PAA 8-22-13
Au-196
crucible #5 Gold + Sand irradiation
The link below will take you to an analysis of the photon spectrum observed when a mixture of Au + Sand in a crucible is irradiated for 1 hour using a 44 MeV, 2kW electron beam incident on a 4 mm W converter
Gold Foil
The link below will take you to the 0.002" thick gold foil measurements
Barium Oxide BaO
Y-88 foil
Nickel normalization foils
runlist
ntuple->Draw("(ADC5-62.1537)/2.82207 >>(4096,0,4096)");
ntuple->Draw("(ADC9-39.8)/2.61747 >>(4096,0,4096)")
Group 1
| Run | Description | |
| 5786 | 21 min, 6 sec | |
| 5790 | Ba-133 source, TDC not getting hits | |
| 5791 | Ba-133 source , TDC not getting hits | |
| 5792 | Ba-133 source, TDC not getting hits | |
| 5817 | Gold foils, only counting with detector 180-3 (no TDC) 8 min 2 sec long, 556 Hz | |
| 5818 | Ni foil F1, only counting with detector 180-3 (no TDC) 6 min 31 sec long, 399 Hz | |
| 5819 | Ni foil B1, only counting with detector 180-3 (no TDC) 7 min 36 sec long, 417 Hz | |
| 5820 | empty, only counting with detector 180-3 (no TDC) 8 min 18 sec long, 396 Hz | |
| 5821 | Ba-132, only counting with detector 180-3 (no TDC) 6 min 1 sec long, Hz |
Group 2
Due to the low rates we reconfigured the setup putting the two detectors closer together
| Run | Description | |
| 5822 | Ba-132 + Al rod 130100-012, only counting with detector 180-3 (no TDC) 10 min 56 sec long, 459 Hz | |
| 5823 | empty rod 130100-011, only counting with detector 180-3 (no TDC) 11 min 49 sec long, 439 Hz | |
| 5825 | Y-88 130100-010, only counting with detector 180-3 (no TDC) 19 min 7 sec long, 500 Hz | |
| 5826 | Au-196, only counting with detector 180-3 (no TDC) 8 min 38 sec long, 1096Hz | |
| 5827 | sand+crucible, only counting with detector 180-3 (no TDC) 8 min 10 sec long, 989Hz | |
| 5828 | Coincidence, sand+crucible, only counting with detector 180-3 (no TDC) 15 hrs, 4 min 21 sec long, 47Hz, Det B HV OFF, Det B Coincidence window was more than 400 nsec | |
| 5829 | Coincidence, Au+sand+crucible #5 , 200 ns Coincidence window, no TDC hrs, min sec long, 23 Hz, Det B HV ON, ROC crashed after 45 hours 28 minutes, 285302 events recorded, scaler says 199440 seconds for run time=> 55 hours, I think the run lasted 2 hours assuming a 40 Hz counting rate and 285302 events, I think Det B warmed up during run, noise went high and high counting rate made ROC crash. | |
| 5831 | Coincidence, Au Foil 130100-009, only counting with detector 180-3 (no TDC) 35 min 6 sec long, 90Hz, Det B HV OFF, Det B Coincidence window was more than 400 nsec, Ignore run Det B in trigger | |
| 5832 | OR, Au Foil 130100-009, only counting with detector 180-3 (no TDC) 35 min 6 sec long, 16 kHz,Ignore run Det B in trigger | |
| 5833 | OR, Ni Foil B1, only counting with detector 180-3 (no TDC) 35 min 6 sec long, 16 kHz, Det B HV OFF,Ignore run Det B in trigger | |
| 5834 | AND, Ni Foil B1, only counting with detector 180-3 (no TDC) min sec long, 23 Hz, Det B HV OFF,Ignore run Det B in trigger | |
| 5836 | OR, Ni Foil B1, only counting with detector 180-3 (no TDC) 7 min 53sec long, 213 Hz, Det B HV OFF, | |
