July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Local density spectra of electron and muon EAS components in primary energy range from 10^14 to 10^18 eV

Jul 30, 2015, 3:30 PM
1h
Amazon Foyer (World Forum)

Amazon Foyer

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 232
Poster contribution CR-EX Poster 1 CR

Speaker

Mr Mikhail Amelchakov (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))

Description

The system of calibration telescopes (SCT) of the Cherenkov water detector (CWD) NEVOD is used as a shower array. SCT consists of two planes (80 m^2) with 40 scintillation counters (40×20×2 cm^3) in each. One plane is located on the roof of the CWD, and another one on its bottom. The distance between two planes is 9.45 m. Each registration channel of SCT is able to evaluate the counter response amplitude in the range from ~1 to ~50 relativistic particles, which corresponds to electron densities up to ~500 particles/sq.m. The triggering system identifies three types of events in SCT. The telescope trigger allows selecting muon tracks for calibration of the CWD photomultipliers and scintillation counters themselves. Other two triggers provide registration of the multiparticle events in each plane of SCT. The top plane is used as a detector of electron component of EAS, and the bottom one provides registration of the EAS muon bundles. The technique of EAS investigations with the SCT is based on the phenomenology of local density of charged particles because each plane of the setup has an area much less than transverse sizes of EAS. We have measured the spectrum of charged particle local density in the range from 0.5 to 200 m^-2 with the top plane, and the spectrum of local muon density in the range from 0.2 to 56 m^-2 with the bottom plane. Comparison with EAS simulations shows that the primary particle energy range which can be investigated with the SCT extends from 10^14 to 10^18 eV. This energy range includes the interval of 10^14−10^15 eV which is still insufficiently studied both in satellite and EAS experiments.
Registration number following "ICRC2015-I/" 51
Collaboration -- not specified --

Primary author

Mr Mikhail Amelchakov (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))

Co-authors

Dr Alexey Bogdanov (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)) Prof. Anatoly Petrukhin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)) Prof. Igor Yashin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)) Mr Ivan Shulzhenko (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)) Prof. Rostislav Kokoulin (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)) Dr Semen Khokhlov (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))

Presentation materials