PAA 8-22-13

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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

Au-196_5-08-22-13


Gold Foil

The link below will take you to the 0.002" thick gold foil measurements


Au-196_Foil-08-22-13

Barium Oxide BaO

BO-08-22-13

Y-88 foil

Y88-08-22-13

Nickel normalization foils

Ni-08-22-13

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 9/15/13

Ortec post amp setting:

Gain = 51.5
Shaping Time = 1.5 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 , Using only Det B , 4 min 35sec long, 219 Hz
6023 Y-88 1 uCi , Using only Det B , min sec long, Hz ,Moved source up 2" closer

PAA_CoincidenceCounting#8.2F22.2F13_Activation