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Measurement of air and nitrogen fluorescence light yields induced by electron beam for UHECR experiments

Most of the Ultra High Energy Cosmic Ray (UHECR) experiments and projects (HiRes, AUGER, TA, EUSO, TUS,...) use air fluorescence to detect and measure extensive air showers (EAS). The precise knowledge of the Fluorescence Light Yield (FLY) is of paramount importance for the reconstruction of UHECR....

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Detalles Bibliográficos
Autores principales: Colin, Pierre, Chukanov, A., Grebenyuk, V., Naumov, D., Nedelec, P., Nefedov, Y., Onofre, A., Porokhovoi, S., Sabirov, B., Tkatchev, L.
Lenguaje:eng
Publicado: 2006
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.astropartphys.2006.11.008
http://cds.cern.ch/record/1003176
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author Colin, Pierre
Chukanov, A.
Grebenyuk, V.
Naumov, D.
Nedelec, P.
Nefedov, Y.
Onofre, A.
Porokhovoi, S.
Sabirov, B.
Tkatchev, L.
author_facet Colin, Pierre
Chukanov, A.
Grebenyuk, V.
Naumov, D.
Nedelec, P.
Nefedov, Y.
Onofre, A.
Porokhovoi, S.
Sabirov, B.
Tkatchev, L.
author_sort Colin, Pierre
collection CERN
description Most of the Ultra High Energy Cosmic Ray (UHECR) experiments and projects (HiRes, AUGER, TA, EUSO, TUS,...) use air fluorescence to detect and measure extensive air showers (EAS). The precise knowledge of the Fluorescence Light Yield (FLY) is of paramount importance for the reconstruction of UHECR. The MACFLY - Measurement of Air Cherenkov and Fluorescence Light Yield - experiment has been designed to perform such FLY measurements. In this paper we will present the results of FLY in the 290-440 nm wavelength range for dry air and pure nitrogen, both excited by electrons with energy of 1.5 MeV, 20 GeV and 50 GeV. The experiment uses a 90Sr radioactive source for low energy measurement and a CERN SPS electron beam for high energy. We find that the FLY is proportional to the deposited energy (E_d) in the gas and we show that the air fluorescence properties remain constant independently of the electron energy. At the reference point: atmospheric dry air at 1013 hPa and 23C, the ratio FLY/E_d=17.6 photon/MeV with a systematic error of 13.2%.
id cern-1003176
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2006
record_format invenio
spelling cern-10031762019-09-30T06:29:59Zdoi:10.1016/j.astropartphys.2006.11.008http://cds.cern.ch/record/1003176engColin, PierreChukanov, A.Grebenyuk, V.Naumov, D.Nedelec, P.Nefedov, Y.Onofre, A.Porokhovoi, S.Sabirov, B.Tkatchev, L.Measurement of air and nitrogen fluorescence light yields induced by electron beam for UHECR experimentsAstrophysics and AstronomyMost of the Ultra High Energy Cosmic Ray (UHECR) experiments and projects (HiRes, AUGER, TA, EUSO, TUS,...) use air fluorescence to detect and measure extensive air showers (EAS). The precise knowledge of the Fluorescence Light Yield (FLY) is of paramount importance for the reconstruction of UHECR. The MACFLY - Measurement of Air Cherenkov and Fluorescence Light Yield - experiment has been designed to perform such FLY measurements. In this paper we will present the results of FLY in the 290-440 nm wavelength range for dry air and pure nitrogen, both excited by electrons with energy of 1.5 MeV, 20 GeV and 50 GeV. The experiment uses a 90Sr radioactive source for low energy measurement and a CERN SPS electron beam for high energy. We find that the FLY is proportional to the deposited energy (E_d) in the gas and we show that the air fluorescence properties remain constant independently of the electron energy. At the reference point: atmospheric dry air at 1013 hPa and 23C, the ratio FLY/E_d=17.6 photon/MeV with a systematic error of 13.2%.Most of the Ultra High Energy Cosmic Ray (UHECR) experiments and projects (HiRes, AUGER, TA, EUSO, TUS,...) use air fluorescence to detect and measure extensive air showers (EAS). The precise knowledge of the Fluorescence Light Yield (FLY) is of paramount importance for the reconstruction of UHECR. The MACFLY - Measurement of Air Cherenkov and Fluorescence Light Yield - experiment has been designed to perform such FLY measurements. In this paper we will present the results of FLY in the 290-440 nm wavelength range for dry air and pure nitrogen, both excited by electrons with energy of 1.5 MeV, 20 GeV and 50 GeV. The experiment uses a 90Sr radioactive source for low energy measurement and a CERN SPS electron beam for high energy. We find that the FLY is proportional to the deposited energy (E_d) in the gas and we show that the air fluorescence properties remain constant independently of the electron energy. At the reference point: atmospheric dry air at 1013 hPa and 23C, the ratio FLY/E_d=17.6 photon/MeV with a systematic error of 13.2%.astro-ph/0612110oai:cds.cern.ch:10031762006-12-04
spellingShingle Astrophysics and Astronomy
Colin, Pierre
Chukanov, A.
Grebenyuk, V.
Naumov, D.
Nedelec, P.
Nefedov, Y.
Onofre, A.
Porokhovoi, S.
Sabirov, B.
Tkatchev, L.
Measurement of air and nitrogen fluorescence light yields induced by electron beam for UHECR experiments
title Measurement of air and nitrogen fluorescence light yields induced by electron beam for UHECR experiments
title_full Measurement of air and nitrogen fluorescence light yields induced by electron beam for UHECR experiments
title_fullStr Measurement of air and nitrogen fluorescence light yields induced by electron beam for UHECR experiments
title_full_unstemmed Measurement of air and nitrogen fluorescence light yields induced by electron beam for UHECR experiments
title_short Measurement of air and nitrogen fluorescence light yields induced by electron beam for UHECR experiments
title_sort measurement of air and nitrogen fluorescence light yields induced by electron beam for uhecr experiments
topic Astrophysics and Astronomy
url https://dx.doi.org/10.1016/j.astropartphys.2006.11.008
http://cds.cern.ch/record/1003176
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