Difference between revisions of "10312013 TestRun"

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 +
=Goals=
 +
 +
Use NaI to measure Y-88 coincidence lines of 1836 and 898 keV
 +
 
=Runlist=
 
=Runlist=
 
{| border="1"  |cellpadding="20" cellspacing="0  
 
{| border="1"  |cellpadding="20" cellspacing="0  
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| 6561 || Running in coincidence mode, rate changed from about 70 Hz to about 2 Hz
 
| 6561 || Running in coincidence mode, rate changed from about 70 Hz to about 2 Hz
 
|-
 
|-
−
| 6562 || Running in OR mode with activated Y-88 sample #130100-010
+
| 6562 || Running in OR mode with activated Y-88 sample #130100-010 (highest intensity line is at 1460 keV)
 +
|-
 +
| 6575 || same conditions as run 6571 but with activated Y-88 sample #130100-010
 +
|-
 +
| 6576 || same conditions as run 6575 Coincidence run started Thu 31 Oct 2013 11:37:34 AM MDT (1383241054), ran for 598790 seconds = 6.93 days
 +
|-
 +
| 6577 || same conditions as run 6571 started on 11/7/13 OR mode
 +
|-
 +
| 6578 || In OR mode, decreased threshold from 40 mV to 10 mV
 +
|-
 +
| 6579 || same as run 6578 but only triggering on HpGe detector B , readback says its at 4520 volts, spec amp course gain = x20 , fine gain = 54, shaping time = .25 usec
 +
|-
 +
| 6580 || same as run 6579 but set pulser to 10 Hz to record run time in scaler channel 5
 +
|-
 +
| 6581 || same as run 6580
 +
|-
 +
| 6582 || same as run 6580 but using Cs-137 source # 129792, 19 min 36 sec,
 +
|-
 +
| 6583 || same as run 6580 but using Co-60 source # 124838, ,
 +
|-
 +
| 6584 || same as run 6580 but using Mn-54  source # 129804, 12 min 58 sec,
 +
|-
 +
| 6585 || same as run 6580 but using Na-22  source # 129741, 3 min 30 sec,
 +
|-
 +
| 6586 || same as run 6580 but COincidence mode using Na-22  source # 129743,, 1 hr, 46 min 21 sec
 +
|-
 +
| 6587 || same as run 6580 but No source, 31 min 55 sec
 +
|-
 +
| 6587 || same as run 6580 but No source, 31 min 55 sec
 +
|-
 +
| 6684 || Ba-133 source # 129791 in coincidence, 3 hours, 7 min, 29 sec
 
|-
 
|-
 
|}
 
|}
  
 +
==Energy Calibration==
  
−
calibrate with Na-22 (511,1200), Co-60 (1.2, 1.3), Mn-54 (0.8)
+
calibrate with Na-22 (511,1200), Co-60 (1.2, 1.3), Mn-54 (), Cs-137 (662 keV)
  
 
Calibration runs
 
Calibration runs
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| 6567 || Singles run with only NaI detector and Co-60 source
 
| 6567 || Singles run with only NaI detector and Co-60 source
 
|-
 
|-
−
| 6568 || singles runs with only HpGe detector and Co-60 source
+
| 6568 || singles runs with only HpGe detector and Co-60 source,October 31, 2013 4:54:03 PM MDT,1383238443-1383238497=54 seconds
 
|-
 
|-
 
| 6569 || OR mode, both detectors, 3k DAQ trigger rate. Co-60 1 uCi source # 129739
 
| 6569 || OR mode, both detectors, 3k DAQ trigger rate. Co-60 1 uCi source # 129739
 
|-
 
|-
−
| 6570 || Running in OR mode with Mn-54 source # 700 Hz
+
| 6570 || Running in OR mode with Mn-54 source # 129806 700 Hz,October 31, 2013 4:58:07 PM MDT,1383238687-1383239009=322 sec
 
|-
 
|-
 
| 6571 || Running in OR mode with only NaI in trigger and Mn-54 source, increased threshold from 10 mV to 40 mV to count more high energy photons
 
