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Optical system for orbital detector of extreme-high-energy cosmic ray

An optical system of a Schmidt-type telescope for orbital detection is proposed. The system contains a spherical mirror and correction plate with one aspherical surface and has the following characteristics: field of view (FoV) is 40 deg, entrance pupil diameter is 2.5 m, diameter of spherical mirror is 4 m, and f -number is 0.74. The system with the described parameters has image spot size of 3.2-mm (RMS) diameter for the axial beam and 4 mm (RMS) on the edge of the FoV, which is less than the diagonal of the detectors square pixel of 3×3 mm2 3×3  mm2.

Vladislav V. Druzhin; Daniil T. Puryaev; Sergey A. Sharakin
J. of Astronomical Telescopes, Instruments, and Systems, 4(1), 014002 (2018).

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23-е совещание международной коллаборации JEM-EUSO 28.06.2018

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International symposium on Ultra-High-Energy Cosmic Rays, UHECR2018


This UHECR workshop will cover recent results from UHECR observations and theoretical developments as well as future plans.  The symposium will focus on the highest energy cosmic rays as well as cosmic rays at lower energies above 1 PeV, and on multi-messenger approaches.
Review talks by invited speakers and contributions including posters will be presented by experimentalists and theorists in plenary sessions.

UHECR 2018 will take place in the heart of Paris, at “Chimie Paris Tech” Campus (formerly know as the "Ecole Nationale de Chimie Supérieure de Paris ").

Event information is already available on the conference website at

https://indico.in2p3.fr/event/17063 .