Progress on TF and PF Conductor for ITER in China

Liu, S.; Wang, M.; Pan, C.J.; Luo, Delong; Wu, Yu; Qin, Jinggang; Li, J.; Xi, Lei; Liu, J.; Du, S. J.

doi:10.1109/tasc.2013.2287220

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…The TF, MB and CB conductors have a circular jacket, the CS and PF conductors have a circle-in-square jacket, while the CC conductor is square. TF conductors are manufactured by six DAs: CN [19,20], EU [21], JA [22], KO [23], RF [24] and US. CS conductors are the responsibility of JA but are funded by the EU as part of the Broader Approach agreement negotiated between Japan and Europe at the time of site selection [25].…”

Section: Overviewmentioning

confidence: 99%

Challenges and status of ITER conductor production

Devred

Backbier

Bessette

et al. 2014

Supercond. Sci. Technol.

177

118

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Taking the relay of the Large Hadron Collider (LHC) at CERN, ITER has become the largest project in applied superconductivity. In addition to its technical complexity, ITER is also a management challenge as it relies on an unprecedented collaboration of 7 partners, representing more than half of the world population, who provide 90% of the components as in-kind contributions. The ITER magnet system has a stored energy of 51 GJ and involves 6 of the ITER partners. The coils are wound from Cable-In-Conduit Conductors (CICCs) made up of superconducting and copper strands assembled into a fully transposed, rope-type cable, inserted into a conduit of butt-welded austenitic steel tubes. The conductors for the Toroidal Field (TF) and Central Solenoid (CS) coils require about 500 tons of Nb 3 Sn strands while the Poloidal Field (PF) and Correction Coil (CC) and busbar conductors need around 250 tons of Nb-Ti strands. The required amount of Nb 3 Sn strands far exceeds pre-existing industrial capacity and has called for a significant worldwide production scale up. The TF conductors are the first ITER components to be mass produced and are more than 50% complete. During its life time, the CS coil will have to sustain several tens of thousands of electromagnetic (EM) cycles to high current and field conditions, way beyond anything a large Nb 3 Sn coil has ever experienced. Following a comprehensive R&D program, a technical solution has been found for the CS conductor, which ensures stable performance versus EM and thermal cycling. Productions of PF, CC and busbar conductors are also underway. After an introduction to the ITER project and magnet system, we describe the ITER conductor procurements and the Quality Assurance/Quality Control programs that have been implemented to ensure production uniformity across numerous suppliers. Then, we provide examples of technical challenges that have been encountered and we present a status of ITER conductor production worldwide.

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Section: Overviewmentioning

confidence: 99%

Challenges and status of ITER conductor production

Devred

Backbier

Bessette

et al. 2014

Supercond. Sci. Technol.

177

118

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“…The PF coils are grouped in three types, namely PF1&6, PF2-to-4 and PF5 according to their position in the magnet system. The Chinese DA will procure the PF2-to-4 and PF5 conductors [7][8][9][10] while European and Russian DAs will share the production of PF1 and PF6 [11,12]. The coils are wound from cable-in-conduit conductors (CICC), composed of a five-stage cable with a variable number of superconducting and pure Cu strands, inserted in a round-in-square tube (referred to as a jacket) made of a modified 316L austenitic stainless steel.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of the Nb−Ti conductor qualification samples for the ITER project

Breschi

Carati

Bessette

et al. 2015

Supercond. Sci. Technol.

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The ITER machine will require approximately 275 tons of Nb−Ti strands that will be used in poloidal field (PF) coils, correction coils (CC) and feeder busbars. The performance of all these conductors for the ITER machine is qualified by a short full-size sample (4 m) current sharing temperature (T cs ) test in the SULTAN facility at CRPP in Villigen, Switzerland, at the design operating current and peak field. Three ITER domestic agencies participated in PF conductor fabrication (China, the European Union, Russia) while the conductors for feeder busbars and correction coils are entirely produced by the Chinese domestic agency. Each conductor type was qualified by the ITER International Organization after reaching T cs values in excess of ITER specifications. This qualification enabled the launch of procurement and industrial production of the Nb−Ti cable-in-conduit conductors in each domestic agency. In this paper, we summarize the performance of the qualified Nb−Ti samples of the ITER Project, comparing strand performance with conductor performance. The details of the test results will be discussed in terms of dc performance, ac losses and minimum quench energies of each conductor type.

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Ongoing Efforts at Internal-Tin Nb3Sn Strand With Higher Jcn and Lower Hysteresis Loss

Liu¹,

Shi

et al. 2018

IEEE Trans. Appl. Supercond.

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Progress on TF and PF Conductor for ITER in China

Cited by 4 publications

References 5 publications

Challenges and status of ITER conductor production

Challenges and status of ITER conductor production

Performance analysis of the Nb−Ti conductor qualification samples for the ITER project

Ongoing Efforts at Internal-Tin Nb3Sn Strand With Higher Jcn and Lower Hysteresis Loss

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