The magnet is wound from REBCO (Rare earth – Barium – Copper Oxide) HTS tape. This conduction-cooled all-REBCO magnet achieved its peak field at 21K in a cold bore of 50 mm, which we believe to be record performance. In superconducting terms, 21K is a relatively high temperature. Additionally, the magnet is extremely robust, reliable and simple to manufacture. The engineers have been impressed by the defect tolerance of the coils and their response to a sudden loss of superconductivity, called a quench.
The achievement is an important milestone on the route to commercial fusion energy because high magnetic fields are necessary for tokamak machines to trap the hot fusion fuel, which is in the form of an electrically-charged gas called plasma. High temperature superconducting materials will facilitate the higher magnetic fields necessary for efficient commercial fusion reactors.
The progress of the HTS team has been faster than expected with milestones being hit well ahead of schedule (this milestone was scheduled for late 2020). The next step is to scale up these magnets into the configuration required for tokamaks.
SOURCES- Tokamak Energy
Written by Brian Wang, Nextbigfuture.com
Brian Wang is a prolific business-oriented writer of emerging and disruptive technologies. He is known for insightful articles that combine business and technical analysis that catches the attention of the general public and is also useful for those in the industries. He is the sole author and writer of nextbigfuture.com, the top online science blog. He is also involved in angel investing and raising funds for breakthrough technology startup companies.
He gave the recent keynote presentation at Monte Jade event with a talk entitled the Future for You. He gave an annual update on molecular nanotechnology at Singularity University on nanotechnology, gave a TEDX talk on energy, and advises USC ASTE 527 (advanced space projects program). He has been interviewed for radio, professional organizations. podcasts and corporate events. He was recently interviewed by the radio program Steel on Steel on satellites and high altitude balloons that will track all movement in many parts of the USA.
He fundraises for various high impact technology companies and has worked in computer technology, insurance, healthcare and with corporate finance.
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