| 5837 | OR, Ni Foil F1, only counting with detector 180-3 (no TDC) 8 min 20 sec long, 211 Hz, Det B HV OFF, | |
| 5838 | OR, Au Foil 130100-009, only counting with detector 180-3 (no TDC) 8 min 1sec long, 808 Hz, Det B HV OFF, | |
| 5839 | OR, Empty Crucible that held BaO during irradiation, only counting with detector 180-3 (no TDC) 8 min 24 sec long, 222 Hz, Det B HV OFF, | |
| 5846 | OR, no sample t, only counting with detector 180-3 (no TDC) min sec long, Hz, Det B HV OFF, | |
| 5850 | OR, no sample t, (no TDC) 8 min 28 sec long, 499 Hz, Det B HV ON, | |
| 5852 | Gold Foil 130100-009, only counting with detector 180-3 (no TDC) 7 min 34 sec long, 716 Hz, Det B HV OFF, | |
| 5853 | Ni -001(B1), only counting with detector 180-3 (no TDC) 9 min 10 sec long, 195 Hz, Det B HV OFF, | |
| 5854 | Ni -002 (B2), only counting with detector 180-3 (no TDC) 8 min 35 sec long, 233 Hz, Det B HV OFF, | |
| 5855 | Ni -003 (B3), only counting with detector 180-3 (no TDC) 8 min 40 sec long, 214 Hz, Det B HV OFF, | |
| 5856 | Ni -004 (B4), only counting with detector 180-3 (no TDC) 7 min 48 sec long, 213 Hz, Det B HV OFF, | |
| 5857 | Ni -006 (F2), only counting with detector 180-3 (no TDC) 8 min 1 sec long, 241 Hz, Det B HV OFF, | |
| 5858 | Ni -007 (F3), only counting with detector 180-3 (no TDC) 8 min 2 sec long, 231 Hz, Det B HV OFF, | |
| 5859 | Ni -008 (F4), only counting with detector 180-3 (no TDC) 8 min 3 sec long, 217 Hz, Det B HV OFF, | |
| 5860 | Ni -009 (F1), only counting with detector 180-3 (no TDC) 8 min 0 sec long, 187 Hz, Det B HV OFF, | |
| 5889 | Ba-133 source 129790 1.2 uCi, only counting with detector 180-3, TDC is back (someone changed the NIM->ECL connector polarity) 2 min 44 sec long, 1944 Hz, Det B HV OFF, | |
| 5900 | Ba-133 source 129789 0.12 uCi, only counting with detector 180-3, 10 min 57 sec long, 378 Hz, Det B HV OFF, | |
| 5901 | Y-88 130100-010, only counting with detector 180-3 20 min 6 sec long, 184 Hz | |
| 5902 | Ba-132 + Al rod 130100-012, only counting with detector 180-3 9 min 56sec long, 191 Hz | |
| 5903 | empty rod 130100-011, only counting with detector 180-3 23 min 19 sec long, 179 Hz |
Group 3
changed Det 180-2 post amp 8.92 to 4.62
| Run | Description | |
| 5905 | Y-88 130100-010 changed post amp 8.92 to 4.62 , only counting with detector 180-3 15 min 28 sec long, 70 Hz | |
| 5906 | Na-22 0.1 uCi source # 129741 , only counting with detector 180-3 3 min 42 sec long, 146 Hz | |
| 5907 | Ba-133 0.1 uCi source # 129789 , only counting with detector 180-3 2 min 42 sec long, 140 Hz |
Group 4
changed Det 180-2 post amp from 4.62 back to 8.92
- TDC is working again below is a table identifying channels and detector
| Det | ADC | TDC |
| 180-2 | ADC5 | TDC16 |
| Det B | ADC9 | TDC19 |
| Run | Description | |
| 5908 | Ba-133 0.1 uCi source # 129789 , Using both detectors in OR mode | |
| 5909 | Ba-133 0.1 uCi source # 129789 , Using both detectors in OR mode , changed Det 180-2 threshold from 18 to 10 mV, 8 min 30 sec long, 783 Hz | |
| 5910 | Ba-132 + Al rod 130100-012, Using both detectors in OR mode, 33 min 5 sec long, Hz |
There is a peak in ADC9 at high energy but not in ADC5. I will turn down the post amp for ADC5 (Det 180-2).
