NAA SolarPanel

PAA_Research

SOlarPanel A Irradiation on Jack

Irradiated on Jack by placing samples just above the Radiator as shown in the picture.

Beam parameters: Irradiation Date : 5/23/18

Start Time: 09:07:30

Stop Time: 11:07:30

[math]T_{Irradiation} = 120 min [/math]

Rep Rate=300 Hz

I = 98 mA

Pulse Width = 10 usec

E = 38 MeV

The solar panel current output dropped 1 mA per hour during irradiation. The cove was too dark to produce a signal from ambient light. The observed signal was completely due to the electron beam.

In File name:10uC_Cs_Mn_SolarPan_DetD_55.5cm_002.lst

Measurements started at 14:45:38, 2:38:08 (158 min, 9488 sec) after irradiation ended,

Add 9488 seconds to time below to get time since irradiation

Time (sec)	Sample
0	Cs-137 (661 keV line) #64121 55.5 cm away from face
360	Mn sample (1.7 g, 1.5 cm x 1.5 cm square, 847 keV) 55.5 cm away from face
690	Thorium Rods on face of detector
1020	Solar Panel A 55.5 cm away from face
1410	Cs-137 #129792 55.5 cm away from face
1820	Mn sample (847 keV) 55.5 cm away from face
2230	Cs-137 #129792 55.5 cm away from face (0.54% deadtime)
2560	Solar Panel A 55.5 cm away from face (0.55% deadtime, 300 Hz DAQ rate)
2880	Cs-137 (661 keV line) #64121 55.5 cm away from face (1.1% deadtime, 350 Hz)
3070	Mn sample (847 keV) 55.5 cm away from face (13 % deadtime, 4600 Hz)
3330	Ignore (Mn source was too close) Cs-137 #129792 15 cm away from face(6 % deadtime, 2000 Hz)
3600	Cs-137 #129792 15 cm away from face(.5 % deadtime, 200 Hz)
4000	Solar Panel A 15 cm away from face (2 % deadtime, 880 Hz DAQ rate)

Check out Solar panel channels

root [24] MPA->Draw("evt.Chan>>(496,0,496)","evt.Sec> 2560 && evt.Sec<2800 && evt.Chan >306 && evt.Chan < 311");

root [25] MPA->Draw("evt.Chan>>(496,0,496)","evt.Sec> 1020 && evt.Sec<1260 && evt.Chan >306 && evt.Chan < 311");

Calibration

Source	Energy (keV0	Channel
Th Rod	238.8 (highest peak)	487.2 +/- 1.1
Th Rod	338.8 (4th highest)	690.4 +/- 1.3
Th Rod	511
Th Rod	583.4 (2nd highest peak)	1189.6 + / 1.2
Cs-137	661.7	1350
Th Rod	911.2 (3rd highest)	1858.3 +/- 1.4
Th Rod	2614.6	5331.0 +/- 2.2

Energy (keV) = (0.065 +/- 1.34) + Channel*(0.490287 +/- 0.001174)

MPA->Draw("evt.Chan*(0.490) >>(6096,0,6096)","evt.Sec > 690 && evt.Sec < 1000");

Solar Panel Lines of interest

491, 528, 552.5, 847 , 1097 , 1293, 1303, 1810, 1997

In File name:10uC_Cs_Mn_SolarPan_DetD_55.5cm_003.lst

The measurement below started at 16:24:09, 4:16:39 after irradiation ended

Add 15399 seconds to time below to get time since irradiation

Time (sec)	Sample
0	Thorium Rods on face of detector (2% deadtime, 750 Hz)
350	Mn sample (847 keV) 55.5 cm away from face (12% deadtime, 3800 Hz)

Ended measurements at (;34 am Thursday, 5/24/18

PAA_Research