english: It's a picture of the first beam particle going all the way around the LHC, colliding with a piece of the LHC deliberately, and showering particles into the detector.
non_english: To je slika prvog snopa čestica kako se posle prolaska celom dužinom LHC-a sudara sa svrsishodno postavljenim delom LHC-a i rasipa čestice u detektor.