Group 5 9/4/13
Det 180-2 Postamp is set to a fine gain of 8 and a course gain of 20, the CFD is at 10 mV
Det B Postamp is set to a fine gain of 9.32 and a course gain of 20, the CFD is at 10 mV
| Run | Description | |
| 5912 | Ba-133 0.1 uCi source # 129789 , Using both detectors OR mode , 4 min 21 sec long, 809 Hz | |
| 5913 | Na-22 0.1 uCi source # 129741, Using both detectors OR mode, 4 min 8 sec long, 656 Hz | |
| 5914 | Ba-132 + Al rod 130100-012, Using both detectors OR mode, 13 min 17 sec long, 470 Hz | |
| 5915 | Ba-132 + Al rod 130100-012, Using both detectors AND mode, 9 hrs 6 min 57 sec long, 1.2 Hz |
Group 6 9/5/13
Accelerator was on during these measurements, perhaps the RF is adding noise to the ground line as I saw a 3 keV RMS in the Na-22 run.
| Run | Description |
| 5916 | Au foil 130100-009, Using only Det 180-2 (Det B warm), 10 min 25 sec long, 388 Hz |
| 5917 | Ba-133 source # 129789, Using only Det 180-2 (Det B warm), 2 min 42 sec long, 407 Hz |
| 5918 | Ni foil F2 # 130100-006, Using only Det 180-2 (Det B warm), 7 min 33 sec long, 196 Hz |
| 5919 | Ni foil B1 # 130100-001, Using only Det 180-2 (Det B warm), 8 min 50 sec long, 190 Hz |
| 5920 | Ni foil F1 # 130100-005, Using only Det 180-2 (Det B warm), 10 min 50 sec long, 190 Hz |
| 5921 | Ni foil B4 # 130100-004, Using only Det 180-2 (Det B warm), 15 min 52 sec long, 195 Hz |
| 5922 | Na-22 source # 129741, Using only Det 180-2 (Det B warm), 6 min 19 sec long, 299 Hz |
| 5923 | No target (Background), Using only Det 180-2 (Det B warm), 50 min 21 sec long, 185 Hz |
Group 7 9/12/13
| Run | Description |
| 5996 | Ba-133 129789 0.1 uCi , Using only Det 180-2 with its HV off (Det B warm), 6 min 32 sec long, 173 Hz |
| 5997 | Ba-133 129790 1 uCi , Using only Det 180-2 with its HV off (Det B warm), 9 min 33 sec long, 653 Hz |
| 5999 | Ba-133 129790 1 uCi , Using only Det 180-2 with its HV off (Det B warm),Change post amp from 20 to 50 and raised discriminator from 10 to 30 mV 3 min 10 sec long, 265 Hz |
| 6000 | Ba-133 129790 1 uCi , Using only Det 180-2 with its HV off (Det B warm),Change post amp from 50 to 100 and raised discriminator from 30 to 40 mV 4 min 2 sec long, 803 Hz |
Group 7 9/12/13
| Run | Description |
| 6004 | Ba-133 129790 1 uCi , Using only Det B , min sec long, Hz |
Group 8 9/15-16/13
Ortec post amp setting:
- Gain = 51.5
- Shaping Time = 1. usec
Canbera discriminator:
- Lower Energy = 8 mV
- Upper Energy = Max
- Delay = Min = 0
| Run | Description |
| 6012 | Ba-133 129790 1 uCi , Using only Det B , 5 min 31 sec long, 1255 Hz |
| 6013 | Ba-133 129790 1 uCi , Using only Det B HV off , 3 min sec long, Hz, rate went up to 2kHz and ROC crashed after 200k event |
| 6015 | Ba-133 129790 1 uCi , Using only Det B , 2 min 34sec long, Hz rate was 1400 Hz so moved source farther away to be on top of aluminum stand |
| 6016 | Ba-133 129790 1 uCi , Using only Det B , 5 min 2sec long, 520 Hz |
| 6017 | No Source (Background) , Using only Det B , 8 min 43sec long, 221 Hz , pulser was in EXT trigger mode. |
