A seventh-grader in Dallas successfully built a working nuclear fusion device in his family home after four years of after-school work. Aiden McMillan, age 12, confirmed the achievement when his machine began producing neutrons, the telltale sign that atoms were fusing together.
The project started when McMillan was eight years old. He spent two years just reading and doing calculations before he ever touched a piece of equipment. What followed was years of trial and error, blown components, and a very skeptical mother who needed convincing that her son was not going to burn down the house.
Four Years Starting at Age Eight
McMillan, a student in the Dallas Independent School District, first became interested in nuclear fusion at eight years old. He spent the first two years studying nuclear physics concepts and running calculations before touching any equipment.
The next two years involved building prototypes, testing components, and troubleshooting problems. He worked on seven different prototypes before achieving success. Along the way, he taught himself practical skills rarely found in middle school curricula, including how to handle vacuum pumps and manage high-voltage equipment safely.
I mean, I loved the project, but I also kinda hated it,” McMillan told NBC DFW.
How a Small Fusion Device Works
Nuclear fusion is the same process that powers the Sun. Light atoms are forced together until they combine into a larger atom, releasing energy. Unlike the nuclear fission used in traditional power plants, fusion produces far less long-lived radioactive waste and no carbon dioxide.
McMillan’s device does not generate usable electricity. Instead, it recreates fusion on a tiny scale inside a sealed chamber using a device known as a fusor. The machine uses high voltage to accelerate deuterium gas atoms until some of them merge, and the resulting neutrons provide the proof that fusion occurred. Professional laboratories use the same detection method.
The moment McMillan detected neutrons, he said he became emotional. “We got neutrons, yeah!” he recalled. “Kind of tearing up about it cause it was like, hard to describe. It was like the end of a long, long journey.”
Safety and Family Trust
Building a fusion device at home raised obvious concerns, particularly from his mother. McMillan said she asked him to explain everything that could go wrong and how to prevent it before she allowed the project to continue.
“There were some alarm bells with my mom, yes,” he told NBC DFW. “She was like, ‘Whoa, whoa, whoa, take a step back, tell me exactly what could go wrong, and how it could go wrong and make sure it doesn’t go wrong.'”
Winning that trust was essential. Without it, the project never would have moved beyond notebooks and sketches. The device was built partly in a spare room at home and partly at Launchpad, a nonprofit makerspace in West Dallas that supports student engineering projects.
A Project of Pure Curiosity
McMillan said he pursued the work simply because he found it interesting, not for any external reward.
“It doesn’t make me jump higher. It doesn’t make me write faster. It doesn’t do anything for me, and to be honest, it’s really just a project of interest,” he told NBC DFW. “But in the grand scheme of things, like fusion as a whole, in my opinion, is the energy of the future.”
His work has already had a broader impact. McMillan’s project helped inspire Launchpad, the nonprofit makerspace where he did much of his building. The space was created in part to support ambitious student projects like building a fusion machine
Going for the Record
McMillan has applied to Guinness World Records to be recognized as the youngest person to achieve nuclear fusion. If approved, he would surpass Jackson Oswalt of Memphis, Tennessee, who achieved fusion in 2018 just hours before turning 13, as reported by Newsweek.
Oswalt spent approximately $10,000 converting his parents’ playroom into a lab, buying parts on eBay and learning from the online community Fusor.net. He was inspired by Taylor Wilson, who had set the previous record at age 14 in 2008. Oswalt’s achievement was later verified by the Open Source Fusor Research Consortium, and Guinness officially recognized him in October 2020.
When Oswalt’s achievement made headlines, FBI agents visited his home with a Geiger counter to check for radiation. The instrument detected no dangerous levels.
What This Means for Amateur Science
McMillan’s neutron measurements have been verified, and his device functioned as intended. Whether Guinness approves the record or not, the seventh-grader has already done something that most professional physicists never attempt at home.
Experts note that while homemade fusors like McMillan’s represent genuine nuclear reactions, they are not breakthroughs in energy production. The challenge is not simply achieving fusion but making it commercially viable. Still, very few adults could replicate what McMillan built.
