Difference between revisions of "CH He3 Attenuation Measurements Revisited"

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|  1  || Detector on 3D printed stands at +1250V || 255 || Yes || || 100 ||  ||  
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Revision as of 18:28, 24 February 2022

Experimental Setup

Detector is mounted on 3D printed stands located at each end of the 20" He3 tube

The stands are ABS plastic

The entire setup is on top of BorAl plating placed on top of a plywood workbench

Front face of poly structure is 9.5" to closest part of detector tube

Polyethylene Structure

This section to include type of poly, location, source-detector distance, images, etc

Detector

Include images, model/serial number of detector, physical parameters, etc

He3 Tube Plateau

Measurements

1250V Source Out Data
Run Number Configuration Discriminator Threshold (mV) Cf-252 Source Counts Run Time (Sec) Count Rate (Hz)
1 Detector on 3D printed stands at +1250V 125 No 100
2 Detector on 3D printed stands at +1250V 145 No 100
3 Detector on 3D printed stands at +1250V 155 No 100
4 Detector on 3D printed stands at +1250V 160 No 100
5 Detector on 3D printed stands at +1250V 165 No 100
6 Detector on 3D printed stands at +1250V 170 No 100
7 Detector on 3D printed stands at +1250V 175 No 100
8 Detector on 3D printed stands at +1250V 185 No 100
9 Detector on 3D printed stands at +1250V 205 No 100
10 Detector on 3D printed stands at +1250V 225 No 100
11 Detector on 3D printed stands at +1250V 245 No 100
12 Detector on 3D printed stands at +1250V 255 No 100
1250V Source In Data
Run Number Configuration Discriminator Threshold (mV) Cf-252 Source Counts Run Time (Sec) Count Rate (Hz)
1 Detector on 3D printed stands at +1250V 125 Yes 100
2 Detector on 3D printed stands at +1250V 145 Yes 100
3 Detector on 3D printed stands at +1250V 155 Yes 100
4 Detector on 3D printed stands at +1250V 160 Yes 100
5 Detector on 3D printed stands at +1250V 165 Yes 100
6 Detector on 3D printed stands at +1250V 170 Yes 100
7 Detector on 3D printed stands at +1250V 175 Yes 100
8 Detector on 3D printed stands at +1250V 185 Yes 100
9 Detector on 3D printed stands at +1250V 205 Yes 100
10 Detector on 3D printed stands at +1250V 225 Yes 100
11 Detector on 3D printed stands at +1250V 245 Yes 100
12 Detector on 3D printed stands at +1250V 255 Yes 100
Plateau Plots
Plateau measurements at 700V, source in and source out overlaid.
Plateau measurements at 700V, source in minus source out.
Signal to Noise ratio for 700V at different discriminator voltages

Repeat of Initial Experimental Setup #1

Experimental Setup

Polyethylene Structure

This section to include type of poly, location, source-detector distance, images, etc

Detector

Include images, model/serial number of detector, physical parameters, etc

Electronics Chain

Include schematic of electronics chain

Components

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

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

  • The fan in/out is used to duplicate the pulse to run multiple discriminators & timers concurrently

CAEN Discriminator Model N841 Tag #113

  • 255mV threshold
  • Pulse width as measured on scope: 43ns

Ortec Spec Amp Model 672

  • 10x Course Gain
  • 1x Fine Gain
  • 2us Shaping Time
  • Uni Shaping: Gaussian
  • Input: Norm (-)
  • Output: Unipolar

CAEN Dual Timer Model N93B Tag #1761

  • Discriminator output used to start timer
  • Timer output used to trigger scalar
  • Pulse width as measured on scope: 100ns

Scope Images

Background Measurements

2/24/22 ~8:45am

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 32 100
2 Detector on 3D printed stands at +1250V 255 No 33 100
3 Detector on 3D printed stands at +1250V 255 No 25 100
4 Detector on 3D printed stands at +1250V 255 No 100
5 Detector on 3D printed stands at +1250V 255 No 100

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 3D printed stands at +1250V 255 Yes 2621 100
2 Detector on 3D printed stands at +1250V 255 Yes 2582 100
3 Detector on 3D printed stands at +1250V 255 Yes 2497 100
4 Detector on 3D printed stands at +1250V 255 Yes 2605 100
5 Detector on 3D printed stands at +1250V 255 Yes 2522 100

1" Green poly

1250V source in
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 Yes 368 100
2 Detector on 3D printed stands at +1250V 255 Yes 410 100
3 Detector on 3D printed stands at +1250V 255 Yes 406 100
4 Detector on 3D printed stands at +1250V 255 Yes 412 100
5 Detector on 3D printed stands at +1250V 255 Yes 412 100