| 6020 | No Source (Background) , Using only Det B , 15 hours, 12 min 37 sec long, 55 Hz increase CFD threshold to 49 mv (~430 keV) to measure high energy component of spectrum overnight, changer pulser to INTeral trigger mode so scaler now has 1Hz clock |
| 6021 | Ba-133 129790 1 uCi , Using only Det B , 4 min 5sec long, 505 Hz ,decrease CFD threshold to 8 mv (~70 keV) |
| 6022 | Y-88 1 uCi 1219-33-5, Using only Det B , 4 min 35sec long, 219 Hz |
| 6023 | Y-88 1 uCi 1219-33-5, Using only Det B , 3 min 3 sec long, Hz ,Moved source up 2" closer, no difference, I think I am just measureing background with this source |
| 6024 | Na-22 1 uCi 129742, Using only Det B , 4 min 11 sec long, 471 Hz |
| 6025 | Y-88 1 uCi 130100-010, Using only Det B , 3 min 4 sec long, 223 Hz , not much above background here |
| 6026 | Ba-132 + Al rod 130100-012, only counting with detector B, 8 min 41 sec long, 224 Hz , just background here too except for a line around 910 keV which is not Ba-133 |
| 6028 | Al rod 130100-011, only counting with detector B, 13 min 22 sec long, 220 Hz , just background here too except for a line around 830 keV which is not Ba-133 |
| 6029 | Y-88 1 uCi 130100-010, Using only Det B , increase CFD threshold to 49 mv (~430 keV) , 17 min 28 sec long, Hz , The shielded HpGe detector saw both Y-88 lines and had a FWHM width of 3 keV on the 898 line I get a FWHM = 3.44 keV |
Group 9 9/16/13
Ortec post amp setting:
- Gain = 21.5
- Shaping Time = 1. usec
Canbera discriminator:
- Lower Energy = 8 mV
- Upper Energy = Max
- Delay = Min = 0
| Run | Description |
| 6029 | Y-88 130100-010, Using only Det B , increase CFD threshold to 49 mv (~430 keV) , 17 min 28 sec long, 50 Hz , The shielded HpGe detector saw both Y-88 lines and had a FWHM width of 3 keV on the 898 line I get a FWHM = 3.44 keV |
| 6030 | Y-88 130100-010, Using only Det B , increase CFD threshold to 49 mv , Post amp gain is now 21.5, 6 min 12 sec long, 20 Hz |
| 6031 | Co-60 1 uCi 1129739, Using only Det B , , Post amp gain is now 21.5, min sec long, |
| 6034 | Co-60 1 uCi 1129739, Using only Det B , increase CFD threshold to 49 mv ( , Post amp gain is now 50 lowered fine gain to 4 turns from min, 1 min 13 sec long, 640 Hz |
| 6035 | Y-88 130100-010, Using only Det B , increase CFD threshold to 49 mv , Post amp gain is now 50 lowered fine gain to 4 turns from min (dial reads 9.0) ,2 min 17 sec long, 34 Hz |
| 6036 | Y-88 130100-010, Using only Det B , Lower CFD threshold from 49 mv to 20 mV, Post amp gain is now 50 lowered fine gain to 4 turns from min, 5 min 35 sec long, 84 Hz |
| 6037 | background, Using only Det B , Lower CFD threshold from 49 mv to 20 mV, Post amp gain is now 50 lowered fine gain to 4 turns from min, 5 min 12 sec long, 79 Hz |
| 6038 | Mn-54 1 uCi 129806 (834.848 keV = 1256.51 channels), Using only Det B , Lower CFD threshold from 49 mv to 20 mV, Post amp gain is now 50 lowered fine gain to 4 turns from min, 2 min 36 sec long, 102 Hz |
