| Naslov: | A novel tool for the absolute end-to-end calibration of fluorescence telescopes : the XY-scanner |
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| Avtorji: | ID Schäfer, Christoph (Avtor)
ID Filipčič, Andrej (Avtor)
ID Lundquist, Jon Paul (Avtor)
ID Shivashankara, Shima Ujjani (Avtor)
ID Stanič, Samo (Avtor)
ID Vorobiov, Serguei (Avtor)
ID Zavrtanik, Danilo (Avtor)
ID Zavrtanik, Marko (Avtor), et al. |
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| Datoteke: |  ICRC2023_305.pdf (5,33 MB)
MD5: 661DAA461E58350C980DE78ED207874A
 https://pos.sissa.it/444/
https://pos.sissa.it/444/305/pdf
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Neznano |
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| Tipologija: | 1.08 - Objavljeni znanstveni prispevek na konferenci |
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| Organizacija: | UNG - Univerza v Novi Gorici
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| Opis: | The Pierre Auger Observatory uses 27 large-aperture wide-angle Schmidt telescopes to measure the longitudinal profile of air showers using the air-fluorescence technique. Up to the year 2013, the absolute calibration of the telescopes was performed by mounting a uniform large-diameter light source on each of the telescopes and illuminating the entire aperture with a known photon flux. Due to the high amount of work and person-power required, this procedure was only carried out roughly once every three years, and a relative calibration was performed every night to track short-term changes. Since 2013, only the relative calibration has been performed. In this paper, we present a novel tool for the absolute end-to-end calibration of the fluorescence detectors, the XY-Scanner. The XY-Scanner uses a portable integrating sphere as a light source, which has been absolutely calibrated. This light source is installed onto a motorized rail system and moved across the aperture of each telescope. We mimic the illumination of the entire aperture by flashing the light source at ∼1700 positions evenly distributed across the telescope aperture. For the absolute calibration of the light source, we built a dedicated setup that uses a NIST-calibrated photodiode to measure the average photon flux and a PMT to track the pulse-to-pulse stability. We present the laboratory setups used to study the characteristics of the employed light sources and discuss
the inter-calibration between selected telescopes. |
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| Ključne besede: | ultra-high energy cosmic rays, Pierre Auger Observatory, fluorescence detectors, longitudinal profile |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Datum objave: | 01.01.2023 |
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| Leto izida: | 2023 |
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| Št. strani: | str. 1-13 |
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| PID: | 20.500.12556/RUNG-8790  |
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| COBISS.SI-ID: | 182067459 |
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| UDK: | 52 |
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| ISSN pri članku: | 1824-8039 |
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| DOI: | 10.22323/1.444.0305 |
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| NUK URN: | URN:SI:UNG:REP:DIN3LQPC |
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| Datum objave v RUNG: | 23.01.2024 |
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| Število ogledov: | 1823 |
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| Število prenosov: | 7 |
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| Metapodatki: |    |
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