High-level state-made eye hunt production of neutrinos
The country's first 20-inch new pv multiplication line is activated
On 25 november, the co-operative group for the development of large-area photo-ray multipliers, led by the institute of high energy physics of the chinese academy of sciences, announced that the country's first production line, 20-inch micro-channel-based photo-multipliers, produced 7,500 items per year, had been completed. Over the next two years, the china armaments industries group, northern night-vision technology, inc., will provide 15,000 products for the strategic lead technology at the chinese academy of science and technology, the jiangmen neutrino experiment。
The construction and operation of this production line will mark the official entry into the mass production phase of a new 20-inch photovoltaic multiplication tube, which will not only serve as an example of organic integration in production, but will also serve as a solid basis for the country's re-emergence in the field of neutron experiments。
Local features of pv-multiplier tubes (for high energy physics at the central college)
Meteoroids are invisible and involved in weak interactions, and even interaction with liquid scintillation produces very few photons and is extremely difficult to detect. In order to detect neutrons, very weak light detection techniques, i. E. Photo-multiplier technology, are needed to detect faint light signals with very high sensitivity and super-fatal time responses, such as hunters' sharp hunting eyes。
"the 20-inch photomultiplier tube represents the highest technological level of the photomultiplier tube." wang mufang, director of the high energy physics institute of the chinese academy of sciences, told the reporter of the chinese journal of science that pvp is a key generic component of particle physics and nuclear physics experiments, whose main function is to convert light signals to telecommunications。
Efficiencies of the empirical neo-microscope in jiangmen
Journalists learned that, in 2008, when high-power came up with the idea of the second phase of the neutrino experiment in greater asia bay (now known as the jiangmen neutrino experiment), international commercial product technology was unable to meet the test requirements and the cost of relying on foreign companies for research and development remained high. More than 2,000 8-inch photomultiplier tubes used in neutron experiments in the greater gulf were purchased from japan by united states collaborators。
In this context, the high-powered middle school decided to initiate the pre-construction of a new pv multiplication tube and hoped for nationalization. At the end of 2011, led by high-power, the northern night-vision technology corporation ltd., the sian institute of optical precision machinery of the chinese academy of sciences, china nuclear control systems inc. And nanjing university formed a collaborative group。
Scientists are testing photo-multiplier tubes
Over a four-year period, the cooperative team managed to overcome a number of technical difficulties, such as high quantum efficiency photocathode preparation technologies, micro-channel panels, large-scale housing, and vacuum-photo-electronic device sealing techniques, and eventually to develop internationally advanced prototypes of key technology indicators such as quantum efficiency, collection efficiency and single-photogram electron valley ratio, with full autonomous intellectual property rights, which greatly enhanced the innovative capacity and international competitiveness of domestic firms in ultra-large electrical vacuum units。
Journalists were informed that the installation of pvps was planned to begin at the end of 2018 and that data collection for mtes was expected to commence around 2020。