| 6039 | Eu-154 1 uCi 129753 (996.262 keV = 1627.67, 1004.725 keV = 1665.91, 1408 kev = ,1112 keV), Using only Det B , Lower CFD threshold from 49 mv to 20 mV, Post amp gain is now 50 lowered fine gain to 4 turns from min, 1 min 31 sec long, 1034 Hz |
| 6040 | CS-137 1 uCi 129793 (661.657 keV=997.53 channels), Using only Det B , Lower CFD threshold from 49 mv to 20 mV, Post amp gain is now 50 lowered fine gain to 4 turns from min, 1 min 16 sec long, 923 Hz |
| 6041 | Y-88 130100-010, Using only Det B , , 3 hrs, 18 min 48 sec long, (scaler = 23850/2 seconds) 84 Hz |
Energy= ADC9*0.50581 + 173.833
Energy = 113.977+0.587248*ADC9-0.000026467*ADC9*ADC9
Group 10 9/17/13
Ortec post amp setting:
- Gain = 56
- Shaping Time = 1. usec
Canbera discriminator:
- Lower Energy = 8 mV
- Upper Energy = Max
- Delay = Min = 0
| Run | Description |
| 6052 | Na-22, Using only Det B , 1 min 9sec long, 996 Hz |
| 6055 | Mn-54 1 uCi 129806 (834.848 keV = channels), Using only Det B , 1 min 38 sec long, 172 Hz, source activity low so there is a lot of background, 834 keV peak is around channel 818 |
| 6056 | Co-60 1 uCi 129739, Using only Det B , 1 min 2 sec long, 1019 Hz |
| 6057 | Eu-154 1 uCi 129753 (996.262 keV = 1627.67, 1004.725 keV = 1665.91, 1408 kev = ,1112 keV), Using only Det B , min sec long, 900 Hz, |
| 6058 | Eu-154 1 uCi 129753 (996.262 keV = 1627.67, 1004.725 keV = 1665.91, 1408 kev = ,1112 keV), Using only Det B ,2 min 9sec long, 393 Hz, moved source down to check effect of high activity/deadtime |
| 6059 | Ba-133 1 uCi 129793 (661.657 keV=997.53 channels), Using only Det B ,1 min 53 sec long, 378 Hz |
| 6060 | no source, background, Using only Det B , 3 min 27 sec long, 222 Hz |
| 6061 | Ba-132 130100-012, Using only Det B , 10 min 31 sec long, 227 Hz, mostly background |
| 6062 | Au-196 130100-009, Using only Det B , 8 min 3 sec long, 247 Hz clear peack visible at 350 chan, 425, 425, 438 |
| 6063 | Y-88 130100-010, Using only Det B , 9 hrs, 14 min 5 sec long, 228 Hz |
| 6064 | no source (background), Using only Det B , 13 hrs, 31 min 11 sec long, 212 Hz |
Group 11 9/18/13
Ortec post amp setting:
- Gain = 56
- Shaping Time = 1. usec
Canbera discriminator:
- Lower Energy = 8 mV
- Upper Energy = Max
- Delay = Min = 0
| Run | Description |
| 6065 | Eu-152 1 uCi 129753 (996.262 keV = , 1004.725 keV = , 1408 kev = ,1112 keV), Using only Det B , 1 min 9sec long, 1392 Hz |
| 6066 | Ba-133 1.188 uCi 129790, (661.657 keV= channels)Using only Det B , 1 min 27sec long, 1294 Hz |
| 6067 | Mn-54 1.226 uCi 129806, (834.848 keV = channels)Using only Det B , 8 min 0 sec long, 241 Hz |
| 6068 | Na-22 1. uCi 129742, Using only Det B , 3 min 12 sec long, 968 Hz |
| 6069 | Co-60 1. uCi 129739, Using only Det B , 1 min 33 sec long, 1179 Hz |
| 6070 | Ni-57 130100-001 (F1), Using only Det B , 13 min 26 sec long, 221 Hz |
| 6071 | Ni-57 130100-005 (B1), Using only Det B , 17 min 32 sec long, 221 Hz, line at ch 2046 ? |
| 6072 | Au-196 foil 130100-009 , Using only Det B , 15 min 53 sec long, 241 Hz, lines around channel 105, 370 channels, scaler = 950 counts => 950 seconds, unix time => end_event1379520588 (16:09:48) - go_event 1379519640 (15:54:00)=>15:48 |
