The first peak from the left in both MCA spectrum is approximately the appropriate energy for 90 degree 0.511 MeV scattering which we expect to have an energy of 0.255 MeV. The peak in D1 has a centered energy of \(0.238 \pm 0.047\) MeV and the peak in D2 has a centered energy of \(0.252 \pm 0.039\) MeV both within reason. The second smaller peak which is easier to make out in the spectrum of D2 is also in line with Compton scattering we expect to see for a 1.27 MeV photon an unfortunate byproduct of the decay of sodium-22 which will not be quantum entangled with the 0.511 MeV photons being examined but effects our results none-the-less. One final thing to note is the reduction of background noise from D1 to D2. Most background noise seems to be coming from direct 1.27 MeV photons coming from the source as can be noted by the smallest peak seen in the spectrum for D1. A reduction of the background noise was able to be made by the placement of shielding directly between the source and D2, unfortunately our configuration did not allow for the same shielding to be placed between the source and D1 without a drastic reduction of overall counts. A 22 hour run was also done with no targets in and with our gate on to check for random coincidences, this was done to test reliability of real coincidences. In this case no coincidences were resolved.