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Category: nuclear energy

Scientists have just set a new world record for high-temperature sustained plasma with the Korea Superconducting Tokamak Advanced Research (KSTAR) device, reaching an ion temperature of above 100 million degrees Celsius (180 million degrees Fahrenheit) for a period of 20 seconds.

Known as Korea’s “artificial sun”, the KSTAR uses magnetic fields to generate and stabilise ultra-hot plasma, with the ultimate aim of making nuclear fusion power a reality – a potentially unlimited source of clean energy that could transform the way we power our lives, if we can get it to work as intended.

Before this point, 100 million degrees hadn’t been breached for more than 10 seconds, so it’s a substantial improvement on previous efforts – even if there’s still a long way to go before we can completely ditch other sources of energy. At this point, nuclear fusion power remains a possibility, not a certainty.

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Nuclear energy accounts for nearly 20% of electricity generated in the US, more than wind, solar and hydro combined. But now, new nuclear reactor designs could bring far more widespread use and public acceptance of this powerful form of energy.

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KSTAR sets the new world record of 20-sec-long operation at 100 million °C. Aims to continuously operate high-temperature plasma over the 100-million-degree for 300 seconds by 2025.

The Korea Superconducting Tokamak Advanced Research (KSTAR), a superconducting fusion device also known as the Korean artificial sun, set the new world record as it succeeded in maintaining the high temperature plasma for 20 seconds with an ion temperature over 100 million degrees.

On November 24, 2020, the KSTAR Research Center at the Korea Institute of Fusion Energy (KEF) announced that in a joint research with the Seoul National University (SNU) and Columbia University of the United States, it succeeded in continuous operation of plasma for 20 seconds with an ion-temperature higher than 100 million degrees, which is one of the core conditions of nuclear fusion in the 2020 KSTAR Plasma Campaign.

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The Korea Superconducting Tokamak Advanced Research(KSTAR), a superconducting fusion device also known as the Korean artificial sun, set the new world record as it succeeded in maintaining the high temperature plasma for 20 seconds with an ion temperature over 100 million degrees.

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Peterborough, ON — Ontario Power Generation (OPG), its subsidiary Laurentis Energy Partners (Laurentis), BWXT ITG Canada Inc. and its affiliates (BWXT) are making significant progress toward the production of molybdenum-99 (Mo-99) at OPG’s Darlington Nuclear Generating Station. Mo-99 is a much-needed medical isotope used in over 40 million procedures a year to detect cancers and diagnose various medical conditions.

Over the past 24 months, a team of more than 100 personnel at BWXT and Laurentis designed specialized tooling at BWXT’s facility in Peterborough to enable the production of Mo-99 at Darlington. The manufacturing of this specialized tooling is currently underway at the same BWXT facility in Peterborough.

BWXT has also built a fabrication facility at its current location in Peterborough to produce Mo-99 components that will be delivered by the specialized tooling, which will be installed at Darlington. The tooling will deliver the molybdenum into the Darlington reactor for irradiation, which will enable Darlington to become the first commercial operating nuclear reactor to produce Mo-99.

“This advanced equipment is an example of how Laurentis is maximizing decades of experience within the nuclear industry for the delivery of innovative solutions,” said Dominique Minière, President of Laurentis Energy Partners. “These milestones represent a considerable step forward in the implementation of this industry-leading technology.”

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Inside these walls, scientists have been trying for decades to create an unlimited source of energy, nuclear fusion. Welcome to JET, the world’s biggest nuclear fusion experiment.

Scientists argue that fusion could replace coal gas and nuclear fission in the energy mix alongside renewable energy, which can prove to be unreliable. If we can learn to control it, nuclear fusion could change life as we know it. But that’s a big if.

This video was produced as part of Digital Society, a publishing partnership between WIRED and Vontobel where all content is editorially independent. Visit Vontobel Impact for more stories on how technology is shaping the future of society: https://www.vontobel.com/en-int/about-vontobel/impact/

With thanks to the CCFE: https://ccfe.ukaea.uk.

#WIRED #NuclearFusion #NuclearReactor

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More than two-thirds of the energy used worldwide is ultimately ejected as “waste heat.” Within that reservoir of discarded energy lies a great and largely untapped opportunity, claim scientists in MIT’s Department of Nuclear Science and Engineering (NSE). As reported in a recent issue of Nature Communications, the MIT team—led by Assistant Professor Mingda Li, who heads NSE’s Quantum Matter Group—has achieved a breakthrough in thermoelectric generation, which offers a direct means of converting thermal energy, including waste heat, into electricity.

A , or difference, within a material such as a metal or semiconductor can, through a phenomenon known as the Seebeck effect, give rise to an that drives a current. “For many materials, the is too low to be useful,” explains NSE Research Scientist Fei Han. “Our goal is to find materials with conversion efficiencies high enough to make thermoelectric generation more practical.”

The efficiency of thermoelectric energy conversion is proportional to a material’s , electrical , and something called the “” squared; it is inversely proportional to the . Because efficiency goes up with temperature, most thermoelectric materials used today operate in the range of hundreds of degrees centigrade. “But in our lives, most of the stuff around us is at room temperature,” Han says. “That’s why we’re trying to discover new materials that work effectively at or below room temperature.”

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They’re another welcome weapon in the fight against fossil fuels.

After getting bodied in the news cycle for a few months, small modular nuclear startup NuScale Power has an additional potential path to the diverse energy market. In a new evaluation run by the U.S. Department of Energy’s Idaho National Laboratory, NuScale’s nuclear module performed effective catalysis for hydrogen.

☢️You love nuclear. So do we. Let’s nerd out over nuclear together.

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