Scientific Results

Overview of possible optical adapters for EUSO

Year: 2003

Authors: Mazzinghi P., Bratina V., Gambicorti L.

Autors Affiliation: Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy;
Dipartimento di Astronomia, Università di Firenze, Italy;

Abstract: The Extreme Universe Space Observatory-EUSO-is devoted to the exploration from space of the highest energy processes present and accessible in the Universe. The results will extend the knowledge of the extremes of the physical world and address unresolved issued in a number of fields such as fundamental physics, cosmology and astrophysics. Several kind of detectors have been so far proposed for EUSO, all of them requiring some sort of ancillary optics to collect the light from the image produced by the main optics on the focal surface, for an efficient coupling to the detectors. Optical adapters must be selected taking in account several inputs: feasibility, cost, mass budget. Two main options are here investigated: imaging optics (by means of small lenses) and non imaging optics (by means of compound parabolic concentrators). The first kind of focal plane optics is easy and feasible, but it does not guarantee a high concentration ratio. Non imaging optics present much higher efficiency with a concentration close to the theoretical limit, but it also pose new technological difficulties and challenges. This work aims to clarify how this focal plane optics can be made, their limits in terms of concentration of radiation according to the laws of geometrical and physical optics and finally to identify the possible solution to this problem, including available technologies to be used for the construction.

Conference title:
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KeyWords: Astrophysics; Computational geometry; Cosmic rays; Electrons; Imaging systems; Light reflection; Magnetic fields; Optical design; Optimization; Problem solving; Radiation detectors; Silica, Cosmic adapters; Multi-Anode Photo-Multiplier Tube (MAPMT); Non imaging optics, Photomultipliers

Citations: 1
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