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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:08 |
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Conference: Bucharest University Faculty of Physics 2017 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Cosmic ray measurements using WILLI setup
Authors:
Alexandru BALACEANU
*
Affiliation:
1)Faculty of Physics University of Bucharest
2)NIPNE-RO
E-mail
Keywords:
Abstract:
The WILLI-AIR (Weal Ionization Lead Lepton Interaction for Air-shower Investi-
gations in Romania) experiment is developed to investigate charged particle that
arrive on Earth.These particles are the result of cosmic particles interactions in the external layersof the atmosphere. After the primary collision the resulted charged particles are flying towards the grownd, colliding new atoms and so developing what is called air shower.This experiment is focused on measuring muons, and in particularry the ratio between positive muons and the negative one inside the extensive air shower.Their energy of the primary particles is around the value of 10^15 eV. The detection area is small in comparison with experiments such as CASCADE GRANDE or Pierre Auger Observatory. The detection system contain
a number of 48 individual detectors and one electromagnetic calorimeter with 20
layers.Each stations will contain two pices of 0.5m^2 scintillator read-out individually by one photo-multiplier. The surface of the experiment is correlated with the energy of the primary particle and covers around 1000m^2, with empty areas between the detectors. Near these stations is placed an electromagnetic calorimeter for measuring the muon charge ratio.
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