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

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 9/15-16/13

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

Run	Source	Energy (keV)	Channel
6055	Mn-54	834.848
6052	Na-22	511
6052	Na-22	1274.537
6056	Co-60	1173.228
6056	Co-60	1332.492

Linear Fit to the above lines

Energy=() + ADC9*()

3rd order fit

Energy=() + ADC9*() + ADC9*ADC9*()

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
6057	Eu-152	344.2785
6057	Eu-152	778.9040
6057	Eu-152	964.079
6057	Eu-152	1085.869
6057	Eu-152	1112.069
6057	Eu-152	1408.006
6061	Ba-133	276.3989
6061	Ba-133	302.8508
6061	Ba-133	356.0129

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

PAA_CoincidenceCounting#8.2F22.2F13_Activation