Difference between revisions of "Cf252 NaI detector test. 12 Apr 2012"
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Calibration 1.4 MeV/575 cnls = 0.00243 MeV/cnl | Calibration 1.4 MeV/575 cnls = 0.00243 MeV/cnl | ||
|- | |- | ||
| − | |2778||bkgd||all around 2" Pb around|| || | + | |2778||bkgd||2" Pb around, no front shielding || ||41.75 Hz || |
| + | |- | ||
| + | |2779||bkgd||all around 2" Pb around|| ||15.74 Hz || good area around 2000-3800 channels | ||
|} | |} | ||
Revision as of 18:09, 12 April 2012
NaI detector, -1030V, 300 mV threshold on gate channel, signal ADC4
| Run # | source | shielding | cnts | rate | Comments |
|---|---|---|---|---|---|
| 2775 | Co-60 some distance away from NaI | 2" Pb around, no front shielding | |||
| 2776 | bkgd | 2" Pb around, no front shielding | |||
| 2777 | Co-60 on NaI taped | 2" Pb around, no front shielding | clear 2 big 1.2 and 1.4 MeV peaks, small peak around 4.3 MeV
Calibration 1.4 MeV/575 cnls = 0.00243 MeV/cnl | ||
| 2778 | bkgd | 2" Pb around, no front shielding | 41.75 Hz | ||
| 2779 | bkgd | all around 2" Pb around | 15.74 Hz | good area around 2000-3800 channels
|