The topological second-level trigger of the H.E.S.S. phase 2 telescope
Abstract
H.E.S.S is an array of atmospheric Cherenkov telescopes dedicated to GeV-TeV gamma-ray astronomy. The original array has been in operation since the beginning of 2004. It is composed of four 12-meter diameter telescopes. The installation of a fifth 28-meter diameter telescope is being completed. This telescope will operate both in stereoscopic mode and in monoscopic mode i.e. without a coincident detection on the smaller telescopes. A second-level trigger system is needed to supress spurious triggers of the 28-meter telescope when operated in monoscopic mode. This paper gives the motivation and principle of the second-level trigger. The principle of operation is illustrated by an example algorithm. The hardware implementation of the second level trigger system of H.E.S.S. phase 2 is described and its expected performances are then evaluated.
Cite
@article{arxiv.1012.1755,
title = {The topological second-level trigger of the H.E.S.S. phase 2 telescope},
author = {Y. Moudden and A. Barnacka and J-F. Glicenstein and P. Venault and D. Calvet and M. Vivier and G. Fontaine},
journal= {arXiv preprint arXiv:1012.1755},
year = {2015}
}
Comments
accepted for publication in Astroparticle Physics