According to the US Fun Science website reported on October 18, Chinese scientists are building the world's largest "ghost particle" detector in the world at 11,500 feet (about 3500 meters) below the sea.
It is reported that in the Sea bed of the Western Pacific Ocean, the deep -seas in the deep sea telescope will be built, that is, the "Sea Bell" telescope.After completion around 2030, it will be able to search for rare light emitted by difficult particles.These particles will be perceived briefly in the deep sea.
A person's body is about 100 billion per square centimeters per second, "ghost particles" known as neutrinos.However, neutrinos are not charged, the quality is very small, and it is hardly interacted with other substances.
But by regulating neutrinos, physicists can trace the origin of some particles back to the long -term, catastrophic star explosion and galaxy collision.
The "Sea Bell Project" is born.
According to reports, Xu Donglian, chief scientist of the "Hairi Plan", said at a press conference on October 10: "'Sea Bells' telescope will be shielded by the entire earth, receiving penetration across the planet, andThe neutrinos who came, because it is located near the equator, the 'Hairu' telescope can detect the 360 -degree full -day neutron through the earth's rotation to achieve no dead angle observation of the neutrinos in different directions. "
Microcons are everywhere -they are the second largest particles in the entire universe, second only to photons.In the operation of the nuclear reaction, the outbreak of the supernova, the cosmic ray and radioactive decay, the particle accelerators on the earth and the nuclear reactor, etc., a large number of neutrinos will be released.
Although neutrinos are everywhere, their interaction with material is very weak and difficult to detect.In 1956, the scientist first detected the neutrinos issued by the reactor, and then many neutron detection experiments discovered that the sun continued to launch a lot to the earth in large quantities, but this kind of continuous launch covered the cosmic rays to the earth atmosphere.The rare neutrinos are generated.The origin of cosmic rays is still a mystery.
Neutonal microons can hardly pass through most of the substances -including our entire planet, but they occasionally interact with water molecules.When neutrinos pass through water or ice, they sometimes produce μ mesh, and μ mesh will glow.By studying these luminous laws, scientists can rebuild the energy of neutrinos, and sometimes they can reproduce their origin.
But in order to increase the possibility of the interaction of "ghost particles", the detector must be under a large amount of water or ice.
China's new giant detector will consist of 1,200 vertical cables. Each cable is 2300 feet (about 700 meters) per line, and it will be equipped with 24,000 high -resolution optical detection balls in total.
The entire array diameter of the detector is 2.5 miles (about 4 kilometers).When it is put into operation, the volume of seawater volume that can monitor high -energy medium -micro -reactions is 1.7 cubic miles (about 7.5 cubic kilometers).At present, the monitoring volume of the world's largest neutron detector ice cubic cubic mellow observatory is only 0.24 cubic miles (about 1 cubic kilometer), which means that the "sea bell" telescope will be more sensitive. It is found that the possibilities of neutrinos are possibleSex will be much larger.
Scientists say that a pilot project is expected to be completed in 2026, and a complete detector will begin operation in 2030.
Researchers published a dissertation in Nature · Astronomical Magazine on October 9th.They wrote that the performance limit of the "Sea Bell Plan" intends to break through the performance of the neutrine telescope and will increase the sensitivity in the origin of the germanometer's neutrinos.(Compiled/Hu Jing)
