I. V. Machikhiliyan

Long term remote reactor power and fuel composition monitoring using antineutrinos

I. Alekseev, V. Belov, A. Bystryakov, M. Danilov et autres

Electron antineutrinos are emitted in the decay chains of the fission products inside a reactor core and could be used for remote monitoring of nuclear reactors. The DANSS detector is placed under the core of the 3.1 GW power reactor at the …

Study of polysterene based scintillator ageing in the DANSS experiment

I. Alekseev, V. Belov, A. Bystryakov, M. Danilov et autres

Abstract DANSS is a spectrometer for reactor antineutrinos based on plastic scintillator. The sensitive volume of the detector is made of 2500 polystyrene based scintillator plates with wavelength shifting (WLS) fiber readout (strips). We present a study of the light yield of …

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Effect of Meteorological Parameters on the Cosmic Muon Flux Studied Using the Effective Generation Level Method with the DANSS Detector Data

I. Alekseev, V. Belov, M. Danilov, I. Zhitnikov et autres

The DANSS detector is located directly under the nuclear reactor at the Kalinin nuclear power plant. Such a position ensures about 50 m.w.e. shielding from cosmic rays in the vertical direction; as a result, the detector occupies an intermediate position between surface …

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Observation of the temperature and barometric effects on the cosmic muon flux by the DANSS detector

I. Alekseev, V. Belov, V. Brudanin, A. Bystryakov et autres

Abstract The DANSS detector (Alekseev et al. in JINST 11:P11011, 2016) is located directly below a commercial reactor core at the Kalinin Nuclear Power Plant. Such a position provides an overburden about 50 m.w.e. in vertical direction. In terms of the cosmic …

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Optimized scintillation strip design for the DANSS upgrade

I. Alekseev, V. Belov, A. Bystryakov, M. Danilov et autres

Abstract DANSS is a one cubic meter plastic scintillator detector with a primary goal of sterile neutrino searches at a commercial nuclear reactor. Due to its highly advantageous location, fine segmentation and ability to change the distance to the neutrino production origin, …

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The DANSS Neutrino Spectrometer: the Results of Reactor Antineutrino Studies

I. V. Machikhiliyan

The DANSS neutrino spectrometer has been collecting data for more than four years, detecting reactor antineutrinos by means of the inverse $$\beta $$ -decay (IBD) reaction. The experimental setup is movable being equipped with a lifting device. The analysis of the ratios …

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Calibration and performance of the LHCb calorimeters in Run 1 and 2 at the LHC

A. Alfonso Albero, Y. Amhis, S. Barsuk, C. Beigbeder-Beau et autres

The calibration and performance of the LHCb Calorimeter system in Run 1 and 2 at the LHC are described. After a brief description of the sub-detectors and of their role in the trigger, the calibration methods used for each part of the …

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Industrial Reactor Power Monitoring Using Antineutrino Counts in the DANSS Detector

I. Alekseev, V. Belov, V. Brudanin, G. G. Guzeev et autres

Detection of antineutrino by the reaction of the inverse β -decay can be used for an independent monitoring of a nuclear reactor power. DANSS detector is located directly under a commercial WWER-1000 reactor and counts up to 5000 antineutrino per day, providing …

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Search for sterile neutrinos at the DANSS experiment

I. Alekseev, V. Belov, V. Brudanin, M. Danilov et autres

DANSS is a highly segmented 1 m3 plastic scintillator detector. Its 2500 one meter long scintillator strips have a Gd-loaded reflective cover. The DANSS detector is placed under an industrial 3.1 GWth reactor of the Kalinin Nuclear Power Plant 350 km NW …

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DANSS Neutrino Spectrometer: Detector Calibration, Response Stability, and Light Yield

I. Alekseev, V. Belov, M. Danilov, I. Zhitnikov et autres

Apart from monitoring nuclear reactor parameters, the DANSS neutrino experiment is aimed at searching for sterile neutrinos through a detailed analysis of the ratio of reactor antineutrino spectra measured at different distances from the reactor core. The light collection system of the …

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The Nonuniformity of the Light Yield in Scintillator Strips with Wavelength-Shifting Fibers of the DANSS Detector

I. Alekseev, D. V. Kalinkin, I. V. Machikhiliyan, V. M. Nesterov et autres

The transverse nonuniformity of the light yield in scintillator strips of the DANSS detector was investigated on a test setup that was specially designed for this purpose using proportional chambers with a wire pitch of 1 mm. It is shown that using …

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Digitization of Waveforms from Photosensors of the DANSS Detector

I. Alekseev, D. V. Kalinkin, A. S. Kobyakin, I. V. Machikhiliyan et autres

The detection equipment of the DANSS setup includes 2500 silicon photomultipliers and approximately 100 photomultiplier tubes (PMTs). The system of data acquisition from these photosensors is based on waveform digitization, with which it is possible to simultaneously obtain both amplitude and timing …

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