Optimal Detector Thickness

As you may recall from the previous post I was investigating the making a layered detector, and I plotted the contribution of a particular film as a function of how far the film was in the detector.  This lead to the idea to ask what would be the best use of material - by making the detector thinner we could avoid some of the low contributions of reactions on the back of the detector.

I held the volume of the detector constant, and adjusted the length and width.  If we make our detector half of what the current He-3 footprint is (which means we need to make them twice as wide) our efficiency goes from 3.1 to 4.6.