Speaker
Julian Sitarek
(University of Łódź)
Description
MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes
located in the Canary island of La Palma, Spain. During summer 2011
and 2012 it underwent a major upgrade. The main subsystems upgraded
were the MAGIC-I camera and its trigger system and the readout system
of both telescopes. We use observations of the Crab Nebula taken at
low and medium zenith angles to assess the key performance parameters
of the MAGIC stereo system. For low zenith angle observations, the
standard trigger threshold of the MAGIC telescopes is about 50 GeV. The
integral sensitivity for point-like sources with Crab Nebula-like
spectrum above 220 GeV is (0.66+/-0.03)% of Crab Nebula flux in 50 h
of observations. The angular resolution, defined as the sigma of a
2-dimensional Gaussian distribution, at energies of a few hundred GeV is below 0.07
degree, while the energy resolution is around 16%. We investigate the effect
of the systematic uncertainty on the data taken with the MAGIC
telescopes after the upgrade. We estimate that the systematic
uncertainties can be divided in the following components: < 15% in
energy scale, 11-18% in flux normalization and +/-0.15 for the slope
of the energy spectrum.
| Registration number following "ICRC2015-I/" | 500 |
|---|---|
| Collaboration | MAGIC |
Primary author
Julian Sitarek
(University of Łódź)
