Cf252 NaI detector test. 12 Apr 2012

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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, Pb infront 41.75 Hz