10312013 TestRun

Goals

Use NaI to measure Y-88 coincidence lines of 1836 and 898 keV

Runlist

Run	Description
6559	Coincidence run with Na-22 1 uCi source # 129742, ADC7 = HpGe, ADC3 = NaI, TDC16 = HpGe, TDC19 = NaI, Na-22's 1.2 keV photon is in channel 3600 for the HpGe detector and channel 500 for the NaI; need to decrease gain on HpGe so Y-88's 1.8 keV photon is in the ADC range
6560	Changed HpGe spec amp integration from 0.5 usec shaping time to 0.25 and ran in singles mode
6561	Running in coincidence mode, rate changed from about 70 Hz to about 2 Hz
6562	Running in OR mode with activated Y-88 sample #130100-010
6575	same conditions as run 6571 but with activated Y-88 sample #130100-010

Calibration

calibrate with Na-22 (511,1200), Co-60 (1.2, 1.3), Mn-54 (), Cs-137 (662 keV)

Calibration runs

Cd=109 has coincidence lines at 203 & 250 keV

Run	Description
6567	Singles run with only NaI detector and Co-60 source
6568	singles runs with only HpGe detector and Co-60 source
6569	OR mode, both detectors, 3k DAQ trigger rate. Co-60 1 uCi source # 129739
6570	Running in OR mode with Mn-54 source # 129806 700 Hz
6571	Running in OR mode with only NaI in trigger and Mn-54 source, increased threshold from 10 mV to 40 mV to count more high energy photons
6572	same as run 6571 but using Na-22 1 uCi source # 129742
6573	same as run 6571 but using Co-60 1 uCi source # 129739
6574	same as run 6571 but using and used Cs-137 1 uCi source #129793

Source	Energy	HpGe ch # (ADC 7)	NaI ch # (ADC3)
Na-22	511	821.76 +/- 2.6	567.735 +/- 19.9
Cs-137	661.657	1025.7 +/- 2.1	707.185 +/- 20.5
Mn-54	834.848	1260.46 +/- 2.1	866.607 +/- 21.9
Co-60	1173.228	1719.56 +/- 2.4	1173.85 +/- 35
Na-22	1274.537	1856.88 +/- 2.2	1265.59 +/- 36
Co-60	1332.492	1935.41 +/- 2.4	1318.99 +/- 34

HpGe Fit

A=-94.978 +/- 0.719711 B=0.737543 +/- 0.000480387

3rd order

-95.4193 +- 3.43312 0.73824 +- 0.0053233 -2.49548e-07 +- 1.89781e-06

PAA_CoincidenceCounting#NaI_.26_HpGe_Coinc