| 6571 || Running in OR mode with only NaI in trigger and Mn-54 source, increased threshold from 10 mV to 40 mV to count more high energy photons
 +
|-
 +
| 6572 || same as run 6571 but using Na-22 1 uCi source # 129742, October 31, 2013 5:19:47 PM MDT, 1383239987-1383240130= 143 second
 +
|-
 +
| 6573 || same as run 6571 but using Co-60 1 uCi source # 129739
 +
|-
 +
| 6574 || same as run 6571 but using and used Cs-137 1 uCi source #129793
 +
|-
 +
|}
 +
 +
 +
{| border="1"  |cellpadding="20" cellspacing="0
 +
|-
 +
|  Source || Energy || HpGe ch # (ADC 7)|| NaI ch # (ADC3)
 +
|-
 +
| Na-22 ||511 || 821.76 +/- 2.6 || 567.735 +/- 19.9
 +
|-
 +
| Cs-137 ||661.657 || 1025.7 +/- 2.1 ||  707.185 +/- 20.5
 +
|-
 +
| Mn-54|| 834.848 || 1260.46 +/- 2.1|| 866.607 +/- 21.9
 +
|-
 +
| Co-60 || 1173.228||1719.56 +/- 2.4 || 1173.85 +/- 35
 +
|-
 +
| Na-22 || 1274.537||1856.88 +/- 2.2 || 1265.59 +/- 36
 +
|-
 +
| Co-60 || 1332.492 || 1935.41 +/- 2.4 || 1318.99 +/- 34
 +
|-
 +
|}
 +
 +
 +
HpGe Fit
 +
 +
A=-94.978 +/- 0.719711  B=0.737543 +/- 0.000480387
 +
 +
ntuple->Draw("ADC7*0.737543 - 94.978 >>r6573(2200,0,4400)")
 +
 +
3rd order
 +
 +
-95.4193 +- 3.43312    0.73824 +- 0.0053233    -2.49548e-07 +- 1.89781e-06
 +
 +
===Nov 7 2013 ===
 +
{| border="1"  |cellpadding="20" cellspacing="0
 +
|-
 +
| Source || Energy || HpGe ch # (ADC 7)|| NaI ch # (ADC3)
 +
|-
 +
| Na-22 ||511 || 821.747 +/- 2.1||
 +
|-
 +
| Cs-137 ||661.657 || 1025.68 +/- 1.6 || 
 +
|-
 +
| Mn-54|| 834.848 || 1260.62 +/- 2.1||
 +
|-
 +
| Co-60 || 1173.228||1718.59 +/- 1.8 ||
 +
|-
 +
| Na-22 || 1274.537|| 1855.80 +/- 1.9||
 +
|-
 +
| Co-60 || 1332.492 || 1934.27 +/- 1.9 || 1
 +
|-
 +
|}
 +
 +
==Activity==
 +
 +
The photon spectrum measured on 10/31/13 from the Y-88 sample #130100-010 and a 1uCi Co-60 1 uCi source # 129739
 +
 +
[[File:r6568N_11-4-2013.png | 200 px]][[File:r6572N_11-4-2013.png | 200 px]]
 +
 +
 +
The NaI-22 measured rate was 366.8 events/sec while the Y-88 rate was about 30.6 events/sec.
 +
 +
A 1uCi  Mn-54 source # 129806  had a rate of 229.6 events/sec.
 +
 +
[[File:r6570N_11-4-2013.png | 200 px]]
 +
 +
 +
A rough estimate is that the Y-88 activity is less than 0.1 uCi.
 +
 +
==Efficiency Calibration==
 +
 +
