The LAAS network observation for studying time correlations in extensive air showers

Details The LAAS network observation for studying time correlations in extensive air showers The LAAS network observation for studying time correlations in extensive air showers

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4858...14o&link_type=abstract

Particle Astrophysics Instrumentation. Edited by Peter W. Gorham. Proceedings of the SPIE, Volume 4858, pp. 14-25 (2003).

Astronomy and Astrophysics

Astrophysics

3

Scientific paper

The Large Area Air Shower (LAAS) group has been performing a network observation of extensive air showers (EAS) since 1996 in Japan. Ten compact EAS arrays are operating simultaneously at distant stations (up to ≍1000 km) and detecting EAS with mean energy of ≍1015 eV. Each station has 4--12 scintillation counters and a Global Positioning System (GPS), which provides time stamps of EAS triggers with an accuracy of 1μs. As a consequence of the comparable time stamps, uniformly-adjusted detectors and a standardized data format among all stations, we can treat the independent observations as a gigantic EAS detector system as a whole. The primary purpose of the network observation is to study large-scale correlations in ultra-high-energy cosmic rays. On the other hand, three nearby stations within 1~km distance at Okayama area have a possibility to detect extremely-high-energy EAS (≍1019 eV) as coincident triggers of the three stations. The present status of the network and some results from computer simulations are reported here.

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