Gamma peak study with in exp. cell with CO-60

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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 along the beam line.

JB BeamLineLocations.png

Position [cm] Run number description
+162 5353 against back wall
+132 5354 In center of beam dump
+95 5356 at upstream-most edge of beam dump
0 5355 Target
-95 5357 Downstream-most edge of tunnel
-156 5358 Center of tunnel

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