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Searching for anomalous longitudinal profiles with the FRAM telescope
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SYSNO ASEP 0518134 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Searching for anomalous longitudinal profiles with the FRAM telescope Author(s) Blažek, Jiří (FZU-D) ORCID, RID Article number 01009 Source Title EPJ Web of Conferences, 144. - Les Ulis : EDP Sciences, 2017 / Trávníček P. ; Prouza M. ; Gaug M. ; Keilhauer B. - ISSN 2100-014X Pages s. 1-4 Number of pages 4 s. Publication form Online - E Action International Workshop on ATmospheric MOnitoring for High Energy Astroparticle Detectors (AtmoHEAD) Event date 12.09.2016 - 14.09.2016 VEvent location Olomouc Country CZ - Czech Republic Event type WRD Language eng - English Country FR - France Keywords FRAM ; anomalous showers ; hadronic interactions ; atmospheric monitoring Subject RIV BF - Elementary Particles and High Energy Physics OECD category Particles and field physics R&D Projects LM2015038 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LG15014 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA14-17501S GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 UT WOS 000407742000009 EID SCOPUS 85021657544 DOI 10.1051/epjconf/201714401009 Annotation The study of anomalous longitudinal profiles of extensive air showers presents an interesting opportunity to gain additional insight about the character of hadronic interactions at the highest energies. Moreover, the presence of such profiles would represent direct evidence of a light component in the primary cosmic rays of a given energy, independently of hadronic interaction models. The ratio of profiles observed to have a “double bump” structure (with two clearly distinguishable atmospheric depths of maximum particle count) compared to the total number of events can moreover be used to test the predictions of interaction models. However, the majority of such profiles observed at the Pierre Auger Observatory are caused by clouds. Here we describe a method of rapid monitoring of particularly interesting cosmic ray events, using the F/Photometric Rapid At-mospheric Monitor (FRAM) telescope to identify events with clear, cloudless atmospheric background. Thefunction of FRAM is described in detail and the number of triggered events is presented. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2020
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