LB Calibration 2/12/17

Runlist

Run Number	Isotope	Reference Date	Serial #	Activity	Egamma (keV)	Channel	Runtime (s)
r5892	Na-22	07/15/13	K4-899	10.19uCi	511	510.2 +/- 2.41	258
r5892	Na-22	07/15/13	K4-899	10.19uCi	1274.537	1272 +/- 2.729	258
r5893	Eu-152	07/01/08	129754	10.97uCi	1408.1	1406 +/- 2.859	361
r5893	Eu-152	"" ""	"" ""	"" ""	963.39	962 +/- 2.833	361
r5893	Eu-152	"" ""	"" ""	"" ""	778.9	777.3 +/- 2.851	361
r5893	Eu-152	"" ""	"" ""	"" ""	121.78	121.9 +/- 3.765	361
r5894	Ba-133	04/15/07	1235-74-3	9.821uCi	80.9971	81.27 +/- 4.52	563
r5894	Ba-133	"" ""	"" ""	"" ""	276.3997	276.2 +/- 1.947	563
r5894	Ba-133	"" ""	"" ""	"" ""	302.8510	302.6 +/- 1.406	563
r5894	Ba-133	"" ""	"" ""	"" ""	356.0134	355.5+/-1.289	563
r5894	Ba-133	"" ""	"" ""	"" ""	383.8480	383.3 +/- 1.39	563
r5895	Cs-137	05/01/05	S4121	9.067uCi	661.657	660.1 +/- 1.576	325

root command line used: PAA->Draw("PADC.PADC785N[3]/2-8>>photons(2000,0,2000)","")

ROOT gives values for A = 0.322688 +/- 1.09 and B is 0.997955 +/- 0.0018. Here A has a very large error. Plotting the function only using B will give values that are roughly 0.3 keV away from the expected energy values.

So the calibrated command is

PAA->Draw("PADC.PADC785N[3]/2-8 + 0.997955>>photons(2000,0,2000)","")

Calibration 2/13/17

Run Number	Isotope	Reference Date	Serial #	Activity	Egamma (keV)	Channel	Runtime (s)
5911	Thorium Rods			238.8
""	""			338.8
""	""			583.4
""	""			911.2
""	""			2614.6