2" Green poly (one brick)

1250V source in
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 Yes 430 100
2 Detector on 3D printed stands at +1250V 255 Yes 431 100
3 Detector on 3D printed stands at +1250V 255 Yes 407 100
4 Detector on 3D printed stands at +1250V 255 Yes 417 100
5 Detector on 3D printed stands at +1250V 255 Yes 411 100

3" Green poly (one brick & sheet)

1250V source in
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 Yes 100
2 Detector on 3D printed stands at +1250V 255 Yes 100
3 Detector on 3D printed stands at +1250V 255 Yes 100
4 Detector on 3D printed stands at +1250V 255 Yes 100
5 Detector on 3D printed stands at +1250V 255 Yes 100

4" Green poly (two bricks)

1250V source in
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 Yes 100
2 Detector on 3D printed stands at +1250V 255 Yes 100
3 Detector on 3D printed stands at +1250V 255 Yes 100
4 Detector on 3D printed stands at +1250V 255 Yes 100
5 Detector on 3D printed stands at +1250V 255 Yes 100

6" Green poly (three bricks)

1250V source in
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 Yes 100
2 Detector on 3D printed stands at +1250V 255 Yes 100
3 Detector on 3D printed stands at +1250V 255 Yes 100
4 Detector on 3D printed stands at +1250V 255 Yes 100
5 Detector on 3D printed stands at +1250V 255 Yes 100

8" Green poly (four bricks)

1250V source in
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 Yes 100
2 Detector on 3D printed stands at +1250V 255 Yes 100
3 Detector on 3D printed stands at +1250V 255 Yes 100
4 Detector on 3D printed stands at +1250V 255 Yes 100
5 Detector on 3D printed stands at +1250V 255 Yes 100

Repeat of Initial Experimental Setup #2

Experimental Setup

Polyethylene Structure

This section to include type of poly, location, source-detector distance, images, etc

Detector

Include images, model/serial number of detector, physical parameters, etc

Electronics Chain

Include schematic of electronics chain

Components

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

CAEN Discriminator Model N841 Tag #115

  • 255mV threshold
  • Pulse width as measured on scope:

Ortec Spec Amp Model 672

  • 10x Course Gain
  • 1x Fine Gain
  • 2us Shaping Time
  • Uni Shaping: Gaussian
  • Input: Norm (-)
  • Output: Unipolar

Dual Timer

  • Discriminator output used to start timer
  • Timer output used to trigger scalar
  • Pulse width as measured on scope: 100ns

Scope Images

Background Measurements

2/24/22 ~7:30am

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

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 3D printed stands at +1250V 255 Yes 100
2 Detector on 3D printed stands at +1250V 255 Yes 100
3 Detector on 3D printed stands at +1250V 255 Yes 100
4 Detector on 3D printed stands at +1250V 255 Yes 100
5 Detector on 3D printed stands at +1250V 255 Yes 100

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 3D printed stands at +1250V 255 Yes 100
2 Detector on 3D printed stands at +1250V 255 Yes 100
3 Detector on 3D printed stands at +1250V 255 Yes 100
4 Detector on 3D printed stands at +1250V 255 Yes 100
5 Detector on 3D printed stands at +1250V 255 Yes 100

3" Green poly (one brick & sheet)

1250V source in
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 Yes 100
2 Detector on 3D printed stands at +1250V 255 Yes 100
3 Detector on 3D printed stands at +1250V 255 Yes 100
4 Detector on 3D printed stands at +1250V 255 Yes 100
5 Detector on 3D printed stands at +1250V 255 Yes 100

4" Green poly (two bricks)

1250V source in
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 Yes 100
2 Detector on 3D printed stands at +1250V 255 Yes 100
3 Detector on 3D printed stands at +1250V 255 Yes 100
4 Detector on 3D printed stands at +1250V 255 Yes 100
5 Detector on 3D printed stands at +1250V 255 Yes 100

6" Green poly (three bricks)

1250V source in
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 Yes 100
2 Detector on 3D printed stands at +1250V 255 Yes 100
3 Detector on 3D printed stands at +1250V 255 Yes 100
4 Detector on 3D printed stands at +1250V 255 Yes 100
5 Detector on 3D printed stands at +1250V 255 Yes 100

8" Green poly (four bricks)

1250V source in
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 Yes 100
2 Detector on 3D printed stands at +1250V 255 Yes 100
3 Detector on 3D printed stands at +1250V 255 Yes 100
4 Detector on 3D printed stands at +1250V 255 Yes 100
5 Detector on 3D printed stands at +1250V 255 Yes 100