Cs-137, 661.660 line, 85.21% * 92.11 nCi on July 1, 2008, half life 30.0 +/- 0.2 yrs, nov 1 activity = 81.48 nCi expected rate for 661 line
 +
 +
:= <math>\left (0.8521 \right )\left ( 81.48 \times 10^{-9} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)= 2568.9 Hz </math>
 +
 +
Na-22, 108.5n Ci on July 1, 2008, half life 2.602 +/- 0.002 years, 99.937% for 1274.52 and 178.8 for 511 line , activity in  nov. 1 =26.19 nCi
 +
:= <math>\left (0.99937 \right )\left ( 26.19 \times 10^{-9} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)= 968.4 Hz </math> for the 1274 line
 +
 +
:= <math>\left (1.788 \right )\left ( 26.19 \times 10^{-9} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)=  1732.6 Hz </math> for the 511 line
 +
 +
 +
 +
Mn-54, 110.4 nCi on July 1, 2008, half life =312.20 +/- 0.07 days, 99.975% intensity on 834.826 , nov activity =1.47 nCi
 +
 +
 +
:= <math>\left (0.99975 \right )\left ( 1.47 \times 10^{-9} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)=  54.4 Hz </math> for the 834 line
 +
 +
Co-60, 108.0 nCi June 1, 2008, half life 5.271 +/- 0.001 years, 99.0 % for 1173.237 and 99.9824 % for 1332.501, nov activity=52.97  nCi
 +
 +
 +
:= <math>\left (0.99 \right )\left ( 52.97 \times 10^{-9} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)=  1940.3 Hz </math> for the 1173 line
 +
 +
 +
:= <math>\left (0.999824 \right )\left ( 52.97 \times 10^{-9} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)=  1959.5 Hz </math> for the 1332 line
 +
 +
 +
 +
===button source 1.5" from face of Det B===
 +
 +
{| border="1"  |cellpadding="20" cellspacing="0
 +
|-
 +
| Run || Source || Energy || Expected rate (Hz) ||HpGe Det B Rate (ADC 7) (Hz) || HpGe Eff (%) || NaI Rate (ADC3) (Hz)
 +
|-
 +
| 6585 || Na-22 ||511 || 1732.6  || (506:516) (26.57-2.314)=24.256 || 1.4 ||
 +
|-
 +
| 6582 || Cs-137 ||661.657 || 2568.9  ||(656:666) (32.05-0.3923)= 31.66 ||  1.2 ||
 +
|-
 +
| 6584 || Mn-54|| 834.848 || 54.4 || (830:837)(0.9722-0.3546) =0.6176 || 1.1 ||
 +
|-
 +
| 6583 || Co-60 || 1173.228||1940.3 || (1166:1178)(15.13-0.2866)=14.84 || 0.76 ||
 +
|-
 +
| 6585 || Na-22 || 1274.537||968.4 || (1268:1278) (7.348-0.5816)=6.77 || 0.70 ||
 +
|-
 +
| 6583 || Co-60 || 1332.492 || 1959.5 || (1324:1338) (13.1-0.1627)=12.94 || 0.66 ||
 
