The integrated radon monitoring system is highly customizable to operate in different run modes at scheduled times and can be controlled remotely to sample radon in ambient air or in water from the water pools where the antineutrino detectors are being housed. This is achieved by using a large radon progeny collection chamber, semiconductor α-particle detector with high energy resolution, improved electronics and software. 5% at 25 Â☌) with radon concentration as low as 50 Bq/m 3. H 3 is able to measure radon concentration with a statistical error less than 10% in a 1-h measurement of dehumidified air (R.H.
#NYATAKAN PERSAMAAN HUKUM NEWTON II DALAM KOORDINAT POLAR PORTABLE#
We developed a highly sensitive, reliable and portable automatic system (H 3 ) to monitor the radon concentration of the underground experimental halls of the Daya Bay Reactor Neutrino Experiment. The radon monitoring system in Daya Bay Reactor Neutrino ExperimentĬhu, M.C. All of these results extend the limits of our knowledge in their respective areas and thus shed new light on neutrinos and the physics that surround them. This talk will present three sets of results that have just recently been released by the Daya Bay Collaboration: (i) a precision measurement of the oscillation parameters that drive the disappearance of electron antineutrinos at short baselines, (ii) a search for sterile neutrino mixing, and (iii) a high-statistics determination of the absolute flux and spectrum of reactor-produced electron antineutrinos. The Daya Bay Reactor Neutrino Experiment in China consists of eight identical detectors placed underground at different baselines from three groups of nuclear reactors, a configuration that is ideally suited for studying the properties of these elusive particles. Latest Results from the Daya Bay Reactor Neutrino ExperimentĪmong all the fundamental particles that have been experimentally observed, neutrinos remain one of the least understood. The most recent results from Daya Bay are discussed in this paper, as well as the current status and future prospects of the experiment. Daya Bay can also perform a number of other precise measurements, such as a high-statistics determination of the absolute reactor antineutrino flux and spectrum, as well as a search for sterile neutrino mixing, among others. Daya Bay is able to greatly improve the precision on θ 13 and to make an independent measurement of the effective mass splitting in the electron antineutrino disappearance channel. 2011, the experiment has been running stably for more than 4 years, and has collected the largest reactor anti-neutrino sample to date. The experiment consists of eight functionally identical detectors placed underground at different baselines from three pairs of nuclear reactors in South China. The Daya Bay Reactor Neutrino Experiment was designed to measure θ 13, the smallest mixing angle in the three-neutrino mixing framework, with unprecedented precision. In this paper, the layout of the experiment, the design and fabrication progress of the detectors, and some highlighted nuclear detecting techniques developed in the detector R and D are introduced. Daya Bay neutrino detector is an underground large nuclear detector of low background, low energy, and high precision. Three years' data taking will reach the designed the precision, to determine sin 2 2θ 13 to better than 0.01.
The detectors of Daya Bay is under construction now. The precise measurement has very important physics significance. Its magnitude is a roadmap of the future neutrino physics, and very likely related to the puzzle of missing antimatter in our universe. θ 13 is one of two unknown fundamental parameters in neutrino mixing. The experiment aims to precisely determine the neutrino mixing angle θ 13 by detecting the neutrinos produced by the Daya Bay Nuclear Power Plant. International Nuclear Information System (INIS)ĭaya Bay Reactor Neutrino Experiment is a large international collaboration experiment under construction.
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