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CHICOS: Status and Prospects

Document Type

Conference Paper

Journal/Book Title/Conference

28th International Cosmic Ray Conference


Universal Academy Press, Inc.

Publication Date


First Page


Last Page



The California HIgh school Cosmic ray ObServatory (CHICOS) is a large area (∼ 400 km2) ground array for the study of ultra-high energy cosmic rays in the Los Angeles area. The main scientific goals of CHICOS are to study the flux, energy spectrum, and angular direction of cosmic rays at energies E > 1019 eV and to demonstrate a new strategy for fielding huge future arrays using urban infrastructure. At present there are 43 CHICOS sites operating; a total of 90 sites will be deployed and operational within the next year, resulting in an aperture of about 500 km2-sr at 1020 eV.


Originally published by Universal Academy Press, Inc. Publisher's PDF available through remote link. Must click on corresponding resource.