Components of the world’s largest “artificial sun”

DIGITAL PEOPLE’S DIARY 2022:11:23.14:24

Celebration of the construction of the prototype piece of the first enhanced heat flow wall panel for the international experimental thermonuclear reactor, also known as the world’s largest “artificial sun”, Guizhou, November 22, 2022. (Photo: Courtesy of Southwest Institute of Physics, National Nuclear Corporation of China)

by Cao Siqi and Du Qiongfang

Production of next-generation “artificial solar” core components, enhanced heat flow (EHF) first wall (FW) panel full-size prototype, core proportions significantly better than design requirements, and completed in China. The mass production conditions mark a new breakthrough by China in the scientific research of EHF and FW core technology.

The International Thermonuclear Experimental Reactor (ITER), also known as the world’s largest “artificial sun” for the discovery and development of nuclear fusion energy, is one of the world’s largest and most comprehensive international scientific projects, and the largest international scientific project. and a technological cooperation project in which China participates on equal terms with the European Union, India, Japan, South Korea, Russia and the USA.

China signed an agreement with six other parties on the launch of the ITER project in 2006 and is responsible for about 9 percent of their tasks.

In October, a new breakthrough was made in the “artificial sun” research in China, whose HL-2M plasma current exceeds 1 million amps, and the record for controllable nuclear fusion operation in the country was broken.

The EHF-FW panel, which can withstand reactor core surface plasma ion temperatures of up to 150 million C (about 10 times hotter than the actual Sun) during ITER operation, is the most critical core component of the ITER reactor. Basic technology of fusion reactor construction.

Chinese-dominated technology has previously led the way in passing international certification.

The full-size prototype part of the ITER EHF FW was developed by the Southwestern Institute of Physics within the state-owned China National Nuclear Corp (CNNC).

After producing the EHF-FW fingers in batches, the institute’s researchers collaborated with Guizhou Aerospace Xinli Technology Co., a company specializing in metal casting, to complete the soldering and component assembly, overcoming disruptions such as high temperatures, power outages and COVID-19 outbreaks. and tattoo located in Zunyi City, Guizhou Province, Southwest China.

Leading the international team in the production of the prototype part, the Chinese team once again made a major engineering breakthrough for the research and development of key ITER components, confirming China’s compliance with its international commitment.

Luo Delong, director of the International Application Center for the International Nuclear Fusion Energy Program at the Ministry of Science and Technology of China, said that the Chinese team has achieved great success after years of effort and very fruitful research and development.

“Through study, China has independently mastered the process principle and made breakthroughs in technology, while providing “Chinese wisdom” and “Chinese plans”, making tremendous contributions to independently specializing in key technologies, fulfilling international commitments, and demonstrating the responsibilities of great power,” Luo concluded.

(Web editor: 周雨, Zhao Jian)

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