Difference between revisions of "CH PAS He3 BorAl Attenuation Study"

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Line 63: Line 63:
 
| '''1250V source in'''||
 
| '''1250V source in'''||
 
|-
 
|-
−
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 Button Source || Counts || Run Time (Sec) || Count Rate (Hz) || Uncertainty
+
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 Source || Counts || Run Time (Sec) || Count Rate (Hz) || Uncertainty
 
|-
 
|-
 
|  1  || Detector on poly at +1250V || 255 || Yes ||  || 300 ||  ||  
 
|  1  || Detector on poly at +1250V || 255 || Yes ||  || 300 ||  ||  
Line 83: Line 83:
 
| '''1250V source in'''||
 
| '''1250V source in'''||
 
|-
 
|-
−
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 Button Source || Counts || Run Time (Sec) || Count Rate (Hz) || Uncertainty
+
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 Source || Counts || Run Time (Sec) || Count Rate (Hz) || Uncertainty
 
|-
 
|-
−
|  1  || Detector on poly at +1250V || 255 || Yes || 2176 || 300 || 7.25 || 0.155
+
|  1  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  2  || Detector on poly at +1250V || 255 || Yes || 2070 || 300 || 6.90 || 0.152
+
|  2  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  3  || Detector on poly at +1250V || 255 || Yes || 2055 || 300 || 6.85 || 0.151
+
|  3  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  4  || Detector on poly at +1250V || 255 || Yes || 2131 || 300 || 7.10 || 0.154
+
|  4  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  5  || Detector on poly at +1250V || 255 || Yes || 1957 || 300 || 6.52 || 0.147
+
|  5  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
 
|}
 
|}
Line 103: Line 103:
 
| '''1250V source in'''||
 
| '''1250V source in'''||
 
|-
 
|-
−
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 Button Source || Counts || Run Time (Sec) || Count Rate (Hz) || Uncertainty
+
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 Source || Counts || Run Time (Sec) || Count Rate (Hz) || Uncertainty
 
|-
 
|-
−
|  1  || Detector on poly at +1250V || 255 || Yes || 1345 || 300 || 4.48 || 0.122
+
|  1  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  2  || Detector on poly at +1250V || 255 || Yes || 1335 || 300 || 4.45 || 0.122
+
|  2  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  3  || Detector on poly at +1250V || 255 || Yes || 1295 || 300 || 4.32 || 0.120
+
|  3  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  4  || Detector on poly at +1250V || 255 || Yes || 1384 || 300 || 4.61 || 0.124
+
|  4  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  5  || Detector on poly at +1250V || 255 || Yes || 1297 || 300 || 4.32 || 0.120
+
|  5  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
 
|}
 
|}
Line 123: Line 123:
 
| '''1250V source in'''||
 
| '''1250V source in'''||
 
|-
 
|-
−
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 Button Source || Counts || Run Time (Sec) || Count Rate (Hz) || Uncertainty
+
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 Source || Counts || Run Time (Sec) || Count Rate (Hz) || Uncertainty
 
|-
 
|-
−
|  1  || Detector on poly at +1250V || 255 || Yes || 1056 || 300 || 3.52 || 0.108
+
|  1  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  2  || Detector on poly at +1250V || 255 || Yes || 1085 || 300 || 3.62 || 0.110
+
|  2  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  3  || Detector on poly at +1250V || 255 || Yes || 1151 || 300 || 3.84 || 0.113
+
|  3  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  4  || Detector on poly at +1250V || 255 || Yes || 1064 || 300 || 3.55 || 0.109
+
|  4  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  5  || Detector on poly at +1250V || 255 || Yes || 1059 || 300 || 3.53 || 0.108
+
|  5  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
 
|}
 
|}
Line 143: Line 143:
 
| '''1250V source in'''||
 
| '''1250V source in'''||
 
|-
 
|-
−
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 Button Source || Counts || Run Time (Sec) || Count Rate (Hz) || Uncertainty
+
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 Source || Counts || Run Time (Sec) || Count Rate (Hz) || Uncertainty
 
|-
 
|-
−
|  1  || Detector on poly at +1250V || 255 || Yes || 728 || 300 || 2.43 || 0.090
+
|  1  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  2  || Detector on poly at +1250V || 255 || Yes || 737 || 300 || 2.46 || 0.090
+
|  2  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  3  || Detector on poly at +1250V || 255 || Yes || 759 || 300 || 2.53 || 0.092
+
|  3  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  4  || Detector on poly at +1250V || 255 || Yes || 717 || 300 || 2.39 || 0.089
+
|  4  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  5  || Detector on poly at +1250V || 255 || Yes || 764 || 300 || 2.55 || 0.092
+
|  5  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
 
|}
 
|}
Line 163: Line 163:
 
| '''1250V source in'''||
 
| '''1250V source in'''||
 
|-
 
|-
−
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 Button Source || Counts || Run Time (Sec) || Count Rate (Hz) || Uncertainty
+
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 Source || Counts || Run Time (Sec) || Count Rate (Hz) || Uncertainty
 
