PoS - Proceedings of Science
Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Gamma-Ray Astronomy. GA-instrumentation
A hybrid time calibration method for EAS ground-based timing arrays
A. Porelli, R. Wischnewski* and M. Tluczykont
Full text: pdf
Pre-published on: September 12, 2017
Published on: August 03, 2018
In a ground-based Cherenkov EAS timing array, the reconstruction of the shower direction is based on the measured photon arrival times at the sensor stations. Relative time offset calibration down to sub-nsec precision is needed for optimal pointing precision. For large arrays, a direct time calibration by artificial light sources introduces a large effort. We discuss a new, hybrid method, that combines information obtained from extended air-showers and a few, dedicated individual station calibrations. We discuss the effect of using exclusively EAS information. The proposed method is particularly useful for large, several squared-km arrays.
DOI: https://doi.org/10.22323/1.301.0752
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