|-
 
|-
 
|}
 
|}
 +
 +
===Runs===
 +
 +
{| border="1"  |cellpadding="20" cellspacing="0
 +
|-
 +
|  Run || Description||
 +
|-
 +
| 6582 || same as run 6580 but using Cs-137 source # 129792, 19 min 36 sec, 1175.8 seconds
 +
|-
 +
| 6583 || same as run 6580 but using Co-60 source # 124838, ,821.7 seconds
 +
|-
 +
| 6584 || same as run 6580 but using Mn-54  source # 129804, 12 min 58 sec,775.6 seconds
 +
|-
 +
| 6585 || same as run 6580 but using Na-22  source # 129741, 3 min 30 sec, 207.0 seconds
 +
|-
 +
| 6587 || same as run 6580 but No source, 31 min 55 sec, 1912.0 seconds
 +
|-
 +
|}
 +
  
 
[[PAA_CoincidenceCounting#NaI_.26_HpGe_Coinc]]
 
[[PAA_CoincidenceCounting#NaI_.26_HpGe_Coinc]]

Latest revision as of 05:39, 19 November 2013

Goals

Use NaI to measure Y-88 coincidence lines of 1836 and 898 keV

Runlist

Run Description
6559 Coincidence run with Na-22 1 uCi source # 129742, ADC7 = HpGe, ADC3 = NaI, TDC16 = HpGe, TDC19 = NaI, Na-22's 1.2 keV photon is in channel 3600 for the HpGe detector and channel 500 for the NaI; need to decrease gain on HpGe so Y-88's 1.8 keV photon is in the ADC range
6560 Changed HpGe spec amp integration from 0.5 usec shaping time to 0.25 and ran in singles mode
6561 Running in coincidence mode, rate changed from about 70 Hz to about 2 Hz
6562 Running in OR mode with activated Y-88 sample #130100-010 (highest intensity line is at 1460 keV)
6575 same conditions as run 6571 but with activated Y-88 sample #130100-010
6576 same conditions as run 6575 Coincidence run started Thu 31 Oct 2013 11:37:34 AM MDT (1383241054), ran for 598790 seconds = 6.93 days
6577 same conditions as run 6571 started on 11/7/13 OR mode
6578 In OR mode, decreased threshold from 40 mV to 10 mV
6579 same as run 6578 but only triggering on HpGe detector B , readback says its at 4520 volts, spec amp course gain = x20 , fine gain = 54, shaping time = .25 usec
6580 same as run 6579 but set pulser to 10 Hz to record run time in scaler channel 5
6581 same as run 6580
6582 same as run 6580 but using Cs-137 source # 129792, 19 min 36 sec,
6583 same as run 6580 but using Co-60 source # 124838, ,
6584 same as run 6580 but using Mn-54 source # 129804, 12 min 58 sec,
6585 same as run 6580 but using Na-22 source # 129741, 3 min 30 sec,
6586 same as run 6580 but COincidence mode using Na-22 source # 129743,, 1 hr, 46 min 21 sec
6587 same as run 6580 but No source, 31 min 55 sec
6587 same as run 6580 but No source, 31 min 55 sec
6684 Ba-133 source # 129791 in coincidence, 3 hours, 7 min, 29 sec

Energy Calibration

calibrate with Na-22 (511,1200), Co-60 (1.2, 1.3), Mn-54 (), Cs-137 (662 keV)

Calibration runs

Cd=109 has coincidence lines at 203 & 250 keV

Run Description
6567 Singles run with only NaI detector and Co-60 source
6568 singles runs with only HpGe detector and Co-60 source,October 31, 2013 4:54:03 PM MDT,1383238443-1383238497=54 seconds
6569 OR mode, both detectors, 3k DAQ trigger rate. Co-60 1 uCi source # 129739
6570 Running in OR mode with Mn-54 source # 129806 700 Hz,October 31, 2013 4:58:07 PM MDT,1383238687-1383239009=322 sec
6571 Running in OR mode with only NaI in trigger and Mn-54 source, increased threshold from 10 mV to 40 mV to count more high energy photons
6572 same as run 6571 but using Na-22 1 uCi source # 129742, October 31, 2013 5:19:47 PM MDT, 1383239987-1383240130= 143 second
6573 same as run 6571 but using Co-60 1 uCi source # 129739
6574 same as run 6571 but using and used Cs-137 1 uCi source #129793


Source Energy HpGe ch # (ADC 7) NaI ch # (ADC3)
Na-22 511 821.76 +/- 2.6 567.735 +/- 19.9
Cs-137 661.657 1025.7 +/- 2.1 707.185 +/- 20.5
Mn-54 834.848 1260.46 +/- 2.1 866.607 +/- 21.9
Co-60 1173.228 1719.56 +/- 2.4 1173.85 +/- 35
Na-22 1274.537 1856.88 +/- 2.2 1265.59 +/- 36
Co-60 1332.492 1935.41 +/- 2.4 1318.99 +/- 34


HpGe Fit

A=-94.978 +/- 0.719711 B=0.737543 +/- 0.000480387

ntuple->Draw("ADC7*0.737543 - 94.978 >>r6573(2200,0,4400)")

