High Altitude Water Cherenkov Experiment

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The High Altitude Water Cherenkov Experiment or High Altitude Water Cherenkov Observatory (also known as HAWC) is a gamma-ray and cosmic ray observatory located on the flanks of the Sierra Negra volcano in the Mexican state of Puebla at an altitude of 4100 meters, at 18°59′41″N 97°18′30.6″W / 18.99472°N 97.308500°W / 18.99472; -97.308500. HAWC is the successor to the Milagro gamma-ray observatory in New Mexico, which was also a gamma-ray observatory based around the principle of detecting gamma-rays indirectly using the water Cherenkov method.

HAWC is a joint collaboration between a large number of American and Mexican universities and scientific institutions, including the University of Maryland, the National Autonomous University of Mexico, the National Institute of Astrophysics, Optics and Electronics, Los Alamos National Laboratory, NASA/Goddard Space Flight Center, the University of California, Santa Cruz, Michigan Technological University, Michigan State University, Benemérita Universidad Autónoma de Puebla, the Universidad de Guadalajara, the University of Utah, the University of New Mexico, the University of Wisconsin–Madison and the Georgia Institute of Technology.^[1]