Proton pack of the gun to represent the beam. Proton pack The proton pack is an energy weapon used for weakening ghosts and aiding in capturing them within the "Ghostbusters" universe. First depicted in the film "Ghostbusters", it has a hand-held wand ("Neutrona Wand" or particle thrower) connected to a backpack-sized particle accelerator. It fires a stream of highly focused and radially polarized protons that electrostatically traps the negatively charged energy of a ghost, allowing it to be held in the stream. The proton pack, designed by Dr. Egon Spengler, is a man-portable particle accelerator system that is used to create a
Egon Olsen secure world of the middle and upper classes." Egon's involvement in each film follows a similar pattern. Egon constantly develops new and "genius" plans during his stays in prison. His catchphrase is "I have a plan", which he says to his accomplices in all fourteen films after being released from prison. The plan succeeds through the most intricate machinations (Egon's specialty is the cracking of safes with merely a stethoscope and fine feeling) but Egon always loses his object of desire due to some freak accident at the end of the movie, usually caused by the incompetence of his accomplices.