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Cosmic ray oriented performance studies for the JEM-EUSO first level trigger
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-1153-2139
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-0406-0962
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Number of Authors: 3652017 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, E-ISSN 1872-9576, p. 150-163Article in journal (Refereed) Published
Abstract [en]

JEM-EUSO is a space mission designed to investigate Ultra-High Energy Cosmic Rays and Neutrinos (E > 5.10(19) eV) from the International Space Station (ISS). Looking down from above its wide angle telescope is able to observe their air showers and collect such data from a very wide area. Highly specific trigger algorithms are needed to drastically reduce the data load in the presence of both atmospheric and human activity related background light, yet retain the rare cosmic ray events recorded in the telescope. We report the performance in offline testing of the first level trigger algorithm on data from JEM-EUSO prototypes and laboratory measurements observing different light sources: data taken during a high altitude balloon flight over Canada, laser pulses observed from the ground traversing the real atmosphere, and model landscapes reproducing realistic aspect ratios and light conditions as would be seen from the ISS itself. The first level trigger logic successfully kept the trigger rate within the permissible bounds when challenged with artificially produced as well as naturally encountered night sky background fluctuations and while retaining events with general air-shower characteristics.

Place, publisher, year, edition, pages
Elsevier, 2017. p. 150-163
Keywords [en]
JEM-EUSO; Trigger system; FPGA; Nightglow background
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-214415DOI: 10.1016/j.nima.2017.05.043ISI: 000407863700020Scopus ID: 2-s2.0-85021224738OAI: oai:DiVA.org:kth-214415DiVA, id: diva2:1140901
Note

QC 20170913

Available from: 2017-09-13 Created: 2017-09-13 Last updated: 2017-09-13Bibliographically approved

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Capel, FrancescaCarlson, PerFuglesang, Christer

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Capel, FrancescaCarlson, PerFuglesang, ChristerLarsson, O.
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Particle and Astroparticle PhysicsKTH
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Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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