NAA SolarPanel

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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

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