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How to sustain and measure temperature in a fusion plasma? This challenging task requires different heating systems and diagnostic tools. Information on the spatial distribution of temperature is one of the key elements for improving and controlling plasma performance.

In a recently published Nature Physics article, Didier Mazon, Christel Fenzi and Roland Sabot, of CEA's Research Institute on Magnetic Fusion (IRFM) explore the fascinating realm of ultra-hot temperatures.

Illustration of a new X2D diagnostic: spectroscopy for ion temperature measurement in the WEST tokamak.

Click to read the whole article in Nature Physics.

At the CEA Saclay's Cold Test Facility, near Paris, JT-60SA's first toroidal field coil has completed its round of tests at cryogenic temperature (4.5 K). "The coil became superconductive and reached its full current (25.7kA) without any problem," said Pietro Barabaschi, Home Team Project Manager for Europe's contribution to the  project.

A ceremony will be organized at CEA Saclay on 6 April prior to shipping the coil to Japan.

Read the story on the European Domestic Agency's .