Difference between revisions of "PAS Feasibility Preliminary Runs"

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 +
='''General run plan'''=
 +
 
'''This experimental setup does not contain BorAl'''
 
'''This experimental setup does not contain BorAl'''
−
 
−
='''General run plan'''=
 
  
 
* Run source in and source out in experimental setup and background subtract with NaI
 
* Run source in and source out in experimental setup and background subtract with NaI
Line 14: Line 14:
  
 
=='''7/19/21'''==
 
=='''7/19/21'''==
 +
 +
'''NaI detector 30cm from converter'''
  
 
NaI Detector, 5mV threshold, +1000V on detector, no converter
 
NaI Detector, 5mV threshold, +1000V on detector, no converter
Line 95: Line 97:
 
|}
 
|}
  
 +
=='''7/20/21'''==
 +
 +
detector is 5cm from converter (5cm from end of detector tunnel towards source)
 +
 +
He3 detector, 1250V, no converter, 250mV threshold
 +
 +
{| class="wikitable mw-collapsible mw-collapsed" border="2" style="text-align:center;" |cellpadding="20" cellspacing="1
 +
! 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
 +
 +
{| class="wikitable mw-collapsible mw-collapsed" border="2" style="text-align:center;" |cellpadding="20" cellspacing="1
 +
! 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
 +
 +
 +
{| class="wikitable"
 +
|-
 +
! NaI Overlay !! He3 Overlay
 +
|-
 +
| [[File:CH_NaI_With_Without_Gd_7-21-21.png|300px|thumb|none|NaI detector 30cm from Gd sheet placement. Red -> Gd present]] || [[File:CH_He3_With_Without_Gd_7-21-21.png|300px|thumb|none|He3 detector spanning the length of detector tunnel. Red -> Gd present]]
 +
[[File:calibration7023.png|300px|thumb|none|]]
 +
|}
 +
 +
=='''7/22/21'''==
 +
 +
{| class="wikitable"
 +
|+ Results from scalar runs
 +
|-
 +
! 2mV Threshold NaI!! 5mV Threshold NaI !! He3 Tube
 +
|-
 +
| [[File:2mv_NaI_Conv_In_Out_Plot.png|300px|thumb|none|]] || [[File:5mv_NaI_Conv_In_Out_Plot.png|300px|thumb|none|]] || [[File:He3_Conv_In_Out_Plot.png|300px|thumb|none|]]
 +
|}
 +
 +
==='''Adjusting discriminator threshold for NaI with/without converter'''===
 +
 +
Source at 20cm, Converter in place
 +
 +
{| class="wikitable mw-collapsible mw-collapsed" border="2" style="text-align:center;" |cellpadding="20" cellspacing="1
 +
|-
 +
! Threshold (mV) !! Counts !!  Run Time (s) ||
 +
|-
 +
| 60 || 422 || 100
 +
|-
 +
| 70 || 307 || 100
 +
|-
 +
| 80 || 262 || 100
 +
|-
 +
| 90 || 226 || 100
 +
|-
 +
| 100 || 198 || 100
 +
|-
 +
| 110 || 187 || 100
 +
|-
 +
| 120 || 165 || 100
 +
|-
 +
| 130 || 174 || 100
 +
|-
 +
| 140 || 158 || 100
 +
|}
 +
 +
Source at 20cm, Converter removed
 +
 +
{| class="wikitable mw-collapsible mw-collapsed" border="2" style="text-align:center;" |cellpadding="20" cellspacing="1
 +
|-
 +
! Threshold (mV) !! Counts !!  Run Time (s) ||
 +
|-
 +
| 60 || 533 || 100
 +
|-
 +
| 70 || 454 || 100
 +
|-
 +
| 80 || 398 || 100
 +
|-
 +
| 90 || 339 || 100
 +
|-
 +
| 100 || 311 || 100
 +
|-
 +
| 110 || 294 || 100
 +
|-
 +
| 120 || 245 || 100
 +
|-
 +
| 130 || 259 || 100
 +
|-
 +
| 140 || 237 || 100
 +
|}
 +
 +
====Source at 15cm, Converter removed====
 +
 +
{| class="wikitable mw-collapsible mw-collapsed" border="2" style="text-align:center;" |cellpadding="20" cellspacing="1
 +
|-
 +
! Threshold (mV) !! Scalar Counts !!  Run Time (s) !! Run Number||
 +
|-
 +
| 2 || 6287 || 100 || 7037
 +
|-
 +
| 5 || 3972 || 100 || 7038
 +
