The XY Scanner - A Versatile Method of the Absolute End-to-End Calibration of Fluorescence Detectors

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F21%3A73610092" target="_blank" >RIV/61989592:15310/21:73610092 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/22:00552294 RIV/61989592:15310/22:73617368

Result on the web

<a href="https://pos.sissa.it/395/220/pdf" target="_blank" >https://pos.sissa.it/395/220/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22323/1.395.0220" target="_blank" >10.22323/1.395.0220</a>

Result language

angličtina

Original language name

The XY Scanner - A Versatile Method of the Absolute End-to-End Calibration of Fluorescence Detectors

Original language description

One of the crucial detector systems of the Pierre Auger Observatory is the fluorescence detector composed of 27 large-aperture wide-angle Schmidt telescopes. In the past, these telescopes were absolutely calibrated by illuminating the whole aperture with a uniform large-diameter light source. This absolute calibration was performed roughly once every three years, while a relative calibration was performed on a nightly basis. In this contribution, a new technique for an absolute end-to-end calibration of the fluorescence telescopes is presented. For this technique, a portable, calibrated light source mounted on a rail system is moved across the aperture of each telescope instead of illuminating the whole aperture at once. A dedicated setup using a combination of NIST traceable photodiodes to measure the mean intensity and a PMT for pulse-to-pulse stability tracking has been built for the absolute calibration of the light source. As a result of these complementary measurements, the pulse-to-pulse light source intensity can be known to the 3.5% uncertainty level. The analysis of the readout of the PMT camera at each position of the light source together with the knowledge of the light source emission provides an absolute end-to-end calibration of the telescope. We will give a brief overview of this novel calibration method and its current status as well as show preliminary results from the measurement campaigns performed so far.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

P o S - Proceedings of Science

ISBN

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ISSN

1824-8039

e-ISSN

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Number of pages

12

Pages from-to

"220-1"-"220-12"

Publisher name

Scuola Internazionale Superiore di Studi Avanzati

Place of publication

Trieste

Event location

Berlin, Germany online

Event date

Jul 12, 2021

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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