Thousands of seconds of stable operation, AI precise regulation — "Artificial Sun" lights up a new hope for future energy.

“15th Five-Year Plan” kicks off, future industries accelerate landing. In Shanghai Lingang, our country has achieved a landmark breakthrough in the future energy sector—the world’s first all-high-temperature superconducting Tokamak device, “Honghuang 70,” successfully achieved a steady-state long pulse operation of 1337 seconds, setting a new world record in commercial nuclear fusion. This device, hailed as the “artificial sun,” has taken a key step for our country to seize the high ground of future energy and explore the “ultimate energy” solution in China.

Central Media Reporter Chen Yang: In an experimental workshop in Shanghai Lingang, this “big guy” is the world’s first all-high-temperature superconducting Tokamak device—“Honghuang 70.” Just last month, it completed an important breakthrough, achieving a steady-state long pulse operation of 1337 seconds, which means it ran continuously for about 22 minutes. Currently, the researchers are monitoring data and inspecting and repairing some key components to prepare for the next round of experiments.

Focusing on Future Industries: Exploring China’s Solution for “Ultimate Energy”

Central Media Reporter Chen Yang: This device has a very vivid name, called “artificial sun.” The reason the sun can continuously emit light and heat is due to internal nuclear fusion reactions. If we can build such a “furnace” on Earth, using heavy water extracted from seawater as fuel, we can obtain a continuous supply of clean energy.

How to store energy? The internal temperature of the sun is about 15 million degrees Celsius. On Earth, we do not have such high temperatures and gravity; at such high temperatures, any material would instantly vaporize. The answer lies in this “doughnut.”

In this cross-sectional view, the core structure is this doughnut-shaped vacuum chamber, surrounded by coil after coil. When electrified, these coils generate an invisible but extremely powerful helical magnetic field. Once this magnetic field is established, it suspends the fireball, holding it steady and preventing it from touching any inner walls.

Breaking Global Records: High-Temperature Superconducting Technology Achieves “Overtaking on a Curve”

What is different about “Honghuang 70” compared to traditional Tokamaks? The key lies in the high-temperature superconducting materials of “Honghuang 70.”

Ordinary magnets generate heat when electrified and can only run for a while; however, high-temperature superconducting materials have zero resistance at critical temperatures and can produce a powerful magnetic field. By increasing the magnetic field strength, the size of the device has been significantly reduced, and construction costs have also been notably lowered.

From June 2024 to now, this device has achieved a series of breakthroughs. More importantly, its localization rate exceeds 96%, achieving complete independent intellectual property rights.

AI Deep Empowerment: Artificial Intelligence Reshapes the Energy Landscape

To tame this “artificial sun,” hardware alone is not enough; it also needs an intelligent “brain.” The development team has equipped “Honghuang 70” with an AI “brain” that can monitor the temperature, position, density, and other parameters of the fireball in real-time, adjusting the overall magnetic field at millisecond levels, much like real-time navigation, steadily controlling every step. This has transformed the original “trial-and-error” experiments into “precise” control.

In the first year of the “15th Five-Year Plan,” future energy has welcomed new breakthroughs. Cutting-edge explorations like controllable nuclear fusion lay a more solid foundation for realizing our future energy dreams.