Study of performance improvement for Air Shower Array with Surface Water Cherenkov Detectors
A. Shiomi*, K. Hibino, T.K. Sako, T. Asaba, Y. Katayose and M. Ohnishi
August 24, 2017
August 03, 2018
Unlike Imaging Atmospheric Cherenkov Telescopes (IACTs), Extensive Air Shower (EAS) arrays can observe cosmic rays with wide fields of view of about 2 sr and with duty cycles of almost 24 hours every day regardless of weather conditions or the moonlight. Some EAS arrays are located at high altitudes to lower their observation thresholds of cosmic rays and successfully observe gamma rays in the range of several TeV. However, sensitivity of EAS arrays is not as good as IACT mainly because the angular resolution of EAS arrays is poor. In this paper, we report the progress of performance study of an EAS array of scintillation detectors with surface water Cherenkov detectors (WCDs) for improving its angular resolution.
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