|-
 +
| 10 || 2834 || 100 || 7039
 +
|-
 +
| 15 || 2355 || 100 || 7040
 +
|-
 +
| 20 || 2032 || 100 || 7041
 +
|-
 +
| 25 ||  || 100 ||
 +
|-
 +
| 30 ||  || 100 ||
 +
|-
 +
| 40 ||  || 100 ||
 +
|-
 +
| 50 ||  || 100 ||
 +
|-
 +
| 60 ||  || 100 ||
 +
|-
 +
| 70 ||  || 100 ||
 +
|-
 +
| 80 ||  || 100 ||
 +
|-
 +
| 90 ||  || 100 ||
 +
|-
 +
| 100 ||  || 100 ||
 +
|-
 +
| 110 ||  || 100 ||
 +
|-
 +
| 120 ||  || 100 ||
 +
|-
 +
| 130 ||  || 100 ||
 +
|-
 +
| 140 ||  || 100 ||
 +
|-
 +
| 150 ||  || 100 ||
 +
|-
 +
| 160 ||  || 100 ||
 +
|-
 +
| 170 ||  || 100 ||
 +
|-
 +
| 180 ||  || 100 ||
 +
|-
 +
| 190 ||  || 100 ||
 +
|-
 +
| 200 ||  || 100 ||
 +
|-
 +
| 210 ||  || 100 ||
 +
|-
 +
| 220 ||  || 100 ||
 +
|-
 +
| 230 ||  || 100 ||
 +
|-
 +
| 240 ||  || 100 ||
 +
|-
 +
| 250 ||  || 100 ||
 +
|}
 +
 +
=='''8/5/21'''==
 +
 +
Today's game plan:
 +
* Run spectroscopy with NaI detector extremely close to Gd converter
 +
* Put BorAl into setup and run converter in/out
 +
* If time, adjust setup for HPGe and run with uncalibrated setup
 +
 +
{| class="wikitable mw-collapsible " border="2" style="text-align:center;" |cellpadding="20" cellspacing="1
 +
|-
 +
! Run Number !! Detector Type !! Disc. Thr (mV) !! BorAl !! Cf-252 Source !! Gd Converter !!Start Time !! End Time !! RCGUI Events !! Plot
 +
|-
 +
| 7061 || NaI ~1mm from Gd Conv. loc.|| 2mV || No || Yes, 20cm || No || 10:27:35 || 10:32:54 || 419627 || [[File:|50px|thumb|none|]]
 +
|-
 +
| 7062 || NaI ~1mm from Gd Conv. loc. || 2mV || No || Yes, 20cm || Yes || 10:41:45 || 10:46:56 || 407700 || [[File:|50px|thumb|none|]]
 +
|-
 +
| 7063 || NaI ~1mm from Gd Conv. loc. || 50mV || No || Yes, 20cm || Yes || 11:02:42 || 11:07:52 || 29669 || [[File:|50px|thumb|none|]]
 +
|-
 +
| 7064 || NaI ~1mm from Gd Conv. loc. || 50mV || No || Yes, 20cm || No || 11:12:41 || 11:17:54 || 24076 || [[File:|50px|thumb|none|]]
 +
|-
 +
| 7065 || NaI ~1mm from Gd Conv. loc. || 2mV || Yes || Yes, 20cm || Yes || 13:07:04 || 13:13:45 || 360169 || [[File:|50px|thumb|none|]]
 +
|-
 +
| 7066 || NaI ~1mm from Gd Conv. loc. || 2mV || Yes || Yes, 20cm || No || 13:17:39 || 13:22:45 || 276203 || [[File:|50px|thumb|none|]]
 +
|}
 +
 +
Time factors (1/run time):
 +
 +
* 7061 = 0.0031348
 +
 +
* 7062 = 0.00321543
 +
 +
* 7065 = 0.00249377
 +
 +
* 7066 = 0.00326797
 +
 +
 +
===8/5/21 Plots===
 +
 +
{| class="wikitable mw-collapsible " border="2" style="text-align:center;" |cellpadding="20" cellspacing="1
 +
|-
 +
! Gd In/Out 2mV Threshold !! Zoom into >1MeV !! Gd In/Out 50mV Threshold !! Gd In/Out with BorAl 2mV Threshold !! Overlay of Gd in/out with/out BorAl !! High energy of Gd in/out with/out BorAl
 +
|-
 +
| [[File:CH_NaI_Gdcomparison_Cf_8-5-21.png|150px|thumb|center|]] || [[File:CH_NaI_Gdcomparison_zoom_Cf_8-5-21.png|150px|thumb|center|]] || [[File:CH_NaI_Gdcomparison_50mVdisc_Cf_8-5-21.png|150px|thumb|center|]] || [[File:CH_NaI_Gdcomparison_BorAl_Cf_8-5-21.png|150px|thumb|center|]] || [[File:CH_NaI_Gd_BorAl_Comparison_8-6-21.png|150px|thumb|center|]] || [[File:CH_NaI_Gd_BorAl_Comparison_8-6-21_zoom.png|150px|thumb|center|]]
 +
|}
 +
 +
==8/6/21==
 +
 +
Background run over the weekend
 +
 +
{| class="wikitable mw-collapsible " border="2" style="text-align:center;" |cellpadding="20" cellspacing="1
 +
|-
 +
! Run Number !! Detector Type !! Disc. Thr (mV) !! BorAl !! Cf-252 Source !! Gd Converter !!Start Time !! End Time !! Run Time (s) !! RCGUI Events
