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Latest ITER Newsline

  • The crown's jewels

    They are the jewels of the concrete crown that will support the combined mass of the Tokamak and its surrounding cryostat: 18 perfectly polished, chrome-plated [...]

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  • "Making the best of fusion installations in Europe"

    With the recent addition of the Ukraine's Kharkov Institute for Physics and Technology (KIPT), the EUROfusion consortium now encompasses 30 European fusion labo [...]

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  • New cryostat manufacturing milestone

    They all gathered—members of the ITER-India team and contractor Larsen & Toubro—to mark a portentous moment: the start of manufacturing on the upper cylinde [...]

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  • Key power supply elements pass tests in Russia

    Since the signature of a Procurement Arrangement in 2011 with Russia for switching networks, fast discharge units, DC busbars and instrumentation—all key elemen [...]

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  • First vessel subassembly achieved in Europe

    Nine massive steel sectors deliveredby the Domestic Agencies of Europe (five sectors) and Korea (four sectors) will be welded together on site during the assemb [...]

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Of Interest

See archived articles

Measuring hard-to-diagnose 3D plasmas

A simulated plasma in the Large Helical Device showing the thin blue saddle coils that researchers used to make diagnostic measurements with the new computer code. (Click to view larger version...)
A simulated plasma in the Large Helical Device showing the thin blue saddle coils that researchers used to make diagnostic measurements with the new computer code.
Scientists at the US Department of Energy's Princeton Plasma Physics Laboratory (PPPL) and the National Institute for Fusion Science (NIFS) in Japan have developed a rapid method for meeting a key challenge for fusion science. The challenge has been to simulate the diagnostic measurement of plasmas produced by twisting, or 3D, magnetic fields in fusion facilities. While such fields characterize facilities called stellarators, otherwise symmetric, or 2D, facilities such as tokamaks also can benefit from 3D fields.

Researchers led by PPPL physicist Sam Lazerson have now created a computer code that simulates the required diagnostics, and have validated the code on the Large Helical Device stellarator in Japan. Called "Diagno v2.0," the new program utilizes information from previous codes that simulate 3D plasmas without the diagnostic measurements. The addition of this new capability could, with further refinement, enable physicists to predict the outcome of 3D plasma experiments with a high degree of accuracy.

Read more here.


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