Abstract
The paper is devoted to the description of the iDREAM
detector and its systems. iDREAM is a prototype detector designed to
demonstrate the feasibility of antineutrino detectors for remote
...reactor monitoring and safeguard purposes. Antineutrinos are
detected with a 1 ton liquid scintillator via inverse beta decay on
protons. In order to suppress cosmic muons, gamma and neutron
background, the detector is housed in a dedicated shielding. The
detector is installed at the Kalinin nuclear power plant (Russia),
20 m from the 3 GW
th
reactor core.
The technology of preparing a linear-alkylbenzene-based gadolinium-doped liquid organic scintillator (Gd-LOS) as a target material in reactor antineutrino detectors has been developed. Results of ...longterm measurements of the light yield of Gd-LOS in contact with acryl and stainless steel are presented, which confirm the compatibility of Gd-LOS with these materials. The measurements were performed for two otherwise identical LOS detectors only differing in wall materials of the sensitive volume: acryl versus stainless steel. The results of measurements over about one year showed almost the same, relatively small decreases in the light yield of both detectors. It is concluded that both structural materials can be used in detector parts contacting with Gd-doped scintillator. Such a long-term parallel comparative test was carried out for the first time.
The iDREAM (industrial Detector for reactor antineutrino monitoring) project is aimed at remote monitoring of the operating modes of the atomic reactor on nuclear power plant to ensure a technical ...support of IAEA non-proliferation safeguards. The detector is a scintillator spectrometer. The sensitive volume (target) is filled with a liquid organic scintillator based on linear alkylbenzene where reactor antineutrinos will be detected via inverse beta-decay reaction. We present first results of laboratory tests after physical launch. The detector was deployed at sea level without background shielding. The number of calibrations with radioactive sources was conducted. All data were obtained by means of a slow control system which was put into operation.
Reactor antineutrino detector iDREAM Gromov, M B; Lukyanchenko, G A; Novikova, G J ...
Journal of physics. Conference series,
09/2017, Letnik:
888, Številka:
1
Journal Article
Recenzirano
Odprti dostop
Industrial Detector for Reactor Antineutrino Monitoring (iDREAM) is a compact (≈ 3.5m2) industrial electron antineutrino spectrometer. It is dedicated for remote monitoring of PWR reactor operational ...modes by neutrino method in real-time. Measurements of antineutrino flux from PWR allow to estimate a fuel mixture in active zone and to check the status of the reactor campaign for non-proliferation purposes. LAB-based gadolinium doped scintillator is exploited as a target. Multizone architecture of the detector with gamma-catcher surrounding fiducial volume and plastic muon veto above and below ensure high efficiency of IBD detection and background suppression. DAQ is based on Flash ADC with PSD discrimination algorithms while digital trigger is programmable and flexible due to FPGA. The prototype detector was started up in 2014. Preliminary works on registration Cerenkov radiation produced by cosmic muons were established with distilled water inside the detector in order to test electronic and slow control systems. Also in parallel a long-term measurements with different scintillator samples were conducted.
The stability of a liquid organic scintillator based on linear alkylbenzene in a volume of 1 m
3
was measured. The measurements were performed using an iDREAM reactor antineutrino detector at the ...National Research Center Kurchatov Institute. No systemic degradation of the scintillator light yield within an observation time of 225 days was observed. These long-term stability measurements of a large-volume liquid organic scintillator based on linear alkylbenzene are the first in Russia.
Prototype of industrial reactor antineutrino detector iDREAM is dedicated for an experiment to demonstrate the possibility of remote monitoring of PWR reactor operational modes by neutrino method in ...real-time in order to avoid undeclared exposure modes for nuclear fuel and unauthorized removal of isotopes. The prototype detector was started up in 2014. To test the detector elements and components of electronics distilled water has been used as a target, which enables the use of Cerenkov radiation from cosmic muons as a physical signal. Also parallel measuring of the long-term stability has been doing for samples of liquid organic scintillator doped with gadolinium and synthesized by different methods
Various applications of neutrinos are currently a subject of widespread discussions. One of the options considered is to use neutrinos to monitor nuclear reactor cores and oversee nonproliferation of ...fissile materials. IDREAM is a prototype of the detector designed to register antineutrinos from the reactor core using the inverse beta decay. The detector target is 1 ton of liquid scintillator based on gadolinium-doped linear alkyl benzene. The detector was installed at the Kalinin nuclear power plant (Russia) at a distance of ~20 m from the core. IDREAM started taking data in spring 2021. A description of the detector is presented and the results of the measurements of background conditions at the experiment site are discussed.
The stability of a liquid organic scintillator based on linear alkylbenzene in a volume of 1 m{sup 3} was measured. The measurements were performed using an iDREAM reactor antineutrino detector at ...the National Research Center Kurchatov Institute. No systemic degradation of the scintillator light yield within an observation time of 225 days was observed. These long-term stability measurements of a large-volume liquid organic scintillator based on linear alkylbenzene are the first in Russia.
Belyaev et al discuss the the use of helicopter-borne neutron detectors in detecting nuclear warheads in the USSR-US Black Sea Experiment, which took place on July 5, 1989. The system detects ...neutrons emitted from the spontaneous fission of the plutonium-240 contained as an impurity in weapon plutonium. Details are presented.
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