 +
|-
 +
| 7074 || NaI ~1mm from Gd Conv. loc.|| 2mV || Yes || No || No || 8/6/21 16:28:52 || 8/9/21 10:09:00 (rocdaq1 disconnect) || 236,408 (2Dy 17Hr 40Min 8s) || 2073152
 +
|-
 +
|}
 +
 +
* 7074 time factor = 0.00000422998
 +
 +
[[File:CH_NaI_Background_Run.png|300px|thumb|none|]]
 +
 +
It seems evident that the low energy spikes seen in runs with Cf252 present are not from cosmics, as predicted. Background rate is ~0.01Hz, whereas low energy spike rates are ~40Hz with BorAl present. Current theory is that the spikes are from photons from Cf252 disintegration.
 +
 +
 +
 +
[[File:CH_Bad_Plot_3.png|300px|thumb|none|]] [[File:CH_Bad_Plot_4.png|300px|thumb|none|]]
 +
 +
='''Random runs'''=
 +
 +
=='''7/22/21'''==
 +
 +
Run 7042
 +
* Background run, 6x amplification in timing filter amp on fine gain, 1x on course.
 +
* 2mV threshold, no converter
 +
* ~10min run time
 +
 +
Run 7043
 +
* Cf252 source in run @ 20cm, 6x amplification in timing filter amp on fine gain, 1x on course.
 +
* 2mV threshold, no converter
 +
*~6min run time
 +
 +
Run 7044
 +
* Background run, source out of room, 6x amplification in timing filter amp on fine gain, 1x on course.
 +
* 2mV threshold, no converter
 +
* ~6.5min run time
 +
 +
Run 7045
 +
* Cs137 on top of NaI crystal, 6x amplification in timing filter amp on fine gain, 1x on course.
 +
* 2mV threshold, no converter
 +
* ~50s run time -> 50000 counts
 +
 +
Run 7046
 +
* Cs137 6in from NaI crystal, 6x amplification in timing filter amp on fine gain, 1x on course.
 +
* 2mV threshold, no converter
 +
* ~2min 40sec run time
 +
 +
Run 7047
 +
* Cs137 6in from NaI crystal, 2x amplification in timing filter amp on fine gain, 1x on course.
 +
* 2mV threshold, no converter
 +
* ~1min 30s run time
 +
 +
Run 7048
 +
* Cs137 6in from NaI crystal, 2x amplification in timing filter amp on fine gain, 1x on course. NO SIGNAL INTO ADC, still gating and read/write pulse.
 +
* 2mV threshold, no converter
 +
* ~2min run time
 +
 +
Run 7049
 +
* Cs137 6in from NaI crystal, 8x amplification in timing filter amp on fine gain, 4x on course.
 +
* 2mV threshold, no converter
 +
* ~1min run time
 +
 +
Run 7050
 +
* Cf252 source in with line of sight to NaI, 6x amplification in timing filter amp on fine gain, 1x on course.
 +
* 2mV threshold, no converter
 +
* ~45s run time
 +
 +
=='''8/20/21'''==
 +
 +
Run 7082
 +
* Cs137 source for initial calibration at beginning of run
 +
* Start time: 16:40:33 8/19/21
 +
* End time: 10:50:29 8/20/21
 +
* Events: 5649754
 +
 +
Run 7083
 +
* Cs137 source for initial calibration at beginning of run
 +
* Start time: 15:17:46 8/20/21
 +
* End time: 15:39:44 8/20/21
 +
* Events: 35932
 +
 +
Run 7086
 +
* Cs137 source for initial calibration at beginning of run
 +
* Cf252 present
 +
* Gd converter present
 +
* Start time: 8263 - 7577 = 686 sec (unix times) -> From the Joe program
 +
:* Time scaling factor 1/686 = 0.00146
 +
 +
Run 7087
 +
* Cs137 source for initial calibration at beginning of run
 +
* Cf252 NOT present
 +
* Start time: 9034 - 8423 = 611 sec (unix times)
 +
:* Time scaling factor 1/611 = 0.00164
 +
 +
Run 7088
 +
* Cs137 source for initial calibration at beginning of run
 +
* Cf252 present
 +
* Gd converter out
 +
* Start time:  (unix times)
 +
:* Time scaling factor 1/ =
 +
 +
Run 7089
 +
*Cs137 removed around event 7000
  
