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BIG Science - ITER

Fusion, the nuclear reaction that powers the sun and the stars, a potential source of safe, carbon-free, and practically limitless energy.

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Project: ITER

In southern France, 35 nations are working together to build the world's biggest tokamak, an experimental machine designed to harness the energy of fusion. Inside this vessel, the energy that is produced through the fusion of atoms, is absorbed as heat in the walls. A fusion powerplant will use this heat to produce steam, and later electricity by the way of turbines and generators, just like a conventional powerplant.

Somni has had the opportunity to contribute to this amazing innovation! Somni was asked to develop fiber optic accelerometers and temperature sensors for the Tokamak. Developing fiber optic accelerometers and temperature sensors that can withstand radiation, vacuum and high temperature environments is quite a challenge, but Somni made it happen!

ITER will be the first fusion device to produce net energy, and to maintain fusion for long periods of time. Furthermore, ITER will be the first fusion device to test the integrated technologies, materials, and physics regimes necessary for the commercial production of fusion-based electricity.

And now Somni can say they contributed!



  • Modified AC 1-ax 80 NT

  • Max temperature 170 °C

  • Radiation hard

  • Vacuum compatible

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  • Small form factor temperature sensor

  • Range 20°C - 300 °C

  • Radiation hard

  • Vacuum compatible


Let's Work Together

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Rik Knoppers


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Eric Meijer


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Remco Nieuwland