His application remains under review.
indiandefencereview.com
The project started when McMillan was eight years old. He spent two years just reading and doing calculations before he ever touched a piece of equipment. What followed was years of trial and error, blown components, and a very skeptical mother who needed convincing that her son was not going to burn down the house.
Four Years Starting at Age Eight
McMillan, a student in the Dallas Independent School District, first became interested in nuclear fusion at eight years old. He spent the first two years studying nuclear physics concepts and running calculations before touching any equipment.
The next two years involved building prototypes, testing components, and troubleshooting problems. He worked on seven different prototypes before achieving success. Along the way, he taught himself practical skills rarely found in middle school curricula, including how to handle vacuum pumps and manage high-voltage equipment safely.
I mean, I loved the project, but I also kinda hated it,” McMillan told NBC DFW.
How a Small Fusion Device Works
Nuclear fusion is the same process that powers the Sun. Light atoms are forced together until they combine into a larger atom, releasing energy. Unlike the nuclear fission used in traditional power plants, fusion produces far less long-lived radioactive waste and no carbon dioxide.
McMillan’s device does not generate usable electricity. Instead, it recreates fusion on a tiny scale inside a sealed chamber using a device known as a fusor. The machine uses high voltage to accelerate deuterium gas atoms until some of them merge, and the resulting neutrons provide the proof that fusion occurred. Professional laboratories use the same detection method.
The moment McMillan detected neutrons, he said he became emotional. “We got neutrons, yeah!” he recalled. “Kind of tearing up about it cause it was like, hard to describe. It was like the end of a long, long journey.”
Safety and Family Trust
Building a fusion device at home raised obvious concerns, particularly from his mother. McMillan said she asked him to explain everything that could go wrong and how to prevent it before she allowed the project to continue.
“There were some alarm bells with my mom, yes,” he told NBC DFW. “She was like, ‘Whoa, whoa, whoa, take a step back, tell me exactly what could go wrong, and how it could go wrong and make sure it doesn’t go wrong.'”
Winning that trust was essential. Without it, the project never would have moved beyond notebooks and sketches. The device was built partly in a spare room at home and partly at Launchpad, a nonprofit makerspace in West Dallas that supports student engineering projects.
A Project of Pure Curiosity
McMillan said he pursued the work simply because he found it interesting, not for any external reward.
“It doesn’t make me jump higher. It doesn’t make me write faster. It doesn’t do anything for me, and to be honest, it’s really just a project of interest,” he told NBC DFW. “But in the grand scheme of things, like fusion as a whole, in my opinion, is the energy of the future.”
His work has already had a broader impact. McMillan’s project helped inspire Launchpad, the nonprofit makerspace where he did much of his building. The space was created in part to support ambitious student projects like building a fusion machine
Going for the Record
McMillan has applied to Guinness World Records to be recognized as the youngest person to achieve nuclear fusion. If approved, he would surpass Jackson Oswalt of Memphis, Tennessee, who achieved fusion in 2018 just hours before turning 13, as reported by Newsweek.
Oswalt spent approximately $10,000 converting his parents’ playroom into a lab, buying parts on eBay and learning from the online community Fusor.net. He was inspired by Taylor Wilson, who had set the previous record at age 14 in 2008. Oswalt’s achievement was later verified by the Open Source Fusor Research Consortium, and Guinness officially recognized him in October 2020.
When Oswalt’s achievement made headlines, FBI agents visited his home with a Geiger counter to check for radiation. The instrument detected no dangerous levels.
What This Means for Amateur Science
McMillan’s neutron measurements have been verified, and his device functioned as intended. Whether Guinness approves the record or not, the seventh-grader has already done something that most professional physicists never attempt at home.
Experts note that while homemade fusors like McMillan’s represent genuine nuclear reactions, they are not breakthroughs in energy production. The challenge is not simply achieving fusion but making it commercially viable. Still, very few adults could replicate what McMillan built.
His application remains under review.
A 12-Year-Old in Texas Spent Four Years Building a Nuclear Fusion Device at Home. Then He Detected Real Neutrons
He spent four years in a spare room while his friends played video games. Then his machine started producing something that should not exist in a suburban home.
indiandefencereview.com
