Difference between revisions of "CH He3 Attenuation Measurements: 3 Different Cf252 Sources"

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|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 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 ||  || 100 ||  ||  
+
|  1  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  2  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  2  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  3  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  3  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  4  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  4  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  5  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  5  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
 
|}
 
|}
Line 139: Line 139:
 
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 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 ||  || 100 ||  ||  
+
|  1  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  2  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  2  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  3  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  3  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  4  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  4  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  5  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  5  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
 
|}
 
|}
Line 159: Line 159:
 
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 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 ||  || 100 ||  ||  
+
|  1  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  2  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  2  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  3  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  3  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  4  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  4  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  5  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  5  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
 
|}
 
|}
Line 179: Line 179:
 
|  Run Number || Configuration || Discriminator Threshold (mV) || Cf-252 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 ||  || 100 ||  ||  
+
|  1  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  2  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  2  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  3  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  3  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  4  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  4  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
−
|  5  || Detector on poly at +1250V || 255 || Yes ||  || 100 ||  ||  
+
|  5  || Detector on poly at +1250V || 80 || Yes ||  || 10 ||  ||  
 
|-
 
|-
 
|}
 
|}

Revision as of 16:44, 28 April 2022

Attenuation Experiment using New Modules in Electronics Chain and Inside Borated Poly Box

Electronics Chain (Poly Box)

Include schematic of electronics chain

Components

Each component of electronics chain with make/model, function, and brief description of why it's present

Ortec 142PC Pre-amp

Pre-amp for the He3 tube

CAEN Quad Linear Fan In - Fan Out Model N25 Tag #15687

  • The fan in/out is used to duplicate the pulse to run the spec amp and watch the signal on the scope for any anomalies.
  • The fan in/out is also used to invert the signal from the spec amp to send a negative pulse to the discriminator to trigger the scalar.

Ortec Spec Amp Model 672

  • 10x Course Gain
  • 1x Fine Gain
  • 0.5us Shaping Time
  • Uni Shaping: Gaussian
  • Input: Norm (+)
  • Output: Unipolar
  • Manual Pole Zero adjustment

LeCroy Discriminator Model 821 Serial #B16303

  • Variable threshold
  • Pulse width as measured on scope: ~43ns

Scope Images

Plateau Measurements

1250V Plateau Measurements
Run Number Configuration Discriminator Threshold (mV) Cf-252 Source Counts Run Time (Sec) Count Rate (Hz) Uncertainty
1 Detector on poly blocks at +1250V 30 Yes 100
2 Detector on poly blocks at +1250V 40 Yes 100
3 Detector on poly blocks at +1250V 50 Yes 100
4 Detector on poly blocks at +1250V 60 Yes 100
5 Detector on poly blocks at +1250V 70 Yes 100
6 Detector on poly blocks at +1250V 80 Yes 100
7 Detector on poly blocks at +1250V 90 Yes 100
8 Detector on poly blocks at +1250V 100 Yes 100

Background Measurements

1250V Background Measurements
Run Number Configuration Discriminator Threshold (mV) Cf-252 Source Counts Run Time (Sec) Count Rate (Hz) Uncertainty
1 Detector on 3D printed stands at +1250V 255 No 100
2 Detector on 3D printed stands at +1250V 255 No 100
3 Detector on 3D printed stands at +1250V 255 No 100
4 Detector on 3D printed stands at +1250V 255 No 100
5 Detector on 3D printed stands at +1250V 255 No 100

Poly Box Attenuation Measurements

Open Source

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 80 Yes 10
2 Detector on poly at +1250V 80 Yes 10
3 Detector on poly at +1250V 80 Yes 10
4 Detector on poly at +1250V 80 Yes 10
5 Detector on poly at +1250V 80 Yes 10

2" Green poly (one brick) in Box

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 80 Yes 10
2 Detector on poly at +1250V 80 Yes 10
3 Detector on poly at +1250V 80 Yes 10
4 Detector on poly at +1250V 80 Yes 10
5 Detector on poly at +1250V 80 Yes 10

4" Green poly (two bricks) in Box

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 80 Yes 10
2 Detector on poly at +1250V 80 Yes 10
3 Detector on poly at +1250V 80 Yes 10
4 Detector on poly at +1250V 80 Yes 10
5 Detector on poly at +1250V 80 Yes 10

6" Green poly (three bricks) in Box

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 80 Yes 10
2 Detector on poly at +1250V 80 Yes 10
3 Detector on poly at +1250V 80 Yes 10
4 Detector on poly at +1250V 80 Yes 10
5 Detector on poly at +1250V 80 Yes 10

8" Green poly (four bricks) in Box

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 80 Yes 10
2 Detector on poly at +1250V 80 Yes 10
3 Detector on poly at +1250V 80 Yes 10
4 Detector on poly at +1250V 80 Yes 10
5 Detector on poly at +1250V 80 Yes 10


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CaGaS Phase II

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