Progress in all-tungsten divertor superconducting tokamak devices has yielded significant results. Here are some specific developments:
First of all, in terms of material research and development, mass production of high-performance rolled tungsten materials has been achieved, which provides a solid foundation for the stable operation of the device. In addition, breakthroughs have also been made in the key technology of multi-layer hot isostatic pressing composite of tungsten and copper and chromium-zirconium-copper, successfully solving the problem of composites between different materials.
Secondly, in terms of the application of non-destructive testing technology, scientific researchers have been able to accurately and efficiently detect defects and damage in the divertor material, which greatly improves the safety and reliability of the device.
Finally, in terms of device plasma experiments, some advanced devices have begun long-term operation tests. For example, South Korea’s KSTAR facility has started plasma experiments after successfully upgrading its carbon divertor to a tungsten divertor and plans to continue until February 2024. Its main goals include verifying stable operation of the new tungsten divertor environment and reproducing a 100 million °C plasma. In addition, China’s EAST fully superconducting tokamak device also uses a tungsten-copper divertor and has made important progress in nuclear fusion experiments.
In general, the progress of the all-tungsten divertor superconducting tokamak device is positive, and new technological breakthroughs and experimental results are constantly emerging. These developments not only promote the development of nuclear fusion research, but also provide important technical support for achieving clean and sustainable energy supply in the future. However, it should be noted that nuclear fusion research is still a long-term and complex process that requires continued efforts and exploration by scientific researchers.
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