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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:07 |
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Conference: Bucharest University Faculty of Physics 2017 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Nuclear track detectors used for measurement of low energy cosmic rays and muon capture
Authors:
Ana CHIRIACESCU, Ionel LAZANU
Affiliation:
University of Bucharest, Faculty of Physics, POBox MG-11, Bucharest-Magurele, Romania
E-mail
anachiriacescu@gmail.com
ionel.lazanu@g.unibuc.ro
Keywords:
low energy cosmic rays, muons, plastc track detectors
Abstract:
An important information for neutrino experiments is a good measurement of the angular distribution of cosmic rays in the vicinity of the detector, particularly of the muon component as muons represent important sources of radioactive background. Generating directly neutrons or by capture processes, muons produce cosmogenic activations in the bulk of the detector or in its structural elements.
Small arrays of TASTRAK plastic detectors were exposed to cosmic rays for 160 days in two different planes: at 30 degrees inclination in respect to vertical and in a horizontal plane. Track detectors were also used to register charged particles from muon capture in silicon samples exposed to cosmic rays.
The preliminary results are presented and discussed in this contribution. The local terrestrial cosmic ray fluxes expected for this time period were obtained in the frame of PARMA/EXPACS model [1]. This study is a preliminary investigation for a proper understanding of detectors response and for finding optimised measurement and etching methods, as a necessary intermediate step before the start of a systematic study of this energy region of cosmic rays.
References:
[1] Tatsuhiko Sato, (2015) Analytical Model for Estimating Terrestrial Cosmic Ray Fluxes Nearly Anytime and Anywhere in the World: PLoS ONE 10(12): e0144679., doi:10.1371/journal.pone.0144679
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