<div dir="ltr">Gate users,<div><br></div><div>I have previously successfully built a simulation in which I have numerous scintillating spheres in a cylinder whose interstitial space contains alpha or beta radioactivity. This simulation runs okay, and the source particles are start in my expected volume, Waterbox. </div>
<div><br></div><div>Then I tried to slightly modify this simulation such that my source was now a Surface source that is located around each scintillating sphere. I have defined the same number of sources as I have beads. However, when I run a short test simulation with this, and verbosity set to 2, the output says that all of my source particles start in my pmt volume. This cannot be correct, as the x, y, and z coordinates of the first step of each particle do not correspond to either of my two pmt volumes. </div>
<div><br></div><div>I have attached my master macro (sourcetest.mac), my source definition macro (source.mac), my placements file for my repeater (test.placements), and the saved output from Gate when verbosity is set to 2 for this simulation (GateOut.out). Can anyone take a look and see why my particles are behaving so weirdly? When I visualize my source (one by one) I do in fact see spheres, as expected, but I do not know why they are not being tracked correctly. The difference in centroids for the scintillating spheres and the centroids for the source spheres is because of the mother volume for the scintillating spheres being offset from the origin. But I am fairly confident that they match up together in the simulation itself. </div>
<div><br></div><div>Any help is appreciated, I am very stumped.</div><div><br></div><div>-Amy</div></div>