PAS Feasibility Preliminary Runs

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

• run start: 13:01:51
• run stop: 13:12:07

• NaI without converter: Run 7033

• 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

• run start: 15:46:25
• run stop: 15:57:38

• He3 with converter: Run 7035

• run start: 16:01:34
• run stop: 16:11:28

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PAS Feasibility Study Runs