Beneath the ocean’s surface, at a depth of 11,500 feet (3,500 meters), Chinese scientists are striving to complete the installation of the world’s most extensive “ghost particle” detector: the Tropical Deep-sea Neutrino Telescope, also known as TRIDENT. This colossal structure, named “Hai ling” or “Ocean Bell” in Chinese, is set to be anchored to the Western Pacific seabed and operational by 2030. TRIDENT’s primary aim is to track the elusive behavior of neutrinos through rare illuminations in the ocean’s depths.
Neutrinos, often referred to as ghost particles, pass through every square centimeter of our bodies at a staggering rate of 100 billion per second. Yet, due to their phantom-like properties—negligible mass and the absence of an electrical charge—they interact minimally with other particles. These elusive particles hold potential keys to unlocking the mysteries surrounding cosmic events like galactic collisions and stellar explosions.
During a recent media briefing, Xu Donglian, the project’s chief scientist, highlighted, “TRIDENT, located near the equator, will capture neutrinos arriving from all directions due to the Earth’s rotation, facilitating comprehensive all-sky observation without any blind spots.”
Neutrinos are birthed in various celestial events, such as nuclear fusion in stars and cosmic rays. Prior experiments have detected a continuous influx of neutrinos from the sun. However, detectors must be submerged in large volumes of water or ice to increase the probability of ghost particle interactions. TRIDENT’s innovative structure, comprising over 24,000 optical sensors across 1,211 lengthy strings anchored to the seabed, adopts a Penrose tiling pattern. This design, spanning a diameter of 2.5 miles (4 kilometers) and capable of scanning 1.7 cubic miles (7.5 cubic kilometers), surpasses the capacity of the current largest neutrino detector, IceCube, situated in Antarctica.
Reports suggest that TRIDENT’s pilot project will commence in 2026, aiming to pioneer searches for astrophysical neutrino sources by 2030. This endeavor is a monumental stride for China’s scientific community in particle physics. The fascination with neutrinos stems from their potential to unravel fundamental mysteries of the universe. Scientists anticipate that in-depth research and study of neutrinos will provide insights into the universe’s evolution and pioneering physics beyond current understanding.
The author is a novelist and science fiction writer. He has a special interest in the social and political affairs of South Asia. He can be reached at omariftikhar82@gmail.com
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