Tokamak-15 electromagnetic system. Design and test results

Bondarchuk, E. N.; Dinaburg, L.B.; Doinikov, N.I.; Dubasov, V.G.; Zhelamsky, M.V.; Kalenin, V. V.; Konstantinov, A. B.; Костенко, А. Д.; Макаров, В. В.; Malyshev, I. F.; Monoszon, N.A.; Muratov, V.P.; Peregud, V.; Sabansky, I. I.; Sokolov, Y.-U. A.; Spirchenko, Y.-U. V.; Trokhachev, G.V.; Churakov, G.F.; Alkhinovich, V. A.; Anashkin, U. O.; Vertiporokh, A.N.; Ivanov, D.P.; Lelekhov, S.A.; Posadsky, I.A.; Stavissky, B. A.; Strelkov, V. S.; Khvostenko, P.P.; Shchepetilov, V. A.; Chernoplekov, N. A.; Kukshinov, A. I.

doi:10.1080/10519999208241300

Cited by 16 publications

(5 citation statements)

References 1 publication

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“…This minimizes the bending strain during conductor manufacturing and coil winding on the heattreated strands, whose excess could permanently degrade the conductor performance as it was the case e.g. in the conductor of T-15 tokamak [11]. The thermal strain assumed in the RW design was specified in [10] to be 0.35%, the value extracted from the 2015 test campaign of the first RW DEMO TF prototype [4].…”

Section: B Conductor Designmentioning

confidence: 99%

Design and R&D for the DEMO Toroidal Field Coils Based on Nb3Sn React and Wind Method

Sedlák

Bruzzone

Sarasola

et al. 2017

IEEE Trans. Appl. Supercond.

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In 2013, the Swiss Plasma Center (SPC) proposed a Toroidal Field (TF) layout for the DEMO-EUROfusion tokamak, based on a graded winding made of layers of Nb 3 Sn (react&wind) and NbTi conductors. The R&D effort led in 2015 to a full size prototype conductor tested up to 82.4 kA at 12.35 T. The test continued in 2016 and new results are presented. In summer 2015 a new reference baseline was issued for the DEMO-EUROfusion tokamak, leading to an update of the TF requirements. The design update is presented in this paper, with the winding pack consisting of 12 single layers of Nb 3 Sn with "invisible" (no protrusion) inter-layer joints. The high grade Nb 3 Sn react&wind conductor operates at 63.3 kA, 12.23 T with T cs > 6.5 K. A new prototype conductor is being manufactured. The main advantages of the graded approach, applied to both the superconductor and the stainless steel conduit, are a substantial space and cost saving compared to the wind&react approach with pancake winding.

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Section: B Conductor Designmentioning

confidence: 99%

Design and R&D for the DEMO Toroidal Field Coils Based on Nb3Sn React and Wind Method

Sedlák

Bruzzone

Sarasola

et al. 2017

IEEE Trans. Appl. Supercond.

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“…in the Mirror Fusion Test Facility (Livermore, USA), Levitated Dipole Experiment (MIT, USA) and more recently in a 25 T cryogen-free magnet [146] at IMR (Tohoku University, Japan). The disappointing experience from the T-15 tokamak, where the TF coils became resistive with ohmic heating in the kW range right from the first operation in 1988, presumably due to handling during which bending strain reached ±0.8% [147], brought a lot of aversion to the RW technology. However, the example of the main DC magnets of the SULTAN test facility [148], also built at the end of the 80s and in heavy operation since then, proves that the RW magnets can be very reliable, withstanding many electromagnetic and thermal cycles as well as fast discharges.…”

Section: Drawbacks and Risks Of The Rw Conceptmentioning

confidence: 99%

Superconductors for fusion: a roadmap

Mitchell

Zheng

Vorpahl³

et al. 2021

Supercond. Sci. Technol.

110

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With the first tokamak designed for full nuclear operation now well into final assembly (ITER), and a major new research tokamak starting commissioning (JT60SA), nuclear fusion is becoming a mainstream potential energy source for the future. A critical part of the viability of magnetic confinement for fusion is superconductor technology. The experience gained and lessons learned in the application of this technology to ITER and JT60SA, together with new and improved superconducting materials, is opening multiple routes to commercial fusion reactors. The objective of this roadmap is, through a series of short articles, to outline some of these routes and the materials/technologies that go with them.

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“…The toroidal field coils of the T-15 Tokamak [14], first operated in 1988 at the Kurchatov Institute in Moscow, still remain the largest worldwide application of conductors, see also Table I. The react & wind method was applied.…”

Section: B React and Windmentioning

confidence: 99%

30 Years of Conductors for Fusion: A Summary and Perspectives

Bruzzone

2006

IEEE Trans. Appl. Supercond.

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Three decades of conductor R&D, prototypes, model coils and actual fusion devices are reviewed with special attention to the drivers of the design. The conductor options are affected by the requirements typical of the fusion devices (large size and stored energy, high field, heat removal rate). The mechanical loads, operating voltage, ac loss and stability further restrict the freedom of the designer. On the other hand, the evolution of the available technologies for cryogenics and superconducting materials opens new frontiers for performance, reliability and cost. The lessons learned from the a dozen superconducting fusion devices are highlighted, starting from T-7, through MFTF, T-15, TRIAM, Tore Supra, LHD till the newest projects in construction, W-7X, EAST, SST-1, KSTAR. Some discussion is also devoted to the lessons that we keep refusing to learn.

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Tokamak-15 electromagnetic system. Design and test results

Cited by 16 publications

References 1 publication

Design and R&D for the DEMO Toroidal Field Coils Based on Nb3Sn React and Wind Method

Design and R&D for the DEMO Toroidal Field Coils Based on Nb3Sn React and Wind Method

Superconductors for fusion: a roadmap

30 Years of Conductors for Fusion: A Summary and Perspectives

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