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

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Revision as of 23:32, 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 236 300
2 Detector on BorAl at +1250V 255 Yes 263 60
3 Detector on BorAl at +1250V 255 Yes 251 60
4 Detector on BorAl at +1250V 255 Yes 203 60
5 Detector on BorAl at +1250V 255 Yes 218 60

Source In with Thermalizer

Thermalizer, no borated poly, & 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 300
2 Detector on BorAl at +1250V 255 Yes 60
3 Detector on BorAl at +1250V 255 Yes 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 154 300
2 Detector on poly at +1250V 255 Yes 163 300
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

Green Poly with Thermalizer

1" Green poly, with 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) with 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) with 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) with 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) with 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) with 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

Go Back

CH He3 Attenuation Measurements

PAS Experiment Attenuation Measurements

PAS_He3_Detector

PAS_Experiment

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