| 6073 | no source (background) , Using only Det B , 8 min 58 sec long, 220 Hz, |
| 6074 | no source (background) , Using only Det B ,15 min 3 sec long, 222 Hz, |
Calibration
| Run | Source | Energy (keV) | Channel |
| 6067 | Mn-54 | 834.848 | 818.678 \pm 0.07 |
| 6068 | Na-22 | 511 | 515.076 \pm 0.01 |
| 6068 | Na-22 | 1274.537 | 1240.23 \pm 0.03 |
| 6069 | Co-60 | 1173.228 | 1143.79 \pm 0.04 |
| 6069 | Co-60 | 1332.492 | 1295.63 \pm 0.03 |
Linear Fit to the above lines
- Energy=(-28.5758 +/- 0.793365) + ADC9*(1.05098 +/- 0.000759166)
3rd order fit
- Energy=(-46.6652 +- 3.00526) + ADC9*(1.09594 +- 0.00724494+ + ADC9*ADC9*(-2.47156e-05 +- 3.96083e-06)
ntuple->Draw("(-46.6652+ADC9*1.09594-ADC9*ADC9*2.47156e-05)>>(4096,0,4096)")
- Eu-152 has two close peaks at 1085 and 1112 keV which are easily identified in the raw spectrum, 344 keV line is 2nd strongest in Eu-152 spectrum
| Run | Source | Energy (keV) | Channel |
| 6065 | Eu-152 | 344.2785 | 360.617 \pm 0.02 |
| 6065 | Eu-152 | 411.1163 | not used for fit because low stats |
| 6065 | Eu-152 | 443.965 | not used for fit because low stats |
| 6065 | Eu-152 | 778.9040 | 765.509 \pm 0.07 |
| 6065 | Eu-152 | 964.079 | 942.985 \pm 0.01 |
| 6065 | Eu-152 | 1085.869 | 1060.88 \pm 0.01 |
| 6065 | Eu-152 | 1112.069 | 1085.31 \pm 0.01 |
| 6065 | Eu-152 | 1299.140 | not used for fit because low stats |
| 6065 | Eu-152 | 1408.006 | 1367.59 \pm 0.07 |
| 6066 | Ba-133 | 80.9979 | too close to CFD threshold |
| 6066 | Ba-133 | 276.3989 | 298.054 \pm 0.04 |
| 6066 | Ba-133 | 302.8508 | 322.391 \pm 0.02 |
| 6066 | Ba-133 | 356.0129 | 371.355 \pm 0.01 |
| 6066 | Ba-133 | 383.8485 | not used due to poor stats |
used the ROOT program
and this data
322.391 302.8508 371.355 356.0129 360.617 344.2785 515.076 511 818.678 834.848 942.985 964.079 1060.88 1085.869 1085.31 1112.069 1143.79 1173.228 1240.23 1274.537 1295.63 1332.492
Linear (2nd Order) fit
A=-35.7839 +/- 0.38244 B=1.05766 +/- 0.000422215
3rd order fit to all the above lines including the previous table with Na-22 as well
Parameters= -47.1934 +- 0.989607 1.0947 +- 0.00299342 -2.36801e-05 +- 1.89434e-06
ntuple->Draw("(-47.1934+ADC9*1.0947-ADC9*ADC9*2.36801e-05)>>(4096,0,4096)")
- The Fit to line 203 in Ba-133 is better using 3rd order poly fit to remove ADC non-linearity
| Run | Source | Energy (keV) | Channel |
| 6065 | Eu-152 | 996.262 | |
| 6065 | Eu-152 | 1004.725 | |
| 6065 | Eu-152 | 1408 | |
| 6065 | Eu-152 | 1112 | |
| 6066 | Ba-133 1.188 uCi 129790, (661.657 keV= channels)Using only Det B , 1 min 27sec long, 1294 Hz | ||
| 6067 | Mn-54 | 834.848 | 818.678 \pm 0.07 |
| 6068 | Na-22 | 511 | 515.076 \pm 0.01 |
| 6068 | Na-22 | 1274.537 | 1240.23 \pm 0.03 |
| 6069 | Co-60 | 1173.228 | 1143.79 \pm 0.04 |
| 6069 | Co-60 | 1332.492 | 1295.63 \pm 0.03 |
| 6073 | no source (background) , Using only Det B , 8 min 58 sec long, 220 Hz, | ||
| 6074 | no source (background) , Using only Det B ,15 min 3 sec long, 222 Hz, |