Water Cherenkov detector reconstruction by Generative Adversarial Neural networks

In a variety of physics experiment it can be beneficial to have targets with very large mass. One of the most cost effective ways to do so is using water. One important characteristic of water is that as light moves trough it approximately 3/4 of the speed of light in vacuum. When a charged particle travels through the water with higher speed than light, Cherenkov radiation is emitted. Charged particles also emit spherical waves due to particle polarization around the charge. In the case when E? > 2/= these waveforms overlap and interfere according to The Huygens principle. Resulting emission happens with an angle \ with respect to the particle direction. It is possible to detect this radiation cone and predict particle direction and energy based on amount of emitted light. Capturing of the signal happens using PMTs or photomultiplier tubes. For every charged particle there is some threshold total energy, for example electron theoretically needs to have 0.8MeV energy to radiate. Our study is based on architecture of Super-Kamiokande detector. It has volume of 50 kilotones and is located inside the Kamioka mine in Gifu Prefecture, Japan. Super-K has to separated regions inner and auter detector. Inner detector with the volume of 32 kilotones is surrounded by 11000 inward-facing 20-inch PMTs, enough for 40% coverage. One of the main purposes of Super-Kamiomande and other water Cherenkov experiments is to detect and study neutrinos trough observations of solar, atmospheric and artificially generated neutrinos. In 1998 a very important discovery of neutrino oscillations was made in Super-K, while observing atmospheric neutrinos created by muon decays, which implied they should be massive particles. Detection happens by two main ways, first when neutrino goes W exchange converting into equivalent charged leptons and second by elastic scattering with electron. Interaction might happen via exchange of Z bososns, in which case they do not convert into charged leptons. This interactions can be detected trough transfer of energy on the target.