Searching for anomalous longitudinal profiles with the FRAM telescope

0518134 - FZÚ 2020 RIV FR eng C - Conference Paper (international conference)
Blažek, Jiří
Searching for anomalous longitudinal profiles with the FRAM telescope.
EPJ Web of Conferences. Vol. 144. Les Ulis: EDP Sciences, 2017 - (Trávníček, P.; Prouza, M.; Gaug, M.; Keilhauer, B.), s. 1-4, č. článku 01009. ISSN 2100-014X.
[International Workshop on ATmospheric MOnitoring for High Energy Astroparticle Detectors (AtmoHEAD). Olomouc (CZ), 12.09.2016-14.09.2016]
R&D Projects: GA MŠMT LM2015038; GA MŠMT LG15014; GA ČR(CZ) GA14-17501S
Institutional support: RVO:68378271
Keywords : FRAM * anomalous showers * hadronic interactions * atmospheric monitoring
OECD category: Particles and field physics

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.
Permanent Link: http://hdl.handle.net/11104/0304499