 
----
 
----

Latest revision as of 19:26, 23 August 2021

General run plan

This experimental setup does not contain BorAl

  • 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


NaI Overlay He3 Overlay
NaI detector 30cm from Gd sheet placement. Red -> Gd present
He3 detector spanning the length of detector tunnel. Red -> Gd present
Calibration7023.png

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
110 187 100
120 165 100
130 174 100
140 158 100

Source at 20cm, Converter removed

Threshold (mV) Counts Run Time (s)
60 533 100
70 454 100
80 398 100
90 339 100
100 311 100
110 294 100
120 245 100
130 259 100
140 237 100

Source at 15cm, Converter removed

Threshold (mV) Scalar Counts Run Time (s) Run Number
2 6287 100 7037
5 3972 100 7038
10 2834 100 7039
15 2355 100 7040
20 2032 100 7041
25 100
30 100
40 100
50 100
60 100
70 100
80 100
90 100
100 100
110 100
120 100
130 100
140 100
150 100
160 100
170 100
180 100
190 100
200 100
210 100
220 100
230 100
240 100
250 100

8/5/21

Today's game plan:

  • Run spectroscopy with NaI detector extremely close to Gd converter
  • Put BorAl into setup and run converter in/out
  • If time, adjust setup for HPGe and run with uncalibrated setup
Run Number Detector Type Disc. Thr (mV) BorAl Cf-252 Source Gd Converter Start Time End Time RCGUI Events Plot
7061 NaI ~1mm from Gd Conv. loc. 2mV No Yes, 20cm No 10:27:35 10:32:54 419627 [[File:|50px|thumb|none|]]
7062 NaI ~1mm from Gd Conv. loc. 2mV No Yes, 20cm Yes 10:41:45 10:46:56 407700 [[File:|50px|thumb|none|]]
7063 NaI ~1mm from Gd Conv. loc. 50mV No Yes, 20cm Yes 11:02:42 11:07:52 29669 [[File:|50px|thumb|none|]]
7064 NaI ~1mm from Gd Conv. loc. 50mV No Yes, 20cm No 11:12:41 11:17:54 24076 [[File:|50px|thumb|none|]]
7065 NaI ~1mm from Gd Conv. loc. 2mV Yes Yes, 20cm Yes 13:07:04 13:13:45 360169 [[File:|50px|thumb|none|]]
7066 NaI ~1mm from Gd Conv. loc. 2mV Yes Yes, 20cm No 13:17:39 13:22:45 276203 [[File:|50px|thumb|none|]]

Time factors (1/run time):

  • 7061 = 0.0031348
  • 7062 = 0.00321543
  • 7065 = 0.00249377
  • 7066 = 0.00326797


