ABSTRACT
Ever since the groundbreaking discovery of cosmic radiation by Victor Hess in 1912 [1], one question has been driving the field of astroparticle physics: How does nature manage to accelerate particles up to energies, several orders of magnitude larger, than can be achieved in man-made accelerators (e.g., the Large Hadron Collider at CERN)? Even today, more than 100 years after Hess’s world-famous balloon flights, this question remains unanswered. Nowadays, however, several experiments around the globe are dedicated to answering this question by studying the different components of cosmic radiation [2].
