Progress towards stereo observation of ultra-high-energy cosmic rays with Fluorescence detector Array of Single-pixel Telescopes
Ultra-high-energy cosmic rays (UHECRs) are the most energetic particles ever detected. Cosmic rays that achieve the highest energies are rare, and their flux at Earth is extremely low. As a result, next-generation experiments with large effective areas are required and under development. The Fluorescence detector Array of Single-pixel Telescopes (FAST) is one such project. Although observation time is limited compared with ground particle detectors, it enables direct measurements of $X_\mathrm{max}$, a crucial parameter sensitive to the primary cosmic-ray composition. FAST will achieve large-area coverage by significantly reducing the cost of telescopes. This necessitates a simplified telescope compared to conventional designs. Demonstrating the feasibility of our telescope and observational method is essential. To validate the FAST concept, prototype telescopes have been deployed at the Pierre Auger Observatory and the Telescope Array experiment.
Authors
- J. N. Matthews (ORCID: https://orcid.org/0000-0001-6940-5637)
- Dušan Mandát (ORCID: https://orcid.org/0000-0001-7748-7468)
- Justin M. Albury (ORCID: https://orcid.org/0000-0003-2758-1397)
- Kenta Terauchi
- John Farmer (ORCID: https://orcid.org/0000-0002-6758-2127)
- M. Hrabovský (ORCID: https://orcid.org/0000-0003-4223-7316)
- F. Salamida (ORCID: https://orcid.org/0000-0002-9306-8447)
- P. Trávnı́ček (ORCID: https://orcid.org/0000-0002-1655-9584)
- P. Hamal (ORCID: https://orcid.org/0000-0003-3139-7234)
- Hiroki Namba (ORCID: https://orcid.org/0000-0003-0653-1040)
- L. Chytka (ORCID: https://orcid.org/0000-0001-5741-259X)
- Martin Vacula (ORCID: https://orcid.org/0000-0003-4844-3962)
- M. Malacari
- A. Taketa (ORCID: https://orcid.org/0000-0001-6936-4118)
- M. Palatka (ORCID: https://orcid.org/0000-0003-2061-6059)
- Fraser Bradfield
- Toshihiro Fujii (ORCID: https://orcid.org/0000-0003-2401-504X)
- Zuzana Svozilikova (ORCID: https://orcid.org/0000-0001-5210-0781)
- M. Pech (ORCID: https://orcid.org/0000-0002-8421-0456)
- Shunsuke Sakurai (ORCID: https://orcid.org/0000-0002-0465-3274)
- Jakub Kmec (ORCID: https://orcid.org/0000-0003-0956-1114)
- Daniel Staník
- Hiromu Nagasawa
- Radomir Šmída (ORCID: https://orcid.org/0000-0003-0122-1123)
- Jose A. Bellido (ORCID: https://orcid.org/0000-0002-0833-9194)
- Paolo Privitera (ORCID: https://orcid.org/0000-0002-0623-9261)
- Stanislav Michal (ORCID: https://orcid.org/0000-0001-6563-1573)
- Marcus Niechciol (ORCID: https://orcid.org/0000-0001-6823-8056)
- Massimo Mastrodicasa (ORCID: https://orcid.org/0000-0002-9344-0050)
- J. Kvita (ORCID: https://orcid.org/0000-0001-5973-8729)
- Pavel Horváth (ORCID: https://orcid.org/0000-0002-6710-5339)
- Vlastimil Jílek (ORCID: https://orcid.org/0000-0001-5774-7285)
- Stan Thomas
- Libor Nožka
- Petr Schovánek (ORCID: https://orcid.org/0000-0002-5344-7645)
Publication Details
- Published
- 2025-09-24
- DOI
- https://doi.org/10.22323/1.501.0380
- Primary Topic
- Particle Detector Development and Performance
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- University of Chicago
- Grantová Agentura České Republiky
- Akademie Věd České Republiky
- Japan Society for the Promotion of Science
- Institute for Cosmic Ray Research, University of Tokyo