Volume 395 - 37th International Cosmic Ray Conference (ICRC2021) - CRI - Cosmic Ray Indirect
Calibration system of EAS Cherenkov arrays using commercial drone helicopter.
D. Voronin, A. Fazliakhmetov*, N. Ushakov, A. Lukanov, B. Lubsandorzhiev and A. Sidorenkov
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Pre-published on: July 31, 2021
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Abstract
EAS Cherenkov arrays are a powerful instrument for studies of primary cosmic rays in a wide range of energy. In this approach the Earth’s atmosphere is used as a calorimeter providing EAS Cherenkov arrays high energy resolution. Another advantage of the method is its high time resolution which results in a good angular resolution. Usually EAS Cherenkov array is a sparsely instrumented array with a distance of 100 m (or more) between individual Cherenkov photon detectors (optical stations/modules) covering hundreds of square meters or a few thousands of square kilometers. So, to calibrate such arrays is not simple task. We developed a calibration system of EAS Cherenkov arrays based on a single fast light source on board of remotely controlled commercial drone helicopter. The light source is based on a single high power blue InGaN LED driven by avalanche transistors driver. The light source provides light pulses with 2-3 ns (FWHM) width and $10^{10} -10^{11}$ photons per pulse. Preliminary results of test flights of the calibration system are presented.
DOI: https://doi.org/10.22323/1.395.0268
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