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      EUSO-TA fluorescence detector

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          Abstract

          EUSO-TA is a pathfinder experiment for the space based JEM-EUSO mission for the detection of ultra-high energy cosmic rays. EUSO-TA is an high-resolution fluorescence telescope installed in front of the Black Rock Mesa fluorescence detectors of the Telescope Array (TA) experiment, in Utah (USA). At the TA site, a Central Laser Facility is installed for calibration purposes, since it emits laser beams with known energy and geometry. EUSO-TA consists of two 1 \(\mbox{m}^2\) Fresnel lenses, with a field of view of 10.5{\deg} that focus the light on a Photo Detector Module (PDM). The PDM currently consists of 36 Hamamatsu Multi-Anode Photo-Multipliers Tubes (MAPMTs) with 64 channels each. Front-end readout is performed by 36 ASICS, with two FPGA boards that send the data to a CPU and a storage system. The detector was installed in February 2015. Tests using the mentioned light sources have been performed and observations of cosmic ray events, as well as those of stars with different magnitude and color index have been done. The data acquisition is triggered by TA fluorescence detectors, although a self-trigger algorithm is currently in the last phases of development and test. With TA, thanks to its large field of view and the surface detectors, the cosmic ray shower events are reconstructed and the parameters are used to perform simulations of the response of EUSO-TA detector using EUSO-Offline. Simulations of the detected events are compared with data and the results are shown in this work.

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          Telescope Array Project for Extremely High Energy Cosmic Rays

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            Author and article information

            Journal
            2017-01-24
            Article
            1701.07091

            http://arxiv.org/licenses/nonexclusive-distrib/1.0/

            Custom metadata
            XXV ECRS 2016 Proceedings - eConf C16-09-04.3 4 pages 8 figures
            astro-ph.IM astro-ph.HE

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