I recently spoke to a friends's father whose research and dissertation was exactly on what I am doing in this project: detecting cosmic rays through air showers. He said that this should theoretically work, but told me that 2 things need to happen: first, I need to increase my detector area. This can be done by adding lots of metal above my PIN diodes so that particles cascaded and multiply, without having to use too many diode. Second, I need to increase my timing resolution by one order of magnitude. This should not be difficult as long as I use pulse integration, as explained in an earlier project log.