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China's pursuit of cosmic rays
The Chinese scientists are constructing a cosmic ray observation station on an area equivalent to 200 soccer fields in China's southwest Sichuan Province, 4,400 meters above sea level.
Beijing, IANS: The Chinese scientists are constructing a cosmic ray observation station on an area equivalent to 200 soccer fields in China's southwest Sichuan Province, 4,400 meters above sea level.
Huge rocks left from the Ice Age have been blasted. Different detectors are being installed to form a huge "net" to catch the particles generated by cosmic rays in the atmosphere, to help scientists study both the micro and the macro worlds in the universe, reported Xinhua news agency. Three huge underground pools, more than triple the size of the Water Cube (National Aquatic Centre) in Beijing, will hold detectors to collect high-energy photons generated by remote celestial bodies.
Besides the pools, 12 telescopes will be erected to conduct high-precision measurement of cosmic rays with the highest energy.
Construction of the first half of the observation station, known as Large High-Altitude Air Shower Observatory (LHAASO), is due to be finished at the end of this year, and the whole project completed at the end of 2020, said Cao Zhen, chief scientist of LHAASO and a researcher at the Institute of High Energy Physics (IHEP) of the Chinese Academy of Sciences.
The main objective of LHAASO is to search for the origin of cosmic rays, and study their acceleration and transmission mechanisms, said Cao.
In the second huge pool of LHAASO, which is 5 meters below ground, water Cherenkov detectors have been installed to form an array, and they will be submerged in 100,000 tonnes of the purest water in the world.
"The water comes from nearby lakes and rivers and has gone through strict purification. Only transparent pure water can make the detectors catch the signals generated by high-energy particles clearly," said Chen Mingjun, deputy director of the Cherenkov detector array.
He said the LASSO project has drawn world attention. Scientists from Russia, Switzerland, Poland, the Czech Republic and other countries hope to bring their scientific equipment to the observatory. Research teams from Australia and Thailand and other countries will participate in the project directly. Some well-known international research teams expressed the desire to conduct cooperation and joint observation with LHASSO, said Cao.
