Scientists in Germany switch on nuclear fusion experiment

Scientists in Germany flipped the switch Wednesday on an experiment they hope will advance the quest for nuclear fusion, considered a clean and safe form of nuclear power.

GREIFSWALD, Germany — Scientists in Germany flipped the switch Wednesday on an experiment they hope will advance the quest for nuclear fusion, considered a clean and safe form of nuclear power.

Following nine years of construction and testing, researchers at the Max Planck Institute for Plasma Physics in Greifswald injected a tiny amount of hydrogen into a doughnut-shaped device — then zapped it with the equivalent of 6,000 microwave ovens.

The resulting super-hot gas, known as plasma, lasted just a fraction of a second before cooling down again, long enough for scientists to confidently declare the start of their experiment a success.

“Everything went well today,” said Robert Wolf, a senior scientist involved with the project. “With a system as complex as this you have to make sure everything works perfectly and there’s always a risk.”

Among the difficulties is how to cool the complex arrangement of magnets required to keep the plasma floating inside the device, Wolf said. Scientists looked closely at the hiccups experienced during the start-up of the Large Hadron Collider in Switzerland more than five years ago to avoid similar mistakes, he said.

The experiment in Greifswald is part of a world-wide effort to harness nuclear fusion, a process in which atoms join at extremely high temperatures and release large amounts of energy that’s similar to what occurs inside the sun.

Advocates acknowledge that the technology is probably many decades away, but argue that — once achieved — it could replace fossil fuels and conventional nuclear fission reactors.

Construction has already begun in southern France on ITER, a huge international research reactor that uses a strong electric current to trap plasma inside a doughnut-shaped device long enough for fusion to take place. The device, known as a tokamak, was conceived by Soviet physicists in the 1950s and is considered fairly easy to build, but extremely difficult to operate.

The team in Greifswald, a port city on Germany’s Baltic coast, is focused on a rival technology invented by the American physicist Lyman Spitzer in 1950. Called a stellarator, the device has the same doughnut shape as a tokamak but uses a complicated system of magnetic coils instead of a current to achieve the same result.

The Greifswald device should be able to keep plasma in place for much longer than a tokamak, said Thomas Klinger, who heads the project.

“The stellarator is much calmer,” he said in a telephone interview ahead of the start. “It’s far harder to build, but easier to operate.”

Known as the Wendelstein 7-X stellarator, or W7-X, the 400-million-euro ($435 million) device was first fired up in December using helium, which is easier to heat. Helium also has the advantage of “cleaning” any minute dirt particles left behind during the construction of the device.

Over the coming years the device, which isn’t designed to produce energy itself, will slowly increase the temperature and duration of the plasma with the goal of keeping it stable for 30 minutes, Wolf said.

“If we manage 2025, that’s good. Earlier is even better,” he said.

Scientists hope that the W7-X experiment will allow them to test many of the extreme conditions such devices will be subjected to if they are ever to generate power.

David Anderson, a professor of physics at the University of Wisconsin who isn’t involved in the project, said the project in Greifswald looks promising so far.

“The impressive results obtained in the startup of the machine were remarkable,” he said in an email. “This is usually a difficult and arduous process. The speed with which W7-X became operational is a testament to the care and quality of the fabrication of the device and makes a very positive statement about the stellarator concept itself. W7-X is a truly remarkable achievement and the worldwide fusion community looks forward to many exciting results.”

While critics have said the pursuit of nuclear fusion is an expensive waste of money that could be better spent on other projects, Germany has forged ahead in funding the Greifswald project, costs for which have reached (euro)1.06 billion euros in the past 20 years if staff salaries are included.

Chancellor Angela Merkel, who holds a doctorate in physics, personally pressed the button at Wednesday’s launch.

“As an industrial nation we want to show that an affordable, safe, reliable and sustainable power supply is possible, without any loss of economic competitiveness,” she said. “The advantages of fusion energy are obvious.”

The Polish government, European Union and the U.S. Department of Energy also contributed funding for the project. The U.S. contribution, which included crucial error-correcting coils and imaging equipment, gives American scientists a chance to help develop cutting-edge technology and participate in the experiment, said Edmund J. Synakowski, the agency’s associate director for fusion energy sciences.

Although there are about a dozen stellarator experiments around the world, including in the U.S., Japan, Australia and Europe, scientists say the Greifswald device is the first to match the performance of tokamaks.

“If the United States isn’t at the table once scientists start asking questions that can only be answered here, then we’re out of the game,” Synakowski said.

Just Posted

Red Deer area businesses recognized at Business of the Year Awards night

“It’s an honour just to be nominated.” The popular words echoed throughout… Continue reading

Child sex offender should get 12 years: Crown prosecutor

Stuart Peter Hunt has pleaded guilty to 10 child sexual exploitation and pornography charges

Legalizing cannabis cost estimate for Red Deer just under $400k

Although the province of Alberta has announced $11.2 million for cannabis legalization,… Continue reading

WATCH: Every square tells a story: Edmonton expert is exploring Red Deer’s quilting history

Community members can bring in family heirloom quilts for documentation

Red Deer-area dads going through divorce are invited to Man Up

Support group formed to focus on positive activities, networking

WATCH: Two weeks away from Canadian Finals Rodeo in Red Deer

In just two weeks, Ponoka’s Shayna Weir will compete with the best… Continue reading

PHOTO: Say goodbye to City Hall Park flowers

A sure sign that winter is on its way is when City… Continue reading

PHOTO: Chew On This! campaign draws attention to national poverty

Lunch bags were being handed out in front of The Hub downtown… Continue reading

Wickenheiser, Pegula reflect NHL’s trend toward diversity

BUFFALO, N.Y. — With a laugh, Kim Pegula’s competitive nature kicked in… Continue reading

Harry and Meghan bring rain to drought-stricken Outback town

DUBBO, Australia — The Duke and Duchess of Sussex were jokingly thanked… Continue reading

TV Review: A Roseanne Barr-less ‘The Conners’ is a triumph

NEW YORK — Can there be a “Roseanne” without Roseanne? The answer… Continue reading

Canadian manufacturing sales fell 0.4 per cent in August: Statistics Canada

OTTAWA — Statistics Canada says manufacturing sales fell 0.4 per cent to… Continue reading

Brian Mulroney joins board of directors of New York-based pot company

NEW YORK — Former prime minister Brian Mulroney is joining the board… Continue reading

Canadians waking up to legalized cannabis: ‘My new dealer is the prime minister’

ST. JOHN’S, N.L. — Canadians across the country woke up to legalized… Continue reading

Most Read