from 24 February 2014 to 1 March 2014
Asia/Novosibirsk timezone
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Contribution Poster

Detectors for Astrophysics and Neutrino Physics

The array for the detection of the neutron component of extensive air showers

Speakers

  • Dmitry GROMUSHKIN

Primary authors

Abstract content

The idea of the array consists in registration of delayed thermal neutrons generated by hadronic component of extensive air showers (EAS). The array includes 32 en-detectors deployed over the area of 450 m². En-detectors are able to detect two main EAS components: electromagnetic one in the case of a group passage of charged particles (e), and hadron component through thermal neutrons (n). Detectors are based on specialized inorganic scintillator, which represents a granulated alloy of powder-based ZnS (Ag) doped with LiF, being enriched up to 90% by 6Li isotope. The array is triggered by the electromagnetic component of EAS, and provides information about the delayed neutrons accompanying the EAS within 20 ms after the trigger. During 1.5 years of operation more than 10⁵ events were registered. The analysis of obtained information on hadronic and electromagnetic components of the EAS has been performed. Examples of EAS registration and results on temporal and lateral distributions of detected thermal neutrons are given.