All Physics Faculty Publications


CHICOS Detector Stations

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 (presently 400 square kilometers) ground array for the study of ultra high energy cosmic rays located in the Los Angeles area. Each CHICOS station employs two 1m2 scintillation counters from the decommissioned CYGNUS array [1] instrumented with 3” or 5” photomultiplier tubes from the decommissioned Palo Verde neutrino experiment [2]. We have developed a PC-based data acquisition system for these remote stations. Data are processed and transferred automatically over the internet once per day. At present there are 43 sites operating reliably.


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