Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 100: Cosmic Rays V

T 100.4: Vortrag

Freitag, 4. April 2025, 09:45–10:00, VG 3.102

Detection of Ultra-High-Energy Cosmic Rays using the Next-Generation Prototypes of the Fluorescence-Detector Array of Single-Pixel Telescopes (FAST) — •Marcus Niechciol for the FAST collaboration — Experimentelle Astroteilchenphysik, Center for Particle Physics Siegen, Universität Siegen

Understanding the nature and origin of ultra-high-energy cosmic rays (UHECRs) remains one of the key goals in astroparticle physics. The Fluorescence-detector Array of Single-pixel Telescopes (FAST) is a proposed next-generation cosmic-ray observatory, aimed at observing UHECRs with energies above 10¹⁹ eV with unprecedented statistics. To achieve this, FAST will employ cost-effective, easily deployable, autonomous fluorescence telescopes, each equipped with four photomultiplier tubes with a diameter of 200 mm positioned at the focal plane of a segmented mirror with a diameter of 1.6 m. Currently, there are three prototypes in operation at the Telescope Array Experiment in the Northern hemisphere (Utah, USA) and one in the Southern hemisphere at the Pierre Auger Observatory (Malargüe, Argentina). Together, they enable observations of UHECRs in both hemispheres using the same technology. In the contribution, the current status of observations of UHECRs using the FAST prototypes is summarized. Preliminary results from the data analysis are presented, as well as recent developments towards a mini array of FAST telescopes, to be installed at the Pierre Auger Observatory.

Keywords: Ultra-High-Energy Cosmic Rays; Fluorescence Detectors; FAST