Ultra-high energy cosmic rays’ fluorescent detector of the EUSO-SPB2 project

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详细

We presented a balloon experiment EUSO-SPB2 for the study of ultrahigh and extremely high energy cosmic rays. The main characteristics of the fluorescent and Cherenkov telescopes and their scientific tasks are given. As part of the pre-flight preparation, the calibration of a multi-channel photodetector was carried out.

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作者简介

A. Belov

Lomonosov Moscow State University

编辑信件的主要联系方式.
Email: daniil@eas.sinp.msu.ru
俄罗斯联邦, Moscow

P. Klimov

Lomonosov Moscow State University

Email: daniil@eas.sinp.msu.ru
俄罗斯联邦, Moscow

D. Trofimov

Lomonosov Moscow State University; Université Paris Cité

Email: daniil@eas.sinp.msu.ru
俄罗斯联邦, Moscow; Paris, France

参考

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  9. Bagheri M., Bertone P., Fontane I. et al. // arXiv: 2109.01789. 2021.

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2. Fig. 1. On the left - schematic of the EUSO-SPB2 fluorescence telescope, on the right - photo of the photodetector module consisting of 36 MAFEU with the total number of registration channels equal to 2304

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3. Fig. 2. On the left is the result of scanning the matrix of the photodetector module. The colour shows the efficiency of each pixel. The dark areas are the boundaries between the MAFEU. Scanning resolution - 200 × 200 points per side of the photodetector (side length 167 mm), LED wavelength - 375 nm. On the right is the dependence of the pixel efficiency on the discriminator threshold (s-curve calibration curves). Individual thresholds are set, at which the detection efficiency at a total threshold of 800 is maximum

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