3rd order

-95.4193 +- 3.43312 0.73824 +- 0.0053233 -2.49548e-07 +- 1.89781e-06

Nov 7 2013

Source Energy HpGe ch # (ADC 7) NaI ch # (ADC3)
Na-22 511 821.747 +/- 2.1
Cs-137 661.657 1025.68 +/- 1.6
Mn-54 834.848 1260.62 +/- 2.1
Co-60 1173.228 1718.59 +/- 1.8
Na-22 1274.537 1855.80 +/- 1.9
Co-60 1332.492 1934.27 +/- 1.9 1

Activity

The photon spectrum measured on 10/31/13 from the Y-88 sample #130100-010 and a 1uCi Co-60 1 uCi source # 129739

R6568N 11-4-2013.pngR6572N 11-4-2013.png


The NaI-22 measured rate was 366.8 events/sec while the Y-88 rate was about 30.6 events/sec.

A 1uCi Mn-54 source # 129806 had a rate of 229.6 events/sec.

R6570N 11-4-2013.png


A rough estimate is that the Y-88 activity is less than 0.1 uCi.

Efficiency Calibration

Cs-137, 661.660 line, 85.21% * 92.11 nCi on July 1, 2008, half life 30.0 +/- 0.2 yrs, nov 1 activity = 81.48 nCi expected rate for 661 line

= [math]\left (0.8521 \right )\left ( 81.48 \times 10^{-9} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)= 2568.9 Hz [/math]

Na-22, 108.5n Ci on July 1, 2008, half life 2.602 +/- 0.002 years, 99.937% for 1274.52 and 178.8 for 511 line , activity in nov. 1 =26.19 nCi

= [math]\left (0.99937 \right )\left ( 26.19 \times 10^{-9} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)= 968.4 Hz [/math] for the 1274 line
= [math]\left (1.788 \right )\left ( 26.19 \times 10^{-9} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)= 1732.6 Hz [/math] for the 511 line


Mn-54, 110.4 nCi on July 1, 2008, half life =312.20 +/- 0.07 days, 99.975% intensity on 834.826 , nov activity =1.47 nCi


= [math]\left (0.99975 \right )\left ( 1.47 \times 10^{-9} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)= 54.4 Hz [/math] for the 834 line

Co-60, 108.0 nCi June 1, 2008, half life 5.271 +/- 0.001 years, 99.0 % for 1173.237 and 99.9824 % for 1332.501, nov activity=52.97 nCi


= [math]\left (0.99 \right )\left ( 52.97 \times 10^{-9} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)= 1940.3 Hz [/math] for the 1173 line


= [math]\left (0.999824 \right )\left ( 52.97 \times 10^{-9} \mbox{Ci} \right) \left (\frac{ (3.7 \times 10^{10} \mbox{Hz}}{\mbox{Ci}} \right)= 1959.5 Hz [/math] for the 1332 line


button source 1.5" from face of Det B

Run Source Energy Expected rate (Hz) HpGe Det B Rate (ADC 7) (Hz) HpGe Eff (%) NaI Rate (ADC3) (Hz)
6585 Na-22 511 1732.6 (506:516) (26.57-2.314)=24.256 1.4
6582 Cs-137 661.657 2568.9 (656:666) (32.05-0.3923)= 31.66 1.2
6584 Mn-54 834.848 54.4 (830:837)(0.9722-0.3546) =0.6176 1.1
6583 Co-60 1173.228 1940.3 (1166:1178)(15.13-0.2866)=14.84 0.76
6585 Na-22 1274.537 968.4 (1268:1278) (7.348-0.5816)=6.77 0.70
6583 Co-60 1332.492 1959.5 (1324:1338) (13.1-0.1627)=12.94 0.66

Runs

Run Description
6582 same as run 6580 but using Cs-137 source # 129792, 19 min 36 sec, 1175.8 seconds
6583 same as run 6580 but using Co-60 source # 124838, ,821.7 seconds
6584 same as run 6580 but using Mn-54 source # 129804, 12 min 58 sec,775.6 seconds
6585 same as run 6580 but using Na-22 source # 129741, 3 min 30 sec, 207.0 seconds
6587 same as run 6580 but No source, 31 min 55 sec, 1912.0 seconds


PAA_CoincidenceCounting#NaI_.26_HpGe_Coinc

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