A novel background reduction strategy for high level triggers and processing in gamma-ray Cherenkov detectors
Abstract
Gamma ray astronomy is now at the leading edge for studies related both to fundamental physics and astrophysics. The sensitivity of gamma detectors is limited by the huge amount of background, constituted by hadronic cosmic rays (typically two to three orders of magnitude more than the signal) and by the accidental background in the detectors. By using the information on the temporal evolution of the Cherenkov light, the background can be reduced. We will present here the results obtained within the MAGIC experiment using a new technique for the reduction of the background. Particle showers produced by gamma rays show a different temporal distribution with respect to showers produced by hadrons; the background due to accidental counts shows no dependence on time. Such novel strategy can increase the sensitivity of present instruments.
Cite
@article{arxiv.0804.3896,
title = {A novel background reduction strategy for high level triggers and processing in gamma-ray Cherenkov detectors},
author = {G. Cabras and A. De Angelis and B. De Lotto and M. M. De Maria and F. De Sabata and O. Mansutti and M. Frailis and M. Persic and C. Bigongiari and M. Doro and M. Mariotti and L. Peruzzo and A. Saggion and V. Scalzotto and R. Paoletti and A. Scribano and N. Turini and A. Moralejo and D. Tescaro and the MAGIC Collaboration},
journal= {arXiv preprint arXiv:0804.3896},
year = {2009}
}
Comments
4 pages, 3 figures, Proc. of the 9th Int. Syposium "Frontiers of Fundamental and Computational Physics" (FFP9), (AIP, Melville, New York, 2008, in press)