PAS Feasibility Preliminary Runs

From New IAC Wiki
Jump to navigation Jump to search

This experimental setup does not contain BorAl

General run plan

  • Run source in and source out in experimental setup and background subtract with NaI
  • Move the source to different locations along the source tunnel and plot the different distances and count rates
  • Run source in and source out in experimental setup and background subtract with He3
  • Move the source to different locations along the source tunnel and plot the different distances and count rates

I will upload some models of the setup when I have updated the model to include the source and detector

7/19/21

NaI detector 30cm from converter

NaI Detector, 5mV threshold, +1000V on detector, no converter

Source Distance (cm) Counts Run Time (s) Count Rate (Hz) Uncertainty
39.5 1563 100
35 1631 100
30 1791 100
25 2054 100
20 2514 100
15 3375 100
10 6182 100

NaI Detector, 5mV threshold, +1000V on detector, with converter

Source Distance (cm) Counts Run Time (s) Count Rate (Hz) Uncertainty
39.5 1489 100
35 1581 100
30 1729 100
25 1936 100
20 2401 100
15 3249 100
10 5969 100

NaI Detector, 2mV threshold, +1000V on detector, no converter

Source Distance (cm) Counts Run Time (s) Count Rate (Hz) Uncertainty
39.5 2039 100
35 2228 100
30 2546 100
25 2960 100
20 3939 100
15 5349 100
10 10050 100

NaI Detector, 2mV threshold, +1000V on detector, with converter

Source Distance (cm) Counts Run Time (s) Count Rate (Hz) Uncertainty
39.5 2071 100
35 2225 100
30 2430 100
25 2825 100
20 3391 100
15 4861 100
10 9576 100

7/20/21

detector is 5cm from converter (5cm from end of detector tunnel towards source)

He3 detector, 1250V, no converter, 250mV threshold

Source Distance (cm) Counts Run Time (s) Count Rate (Hz) Uncertainty
39.5 478 100
35 676 100
30 1010 100
25 1604 100
20 2533 100
15 4017 100
10 6035 100

He3 detector, 1250V, with converter, 250mV threshold

Source Distance (cm) Counts Run Time (s) Count Rate (Hz) Uncertainty
39.5 146 200
35 140 200
30 228 200
25 186 100
20 278 100
15 546 100
10 729 100

7/21/21

Source at 10cm inside source tunnel

Running with NaI and ADC setup.

ADC is not calibrated. Running converter in and converter out.

Will swap to He3 detector following these and overlay the source in source out plots from the root files.

I will put all this into a table later

  • NaI with converter: Run 7031 -> Red
  • run start: 13:01:51
  • run stop: 13:12:07
  • NaI without converter: Run 7033 -> Blue
  • Run 7032 failed 7 minutes in and was stopped by the computer
  • run start: 13:17:30
  • run stop: 13:27:27 or 13:37:27

He3 Runs

  • He3 no converter: Run 7034 -> Blue
  • run start: 15:46:25
  • run stop: 15:57:38
  • He3 with converter: Run 7035 -> Red
  • run start: 16:01:34
  • run stop: 16:11:28

7/22/21

Results from scalar runs
2mV Threshold NaI 5mV Threshold NaI He3 Tube
2mv NaI Conv In Out Plot.png
5mv NaI Conv In Out Plot.png
He3 Conv In Out Plot.png

Adjusting discriminator threshold for NaI with/without converter

Source at 20cm, Converter in place

Threshold (mV) Counts Run Time (s)
60 422 100
70 307 100
80 262 100
90 226 100
100 198 100
110 187
120 165
130 174
140 158

Source at 20cm, Converter removed

Threshold (mV) Counts Run Time (s)
60 100
70 100
80 100
90 100
100 100
110
120 245
130 259
140 237


PAS Feasibility Study Runs