Artyomovsk scintillation detector

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The Artyomovsk scintillation detector (ASD) is a 100-ton scintillation underground detector that was created in the Department of High-Energy Leptons and Neutrino Astrophysics of the Institute of Nuclear Research of the USSR Academy of Sciences in 1969 to study:

1) antineutrino streams from collapsing stars in the Galaxy;

2) the spectrum and interactions of cosmic ray muons with energies up to 10^13 eV.

In addition to these two main tasks, the research program includes:

3) study of hadron fluxes contained in the nuclear cascades generated by muons underground;

4) study of the characteristics of decays of transuranium elements;

5) search for galactic variations of cosmic rays;

6) Study of the angular characteristics of cosmic ray muons;

7) search for atmospheric neutrinos coming from the lower hemisphere.

The experimental conditions require continuous operation of the installation.

The events registered in problems 1), 7) are rare: the estimated frequency of the event is about 0.02-0.2 per year, atmospheric neutrinos are expected to be about 8-10 per year. The counting rate in other problems is higher: the number of muons passing through the installation is 5 sec-1, showers with an energy release of> 80 GeV – 3 h-1, of which about 15% are cascades generated in the inelastic interaction of muons with soil nuclei. The detector is