Integration Movies

Here are some animated GIFs made from FRED event display pictures of cosmic rays taken during different phases of Integration and Test of the LAT instrument. The blue lines are the reconstructed tracks, the green lines or crosses are the tracker clusters and the red cubes are crystals in the calorimeter. The yellow line is the extrapolation of the reconstructed track (so you can see which ACD tile the particle crossed). The red square in an ACD tile is the center of the ACD tile with the smallest DOCA. The color of the ACD tiles depends on the threshold the signal in that tile passed: Red for Veto and Purple for the zero-suppression threshold. Please remember to thank Riccardo "Mr. FRED" Giannitrapani if you use these movies.