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Humboldt-Universität zu Berlin - Mathematisch-Naturwissen­schaft­liche Fakultät - Experimentelle Elementarteilchenphysik

The H Collaboration (2004)

The trigger system of the H.E.S.S. telescope array

Astroparticle Physics, 22:285-296.

H.E.S.S.—The High Energy Stereoscopic System—is a new system of large atmospheric Cherenkov telescopes for GeV/TeV gamma-ray astronomy. This paper describes the trigger system of H.E.S.S. with emphasis on the multi-telescope array level trigger. The system trigger requires the simultaneous detection of air-showers by several telescopes at the hardware level. This requirement allows a suppression of background events which in turn leads to a lower system energy threshold for the detection of gamma-rays. The implementation of the H.E.S.S. trigger system is presented along with data taken to characterise its performance.

Provided by the SAO/NASA Astrophysics Data System