Attenuation Experiment using HPGe Lynx System as PSU/DAQ

Experimental Setup

Polyethylene Structure

This section to include type of poly, location, source-detector distance, images, etc

Detector

Include images, model/serial number of detector, physical parameters, etc

Electronics Chain

Include schematic of electronics chain

Components

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

Measurements

Attenuation Experiment using New Modules in Electronics Chain

Electronics Chain

Include schematic of electronics chain

Components

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

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

  • The fan in/out is used to duplicate the pulse to run multiple discriminators & timers concurrently

Lecroy Discriminator Model 821 Serial #B16303

  • 255mV threshold
  • Pulse width as measured on scope: 43ns

Ortec Spec Amp Model 672

  • 10x Course Gain
  • 1x Fine Gain
  • 2us Shaping Time
  • Uni Shaping: Gaussian
  • Input: Norm (-)
  • Output: Unipolar

CAEN Dual Timer Model N93B Tag #1572

  • Discriminator output used to start timer
  • Timer output used to trigger scalar
  • Pulse width as measured on scope: 100ns

Scope Images

  • Purple: CAEN Dual Timer using Lecroy Disc as input. 100ns pulse width. Aqua: Lecroy Disc Output. 20ns pulse width.

  • Purple: CAEN Dual Timer using Lecroy Disc as input. 100ns pulse width. Aqua: Lecroy Disc Output. 20ns pulse width. Lime:: Ortec Spec Amp 672 output.

Background Measurements

2/23/22 ~4pm

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 63 100
2 Detector on 3D printed stands at +1250V 255 No 52 100
3 Detector on 3D printed stands at +1250V 255 No 65 100
4 Detector on 3D printed stands at +1250V 255 No 53 100
5 Detector on 3D printed stands at +1250V 255 No 70 100

2/24/22 ~7:30am

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 59 100
2 Detector on 3D printed stands at +1250V 255 No 41 100
3 Detector on 3D printed stands at +1250V 255 No 57 100
4 Detector on 3D printed stands at +1250V 255 No 56 100
5 Detector on 3D printed stands at +1250V 255 No 55 100

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 3D printed stands at +1250V 255 Yes 2456 100
2 Detector on 3D printed stands at +1250V 255 Yes 2399 100
3 Detector on 3D printed stands at +1250V 255 Yes 2329 100
4 Detector on 3D printed stands at +1250V 255 Yes 2459 100
5 Detector on 3D printed stands at +1250V 255 Yes 2358 100

1" Green poly

1250V source in
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 Yes 339 100
2 Detector on 3D printed stands at +1250V 255 Yes 381 100
3 Detector on 3D printed stands at +1250V 255 Yes 375 100
4 Detector on 3D printed stands at +1250V 255 Yes 376 100
5 Detector on 3D printed stands at +1250V 255 Yes 374 100

2" Green poly (one brick)

1250V source in
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 Yes 388 100
2 Detector on 3D printed stands at +1250V 255 Yes 403 100
3 Detector on 3D printed stands at +1250V 255 Yes 382 100
4 Detector on 3D printed stands at +1250V 255 Yes 387 100
5 Detector on 3D printed stands at +1250V 255 Yes 391 100

3" Green poly (one brick & sheet)

1250V source in
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 Yes 243 100
2 Detector on 3D printed stands at +1250V 255 Yes 239 100
3 Detector on 3D printed stands at +1250V 255 Yes 251 100
4 Detector on 3D printed stands at +1250V 255 Yes 230 100
5 Detector on 3D printed stands at +1250V 255 Yes 236 100

4" Green poly (two bricks)

1250V source in
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 Yes 100
2 Detector on 3D printed stands at +1250V 255 Yes 100
3 Detector on 3D printed stands at +1250V 255 Yes 100
4 Detector on 3D printed stands at +1250V 255 Yes 100
5 Detector on 3D printed stands at +1250V 255 Yes 100

6" Green poly (three bricks)

1250V source in
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 Yes 100
2 Detector on 3D printed stands at +1250V 255 Yes 100
3 Detector on 3D printed stands at +1250V 255 Yes 100
4 Detector on 3D printed stands at +1250V 255 Yes 100
5 Detector on 3D printed stands at +1250V 255 Yes 100

8" Green poly (four bricks)

1250V source in
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 Yes 100
2 Detector on 3D printed stands at +1250V 255 Yes 100
3 Detector on 3D printed stands at +1250V 255 Yes 100
4 Detector on 3D printed stands at +1250V 255 Yes 100
5 Detector on 3D printed stands at +1250V 255 Yes 100


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