|-
 
|-
−
|  1  || Detector on poly at +1250V || 255 || Yes || 612 || 300 || 2.04 || 0.082
+
|  1  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  2  || Detector on poly at +1250V || 255 || Yes || 606 || 300 || 2.02 || 0.082
+
|  2  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  3  || Detector on poly at +1250V || 255 || Yes || 582 || 300 || 1.94 || 0.080
+
|  3  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  4  || Detector on poly at +1250V || 255 || Yes || 606 || 300 || 2.04 || 0.082
+
|  4  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
−
|  5  || Detector on poly at +1250V || 255 || Yes || 597 || 300 || 1.99 || 0.081
+
|  5  || Detector on poly at +1250V || 255 || Yes || || 300 || ||  
 
|-
 
|-
 
|}
 
|}

Revision as of 22:44, 25 June 2021

Experimental Setup

Attenuation Measurements Setup
Poly box to contain Cf-252 source for attenuation measurements
 [[File:|400px|thumb|none|He3 tube mounting for attenuation measurements ]] [[File: |300px|thumb|none| ]]
[[File:|300px|thumb|none| ]]
Top down view of Cf-252 source in place, ready to be covered by top sheet of virgin poly
 [[File: |300px|thumb|none| ]]

Measurements

Background Measurements

1250V Source Out Data
Run Number Configuration Discriminator Threshold (mV) Cf-252 Button Source Counts Run Time (Sec) Count Rate (Hz) Uncertainty
1 Detector on BorAl at +1250V 255 No 60
2 Detector on BorAl at +1250V 255 No 60
3 Detector on BorAl at +1250V 255 No 60
4 Detector on BorAl at +1250V 255 No 60
5 Detector on BorAl at +1250V 255 No 60

Source In

No thermalizer, no borated poly, just BorAl shielding around detector

1250V Source In Data
Run Number Configuration Discriminator Threshold (mV) Cf-252 Source Counts Run Time (Sec) Count Rate (Hz) Uncertainty
1 Detector on BorAl at +1250V 255 Yes 231 300
2 Detector on BorAl at +1250V 255 Yes 220 60
3 Detector on BorAl at +1250V 255 Yes 199 60
4 Detector on BorAl at +1250V 255 Yes 60
5 Detector on BorAl at +1250V 255 Yes 60

Green Poly without Thermalizer

1" Green poly, no thermalizer

1250V source in
Run Number Configuration Discriminator Threshold (mV) Cf-252 Source Counts Run Time (Sec) Count Rate (Hz) Uncertainty
1 Detector on poly at +1250V 255 Yes 300
2 Detector on poly at +1250V 255 Yes 300
3 Detector on poly at +1250V 255 Yes 300
4 Detector on poly at +1250V 255 Yes 300
5 Detector on poly at +1250V 255 Yes 300

2" Green poly (one brick) no thermalizer

1250V source in
Run Number Configuration Discriminator Threshold (mV) Cf-252 Source Counts Run Time (Sec) Count Rate (Hz) Uncertainty
1 Detector on poly at +1250V 255 Yes 300
2 Detector on poly at +1250V 255 Yes 300
3 Detector on poly at +1250V 255 Yes 300
4 Detector on poly at +1250V 255 Yes 300
5 Detector on poly at +1250V 255 Yes 300

3" Green poly (one brick & sheet) no thermalizer

1250V source in
Run Number Configuration Discriminator Threshold (mV) Cf-252 Source Counts Run Time (Sec) Count Rate (Hz) Uncertainty
1 Detector on poly at +1250V 255 Yes 300
2 Detector on poly at +1250V 255 Yes 300
3 Detector on poly at +1250V 255 Yes 300
4 Detector on poly at +1250V 255 Yes 300
5 Detector on poly at +1250V 255 Yes 300

4" Green poly (two bricks) no thermalizer

1250V source in
Run Number Configuration Discriminator Threshold (mV) Cf-252 Source Counts Run Time (Sec) Count Rate (Hz) Uncertainty
1 Detector on poly at +1250V 255 Yes 300
2 Detector on poly at +1250V 255 Yes 300
3 Detector on poly at +1250V 255 Yes 300
4 Detector on poly at +1250V 255 Yes 300
5 Detector on poly at +1250V 255 Yes 300

6" Green poly (three bricks) no thermalizer

1250V source in
Run Number Configuration Discriminator Threshold (mV) Cf-252 Source Counts Run Time (Sec) Count Rate (Hz) Uncertainty
1 Detector on poly at +1250V 255 Yes 300
2 Detector on poly at +1250V 255 Yes 300
3 Detector on poly at +1250V 255 Yes 300
4 Detector on poly at +1250V 255 Yes 300
5 Detector on poly at +1250V 255 Yes 300

8" Green poly (four bricks) no thermalizer

1250V source in
Run Number Configuration Discriminator Threshold (mV) Cf-252 Source Counts Run Time (Sec) Count Rate (Hz) Uncertainty
1 Detector on poly at +1250V 255 Yes 300
2 Detector on poly at +1250V 255 Yes 300
3 Detector on poly at +1250V 255 Yes 300
4 Detector on poly at +1250V 255 Yes 300
5 Detector on poly at +1250V 255 Yes 300












CH He3 Attenuation Measurements

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