# AW Singles Prob Y88 2015

Problem description:

The singles spectra production for the initial Y-88 activity is off by a factor of 2.
Right now the high energy line is a factor of 2 higher.

Ratio

UCRratio before efficiency correction

 Days (898 keV) Raw (1836 keV)Raw UCR (898 keV) Integral Eff Cor (1836 keV) Integral Eff Cor Ratio 108 1.01 1.364 Media:Run7022_898_raw.png 0.048 Media:Run7022_1836_raw1.png 0.62 174.2 13.24 269.8 30.91 1.55 159 1.49 0.8697 Media:Run7107_898_raw.png 0.042 Media:Run7107_1836_raw.png 0.58 111.07 9.753 160.8 20.9 1.45 229 2.15 0.4733 Media:Run7203_898_raw_ratio3.png 0.059 Media:Run7203_1836_raw_nocut.png 0.60 60.45 8.272 90.48 20.95 1.50 245 2.30 0.5807 Media:Run7235_898_raw.png 0.032 Media:Run7235_1836_raw.png 0.42 74.16 7.718 78.52 12.89 1.06

What is the background contribution to the above rates ( Background is all channels with rate < 0.1 Hz)

(Set energy window to )

 Days Energy (keV) Raw Integral Background Integral Ratio (Raw/Background) Sub Integral 108 1.01 898 1.34 0.0891 15.04 1.252 1836 0.8524 0.0200 42.62 0.8325 0.67 159 1.49 898 0.9576 0.1068 8.966 0.8501 1836 0.5300 0.0299 17.73 0.5007 .58 229 2.15 898 0.6682 0.2094 3.191 0.4589 1836 0.3539 0.0799 4.429 0.2740 0.59 245 2.30 898 0.541 0.0803 6.737 0.4595 1836 0.3033 0.0636 4.769 0.2414 0.52

Efficiency corrected plot of the two activities as a function of days