Definitions for "Mariachi"
a Mexican instrumental ensemble consisting of violin, trumpet, and various guitars
a group of street musicians in Mexico
a group of musicians that gathers in restaurants or places where tourists are, and play guitar and sing with many voices for their listeners
MARIACHI, the Mixed Apparatus for Radar Investigation of Cosmic-rays of High Ionization, is an apparatus for the detection of ultra-high-energy cosmic rays (UHECR) via bi-static radar using VHF transmitters. Its inventors hope that it will detect UHECR over much larger areas than possible with prior detection apparatuses, and that it will also detect ultra high energy neutrino flux. The ground array detectors are scintillator arrays that are built and operated by high school students and teachers.