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Latest ITER Newsline

  • A world in itself

    From a height of some 50 metres, you have the entire ITER worksite at your feet. The long rectangle of the Diagnostics Building stands out in the centre, with [...]

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  • US completes toroidal field deliveries for ITER

    The US Domestic Agency achieved a major milestone in February by completing the delivery of all US-supplied toroidal field conductor to the European toroidal fi [...]

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  • Thin diagnostic coils to be fitted into giant magnets

    Last week was marked by the first delivery of diagnostic components—Continuous External Rogowski (CER) coils—from the European Domestic Agency to the ITER Organ [...]

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  • Addressing the challenge of plasma disruptions

    Plasma disruptions are fast events in tokamak plasmas that lead to the complete loss of the thermal and magnetic energy stored in the plasma. The plasma control [...]

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  • Blending (almost) seamlessly into the landscape

    Located in the foothills of the French Pre-Alps, the ITER installation blends almost seamlessly into the landscape. The architects' choice ofmirror-like steel c [...]

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Of Interest

See archived articles

PA for Spider's Power Supply and Calorimeter signed

Shishir P. Deshpande, Head of the Indian Domestic Agency, after the signature with his team: Ujjwal K. Baruah, Chandramoulli Rotti, Narinder P. Singh, Dilshad A. Sulaiman, Aruna M. Thakar and KGV Nair. (Click to view larger version...)
Shishir P. Deshpande, Head of the Indian Domestic Agency, after the signature with his team: Ujjwal K. Baruah, Chandramoulli Rotti, Narinder P. Singh, Dilshad A. Sulaiman, Aruna M. Thakar and KGV Nair.
This week, the Procurement Arrangement for the 100 kV Power Supply of the SPIDER test facility and calorimeter was signed by Shishir Deshpande, the Head of the Indian Domestic Agency. ITER Director-General Osamu Motojima signed the contract on 10 December. SPIDER is the source for Production of Ion of Deuterium Extracted Radio Frequency plasma. SPIDER - together with MITICA (Megavolt ITER injector & Concept Advance) - comprise PRIMA (Padua Research on ITER Megavolt Accelerator) that is also known as the Neutral Beam Test Facility (NBTF). The NBTF will be located in Padua, Italy.

The two main functions of SPIDER's calorimeter are to intercept the negative ion beam inside the vacuum vessel, and to measure the thermal loads for beam diagnostic. (Click to view larger version...)
The two main functions of SPIDER's calorimeter are to intercept the negative ion beam inside the vacuum vessel, and to measure the thermal loads for beam diagnostic.
On the full size NBTF, ITER components and subsystems for ITER's powerful neutral beams will be tested and developed. For example, it will test the ITER injector at full power and pulse length, thus establishing all the methods and procedures needed to fully commission the injectors on ITER, independently of ITER, using the built-in calorimeter.

The main objective of the SPIDER test bed is to optimize, as far as possible, the performance of the full ITER size ion source at full extracted current, at full pulse length with a source uniformity within ±10 % and in hydrogen and deuterium operation.

The calorimeter consists of two actively cooled panels composed of axial arrays of hypervapotron elements; the coolant manifolds and flexible hydraulic connections; two panel support frames to support the hypervapotron elements allowing free thermal deformations of the hypervapotron elements; and a beam dump support structure for connection to the front lid of the SPIDER Vacuum Vessel. (Click to view larger version...)
The calorimeter consists of two actively cooled panels composed of axial arrays of hypervapotron elements; the coolant manifolds and flexible hydraulic connections; two panel support frames to support the hypervapotron elements allowing free thermal deformations of the hypervapotron elements; and a beam dump support structure for connection to the front lid of the SPIDER Vacuum Vessel.
The SPIDER Power Supply (PS) System shall provide the electric power to the SPIDER accelerator grids and shall supply the SPIDER ion source and the auxiliary components. A section of the SPIDER PS system, called -100 kV PS, shall be capable of voltage regulation and of switch off in case of grid breakdown.


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