from 27 February 2017 to 3 March 2017
Budker Institute of Nuclear Physics
Asia/Novosibirsk timezone
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Contribution Contributed Oral

Instrumentation for Astroparticle and Neutrino physics

Cluster type EAS array of the NEVOD experimental complex

Speakers

  • Mr. Ivan SHULZHENKO

Primary authors

  • Mr. Ivan SHULZHENKO (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))

Co-authors

  • Dr. Mikhail AMELCHAKOV (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
  • Dr. Rostislav KOKOULIN (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
  • Dr. Konstantin KOMPANIETS (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
  • Mr. Oleg LIKIY (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
  • Mr. Vyacheslav OVCHINNIKOV (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
  • Prof. Anatoly PETRUKHIN (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
  • Prof. Oscar SAAVEDRA (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Dipartimento di Fisica dell’ Università degli Studi di Torino)
  • Dr. Igor YASHIN (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
  • Mr. Nickolay AMPILOGOV (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
  • Mr. Ivan ASTAPOV (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
  • Dr. Natalya BARBASHINA (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
  • Dr. Aleksey BOGDANOV (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
  • Prof. Andrea CHIAVASSA (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Dipartimento di Fisica dell’ Università degli Studi di Torino, Sezione di Torino dell’ Istituto Nazionale di Fisica Nucleare - INFN)
  • Dr. Dmitriy GROMUSHKIN (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
  • Mr. Nikita KAMLEV (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))
  • Dr. Semen KHOKHLOV (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))

Content

A new NEVOD-EAS array for detection of extensive air showers (EAS) in the energy range $10^{15}-10^{17} eV$ is being created in MEPhI (Moscow, Russia) on the basis of the Experimental Complex NEVOD. It will operate in conjunction with the Cherenkov Water Detector NEVOD and coordinate detector DECOR, as well as with detectors URAN and TREK which are now being constructed. The array will allow determining of the size, axis position and arrival direction of EAS registered by aforementioned installations of the experimental complex.

Since the NEVOD-EAS array is being created at the densely built territory and detecting elements cannot be deployed in the same plane like in usual shower arrays, its registering system is organized in a cluster principle, and a newly developed cluster approach is used for experimental data analysis. Each cluster of the shower array is an independent system which includes 16 scintillation counters of EAS electron-photon component combined in 4 detector stations (DS) and registering electronics. Cluster electronics performs digitizing of analog signals, selection of local events according to intra-cluster triggering conditions, time-stamping of local events and monitoring of cluster operational parameters. Information on local events and operational parameters is transferred to the central DAQ post of control and synchronization of all clusters. Local events from different clusters are then combined according to their timestamps.

In 2015-2016, the central part of the NEVOD-EAS array was created and launched into operation. It includes 4 clusters located at different altitudes at area of $10^{4} m^{2}$ around the complex. Test and experimental runs carried out at the central part of the array have proved the possibility of using such cluster approach to registering system organization and experimental data analysis.

The features of the distributed cluster type registering system of the NEVOD-EAS shower array, as well as the cluster approach to experimental data analysis are discussed. The main characteristics of clusters and their elements are presented.