faq8 - FREQUENTLY ASKED QUESTIONS Lecture 17 Content...

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FREQUENTLY ASKED QUESTIONS Lecture 17 Content Questions Does the visualizer affect performance? Is there any way to do the simulation and visualize later? Yes, the visualizer is typically pretty slow. You would never do serious pro- duction of simulated events with the visualizer turned on. Usually the visu- alizer is used for debugging, or to get insight into what is physically going on, or to make pretty pictures for display. Typically what one does is to store sufficient information from the events (often in digitized form) to read later with a separate “event display” program (often the same program actually used to look at data). I think it’s possible to write code to do “replay” G4- style visualizing using written-out particle trajectories, but I’ve never done this myself. Where does simulation data get stored? How do you process sim- ulation results? This is entirely up to the user, and entirely flexible. If you want to write out events (usually you do) Geant4 does not specify the details of writing data:
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faq8 - FREQUENTLY ASKED QUESTIONS Lecture 17 Content...

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