOT gives values for A = 0.322688 +/- 1.09 and B is 0.997955 +/- 0.0018. Here A has a very large error. Plotting the function only using B will give values that are roughly 0.3 keV away from the expected energy values.
So the calibrated command is
PAA->Draw("PADC.PADC785N[3]/2-8 + 0.997955>>photons(2000,0,2000)","")