Spectral calibration of the fluorescence telescopes of the Pierre Auger observatory

0484992 - FZÚ 2018 RIV NL eng J - Journal Article
Aab, A. - Abreu, P. - Aglietta, M. - Blažek, Jiří - Boháčová, Martina - Chudoba, Jiří - Ebr, Jan - Juryšek, Jakub - Mandát, Dušan - Palatka, Miroslav - Pech, Miroslav - Prouza, Michael - Řídký, Jan - Schovánek, Petr - Trávníček, Petr - Vícha, Jakub … Total 404 authors
Spectral calibration of the fluorescence telescopes of the Pierre Auger observatory.
Astroparticle Physics. Roč. 95, Oct (2017), s. 44-56. ISSN 0927-6505. E-ISSN 1873-2852
R&D Projects: GA MŠMT LM2015038; GA MŠMT LG15014; GA MŠMT EF16_013/0001402
Grant - others:OP VVV - AUGER-CZ(XE) CZ.02.1.01/0.0/0.0/16_013/0001402
Institutional support: RVO:68378271
Keywords : Auger observatory * nitrogen fluorescence * extensive air shower * calibration
OECD category: Particles and field physics
Impact factor: 3.203, year: 2017

We present a novel method to measure precisely the relative spectral response of the fluorescence telescopes of the Pierre Auger Observatory. We used a portable light source based on a xenon flasher and a monochromator to measure the relative spectral efficiencies of eight telescopes in steps of 5 nm from 280 nm to 440nm. Each point in a scan had approximately 2nm FWHM out of the monochromator. Different sets of telescopes in the observatory have different optical components, and the eight telescopes measured represent two each of the four combinations of components represented in the observatory. We made an end-to-end measurement of the response from different combinations of optical components, and the monochromator setup allowed for more precise and complete measurements than our previous multi-wavelength calibrations. We find an overall uncertainty in the calibration of the spectral response of most of the telescopes.

Permanent Link: http://hdl.handle.net/11104/0280126