Satellite imagery has uncovered what appears to be a significant step in China’s nuclear research capabilities: a large-scale laser-ignited fusion research center under construction in Mianyang, a city in the southwestern Sichuan province.
This facility could play a crucial role in both advancing nuclear power generation and refining the design of nuclear weapons. According to CNN, the latest satellite photos reveal an impressive infrastructure with four massive “arms” arranged around a central experiment bay.
These “arms” will house laser bays, while the central tower is expected to contain a target chamber. Inside the chamber, hydrogen isotopes will be fused using powerful lasers and generate a burst of energy in a process known as fusion ignition.
The satellite images were first analyzed by Decker Eveleth, an analyst at the US-based CNA Corporation, who had been tracking the site’s progress for years.
Initially, the location appeared to be little more than an undeveloped patch of land in 2020. However, after pandemic-induced shutdowns were lifted, construction accelerated rapidly.
This experiment mirrors the layout of the US National Ignition Facility (NIF) in Northern California, which in 2022 achieved a breakthrough by producing more energy from fusion than the lasers pumped into the target, reaching “scientific breakeven.”
The Chinese facility, however, is reportedly 50% larger than NIF’s experiment bay, a size that could offer significant advantages.
According to Decker Eveleth, a larger bay would allow higher pressures to be applied, potentially compressing more material and increasing the energy produced from nuclear fusion reactions. However, achieving successful fusion is an incredibly difficult task, regardless of facility size.
While the specific aims of China’s Mianyang project remain unclear, its design suggests both scientific and military ambitions.
Fusion research could lead to groundbreaking advancements in energy generation, but the same technology could also contribute to the development of advanced nuclear weapons.
Potential Role of High-Powered Lasers in Advancing Nuclear Research
Laser fusion, also known as inertial confinement fusion, utilizes powerful lasers to create extreme heat and compression in a target containing hydrogen isotopes. This process sparks a micro-scale fusion reaction that replicates the energy production of the sun and other stars.
Laser fusion, often referred to as the “holy grail” of clean and abundant energy, holds the potential to meet growing global energy demands without the environmental harm associated with traditional fossil fuels.
Major powers, including the United States, France, the United Kingdom, and Russia, also operate similar inertial confinement fusion facilities.
These research initiatives are part of a worldwide competition to unlock the vast potential of nuclear fusion, with China’s new facility set to play a pivotal role in this race.
The facility also provides China with the capability to conduct nuclear weapons research. Both China and the United States are signatories to the Comprehensive Nuclear Test Ban Treaty (CTBT), which prohibits any nuclear explosions.

However, simulating the immense energy released by a nuclear explosion is a challenging task, particularly with computers and conventional methods.
This is where laser-ignition fusion facilities play a role, as they use high-powered lasers to direct intense energy onto various materials and recreate the conditions that exist in the first few microseconds after a nuclear detonation.
According to experts, any country that operates a National Ignition Facility (NIF)-type facility can, and likely will, increase its confidence in existing nuclear weapon designs. This could result in more advanced and refined weapons capabilities.
From one perspective, the facility could offer reassurance that China is not planning to conduct explosive nuclear tests. However, Eveleth also suggests that it might allow the development of more advanced and potentially smaller nuclear weapons.
The potential for such advancements raises concerns among experts, especially as some believe that the Mianyang site could evolve into a fusion-fission hybrid facility.
This type of technology, if realized, could be alarming, according to Andrew Holland, the CEO of the Fusion Industry Association. He cautioned that such technology, developed indigenously in China, could surpass anything of its kind currently available in Western countries in terms of power and capabilities.
Regardless of the specific direction the facility takes, it is clear that it is part of a broader, ambitious program by China to augment its nuclear and energy capabilities. In a related development, China’s fusion research has also achieved major milestones.
The country’s Experimental Advanced Superconducting Tokamak (EAST), known as the “artificial sun,” recently set a new record, sustaining plasma temperatures above 180 million degrees Fahrenheit (100 million degrees Celsius) for a remarkable 1,006 seconds.
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