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Magnet cold test facility

First power supply elements delivered

30 Jun 2025

A new cold test facility for ITER magnets is taking shape on site, with testing on the first toroidal field coil expected to begin at the end of the year. Components for the facility continue to arrive on schedule. 

Representatives of the Chinese manufacturing consortium and the ITER Organization during the final design review held at RXHK.

On 22 June, the first batch of equipment and materials for the facility's customized 68 kA power supply system reached ITER. Two other batches have been shipped from Shanghai harbour, and their delivery is expected in August.

In May 2024, a consortium formed by Rongxin Huike Electric Co., Ltd (RXHK), the Institute of Plasma Physics/Chinese Academy of Sciences (ASIPP), and Hefei Rongke Hengyang Power Technology Co., Ltd (RHR) was awarded a contract for the design, manufacturing, installation and commissioning of the test facility’s power supply system. Despite an extremely tight schedule and several challenges, the overall project team for this procurement, composed of representatives of the Chinese consortium and ITER specialists, successfully achieved this key milestone within thirteen months, demonstrating the power of collaboration and persistence using their efforts in days and nights.

Two other batches have left China and are expected in August. Commissioning on the magnet cold test facility will start in the autumn, when all components have been installed.

Located in the former Poloidal Field Coils Winding Facility, the magnet cold test facility will have its own cryostat and power system to cool magnets to 4 K (minus 269 °C) and energize them up to 68 kA—offering a real-scale test of a diverse set of toroidal field coils, from multiple coil and conductor manufacturers, as well as a general rehearsal for auxiliary systems (feeders, cryogenics, control-command…) to derisk that portion of the machine’s integrated commissioning.

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