Gamma peak study with in exp. cell with CO-60
Overview
I placed a photon source with trigger at various locations along the beam line and compared the resulting ToF spectrum with a Thorium target run. Each ToF spectrum was given a time offset equal to the time light takes to travel from room center to location of the trigger for that run, e.g. the ToF is given a +3.2 ns shift when the trigger/source is located at the beam dump (see image below). This was done to offset the effect of moving the trigger with the source.
Results
Determining which gamma peak originates from the thorium target is done by subtracting target-in and target-out data (runs 5320 & 5321). The gamma peak originating from the thorium target can be aligned with the gamma peak for a photon source placed at room center. After this alignment, overlaying thorium target spectrum with the spectra for photons sources at various locations along the beam line reveals possible origins of the multiple peaks appearing in the spectrum from the thorium target run.