Characteristics of the Multi-Telescope Coincidence Trigger of the HEGRA IACT System
Astrophysics
2009-10-30 v1
Abstract
The HEGRA--collaboration is operating a system of imaging atmospheric Cherenkov telescopes to search for sources of TeV-gamma-rays. Air showers are observed in stereoscopic mode with several telescopes simultaneously. To trigger the telescope system a versatile two-level trigger scheme has been implemented, which allows a significant reduction of the energy threshold with respect to single telescopes. The technical implementation of this trigger scheme and the performance of the trigger system are described. Results include the dependence of single- and multi-telescope trigger rates on the trigger thresholds, on the orientation of the telescopes, and on the type of the primary particle.
Keywords
Cite
@article{arxiv.astro-ph/9712063,
title = {Characteristics of the Multi-Telescope Coincidence Trigger of the HEGRA IACT System},
author = {N. Bulian and A. Daum and G. Hermann and M. Hess and W. Hofmann and H. Lampeitl and G. Puehlhofer and C. Koehler and M. Panter and M. Stein and G. Boerst and G. Rauterberg and M. Samorski and C. Sauerland and W. Stamm},
journal= {arXiv preprint arXiv:astro-ph/9712063},
year = {2009}
}
Comments
17 Pages, 10 figures, Latex