8/5/21 Plots

Gd In/Out 2mV Threshold Zoom into >1MeV Gd In/Out 50mV Threshold Gd In/Out with BorAl 2mV Threshold Overlay of Gd in/out with/out BorAl High energy of Gd in/out with/out BorAl
CH NaI Gdcomparison Cf 8-5-21.png
CH NaI Gdcomparison zoom Cf 8-5-21.png
CH NaI Gdcomparison 50mVdisc Cf 8-5-21.png
CH NaI Gdcomparison BorAl Cf 8-5-21.png
CH NaI Gd BorAl Comparison 8-6-21.png
CH NaI Gd BorAl Comparison 8-6-21 zoom.png

8/6/21

Background run over the weekend

Run Number Detector Type Disc. Thr (mV) BorAl Cf-252 Source Gd Converter Start Time End Time Run Time (s) RCGUI Events
7074 NaI ~1mm from Gd Conv. loc. 2mV Yes No No 8/6/21 16:28:52 8/9/21 10:09:00 (rocdaq1 disconnect) 236,408 (2Dy 17Hr 40Min 8s) 2073152
  • 7074 time factor = 0.00000422998
CH NaI Background Run.png

It seems evident that the low energy spikes seen in runs with Cf252 present are not from cosmics, as predicted. Background rate is ~0.01Hz, whereas low energy spike rates are ~40Hz with BorAl present. Current theory is that the spikes are from photons from Cf252 disintegration.


CH Bad Plot 3.png
CH Bad Plot 4.png

Random runs

7/22/21

Run 7042

  • Background run, 6x amplification in timing filter amp on fine gain, 1x on course.
  • 2mV threshold, no converter
  • ~10min run time

Run 7043

  • Cf252 source in run @ 20cm, 6x amplification in timing filter amp on fine gain, 1x on course.
  • 2mV threshold, no converter
  • ~6min run time

Run 7044

  • Background run, source out of room, 6x amplification in timing filter amp on fine gain, 1x on course.
  • 2mV threshold, no converter
  • ~6.5min run time

Run 7045

  • Cs137 on top of NaI crystal, 6x amplification in timing filter amp on fine gain, 1x on course.
  • 2mV threshold, no converter
  • ~50s run time -> 50000 counts

Run 7046

  • Cs137 6in from NaI crystal, 6x amplification in timing filter amp on fine gain, 1x on course.
  • 2mV threshold, no converter
  • ~2min 40sec run time

Run 7047

  • Cs137 6in from NaI crystal, 2x amplification in timing filter amp on fine gain, 1x on course.
  • 2mV threshold, no converter
  • ~1min 30s run time

Run 7048

  • Cs137 6in from NaI crystal, 2x amplification in timing filter amp on fine gain, 1x on course. NO SIGNAL INTO ADC, still gating and read/write pulse.
  • 2mV threshold, no converter
  • ~2min run time

Run 7049

  • Cs137 6in from NaI crystal, 8x amplification in timing filter amp on fine gain, 4x on course.
  • 2mV threshold, no converter
  • ~1min run time

Run 7050

  • Cf252 source in with line of sight to NaI, 6x amplification in timing filter amp on fine gain, 1x on course.
  • 2mV threshold, no converter
  • ~45s run time

8/20/21

Run 7082

  • Cs137 source for initial calibration at beginning of run
  • Start time: 16:40:33 8/19/21
  • End time: 10:50:29 8/20/21
  • Events: 5649754

Run 7083

  • Cs137 source for initial calibration at beginning of run
  • Start time: 15:17:46 8/20/21
  • End time: 15:39:44 8/20/21
  • Events: 35932

Run 7086

  • Cs137 source for initial calibration at beginning of run
  • Cf252 present
  • Gd converter present
  • Start time: 8263 - 7577 = 686 sec (unix times) -> From the Joe program
  • Time scaling factor 1/686 = 0.00146

Run 7087

  • Cs137 source for initial calibration at beginning of run
  • Cf252 NOT present
  • Start time: 9034 - 8423 = 611 sec (unix times)
  • Time scaling factor 1/611 = 0.00164

Run 7088

  • Cs137 source for initial calibration at beginning of run
  • Cf252 present
  • Gd converter out
  • Start time: (unix times)
  • Time scaling factor 1/ =

Run 7089

  • Cs137 removed around event 7000


PAS Feasibility Study Runs

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