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  • Cryoplant | Filled from floor to ceiling

    The ITER cryoplant used to be a vast echoey chamber with 5,400 m² of interior space divided into two areas; now, it is filled from floor to ceiling with industr [...]

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  • Cryostat | Adjusting, welding, testing ...

    The assembly of the ITER cryostat—the stainless steel "thermos" that insulates the ultra-cold superconducting magnets from the environment—is progress [...]

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  • Tokamak Building | Full steam ahead

    In this central arena of the construction site, construction teams are active three shifts a day—two full work shifts and a third, at night, dedicated to moving [...]

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  • Poloidal field coils | Turning tables and hot resin

    One of only two manufacturing facilities located on the ITER site, the Poloidal Field Coils Winding Facility was constructed by Europe to house the winding, imp [...]

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  • Assembly Hall | One giant standing

    Two identical handling tools in the Assembly Hall will play a critical role in preparing ITER's nine vacuum vessel sectors for their final journey: transport by [...]

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Of Interest

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New step forward for ITER's poloidal field converters

ITER China

Important to powering the ITER poloidal field magnets, the converter bridge (pictured) and external bypass were delivered by Chinese industry to ASIPP for testing last October. Here, the converter bypass undergoes the short circuit withstand test. (Click to view larger version...)
Important to powering the ITER poloidal field magnets, the converter bridge (pictured) and external bypass were delivered by Chinese industry to ASIPP for testing last October. Here, the converter bypass undergoes the short circuit withstand test.
Following the successful commissioning of the ITER power supply test facility at the Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP) last December, another exciting step forward has been made in the procurement of ITER's poloidal field converters.

The short circuit tests on the ITER poloidal field converter bridges and external bypass were accomplished successfully on 8 January 2014. In a series of stringent tests, partially witnessed by technical staff from the ITER Organization and the Chinese Domestic Agency, the soundness of the design and manufacture of these key components was demonstrated.

The positive test results achieved in December and January have demonstrated that the components fully meet the design requirements for the poloidal field converters. (Pictured: the external bypass.) (Click to view larger version...)
The positive test results achieved in December and January have demonstrated that the components fully meet the design requirements for the poloidal field converters. (Pictured: the external bypass.)
These tests included the short circuit withstand test, the dynamic current balance test, the prospective fault current test with the intervention of electronic protection, the FSC test with the intervention of electronic protection, and the FSC test without the intervention of electronic protection. The novelty of the component design created specific requirements, far different from similar tests performed in the past. The series tests were characterized by high test current (up to 430 kA) and complicated prospective waveform. Efforts from the engineers from the AC/DC converter team at ITER China resulted in the successful conclusion of all required type tests.

These positive test results—which demonstrate that manufacturing can fully meet the design requirements of the ITER poloidal field converters—pave the way for series production to begin.



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