Experimental Results of a 70 kA High Temperature Superconductor Current Lead Demonstrator for the ITER Magnet System

Heller, R.; Darweschsad, S.M; Dittrich, G.; Fietz, W.H.; Fink, S.; Herz, Werner; Hurd, F.; Kienzler, A.; Lingor, A.; Meyer, Ingeborg; Nöther, G.; Susser, Mervyn; Tanna, V.L.; Vostner, A.; Wesche, R.; Wüchner, F.; Zahn, G.

doi:10.1109/tasc.2005.849145

Cited by 76 publications

(22 citation statements)

References 3 publications

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“…As in previously manufactured HTS current leads [15], [18], a mechanically robust design is obtained by soldering of the HTS stacks into the milled grooves of a stainless steel support tube. The cold end copper contact at the bottom is used to connect the 1051-8223/$26.00 © 2011 IEEE two HTS current leads with a low temperature superconductor bus bar during testing.…”

Section: Outline Design Of the Current Leadsmentioning

confidence: 99%

Development of HTS Current Leads for Industrial Fabrication

Wesche

Börsch

Bruzzone

et al. 2012

IEEE Trans. Appl. Supercond.

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High temperature superconductor current leads have been demonstrated to provide cryogenic savings compared to conventional copper leads. The applicability of HTS current leads to industrial fabrication is now a possibility. CRPP and WEKA AG are collaborating in the development of current leads for currents in the range of 3 kA to 30 kA, which are suitable for industrial fabrication. The design of these leads is such that the architecture and construction can be easily scaled to the required current level. The main components of these current leads are an HTS module, a copper heat exchanger, and cold and warm end connections. Two 10 kA prototype current leads, mainly distinguished by different designs of the copper heat exchanger, will be constructed. They will be tested at CRPP to verify the manufacturing processes and the overall design.Index Terms-Current lead design, heat exchanger, HTS current leads, industrial fabrication.

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Section: Outline Design Of the Current Leadsmentioning

confidence: 99%

Development of HTS Current Leads for Industrial Fabrication

Wesche

Börsch

Bruzzone

et al. 2012

IEEE Trans. Appl. Supercond.

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“…As reference for the 68 kA HTS CL considered in this study, we use the 70 kA HTS CL demonstrator, which was tested in many different operative conditions up to 80 kA [6].The HX in the demonstrator was of the perforated plate type, i.e., the main helium flow direction was parallel to the central Cu bar and through a series of circular perforated fins radially brazed to the central bar. In the 1-D model presented here we adopt a MF HX, which is presently the leading design for the CL HX of fusion devices under construction.…”

Section: A Reference 68 Ka Hts Current Leadmentioning

confidence: 99%

Analysis and Performance Assessment for a 68 kA HTS Current Lead Heat Exchanger

Rizzo¹,

Heller²,

Savoldi

et al. 2012

IEEE Trans. Appl. Supercond.

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In this paper we extend the recently developed CtFD strategy for the analysis of the thermal-hydraulics of a meander flow type heat exchanger, validated against the Wendelstein7-X (W7-X) High Temperature Superconductor (HTS) current lead prototype experiment, to the case of a heat exchanger for a 68 kA HTS current lead. We aim to assess the optimized operative conditions and the influence of different geometrical configurations on the performance of the heat exchanger.Index Terms-Fin type heat exchanger, fusion magnets, high temperature superconductor current lead.

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“…With the development in the properties of high temperature superconducting (HTS) conductors, the HTS magnet could be considered as potential Tokamak magnet components with the advantages of higher operation temperature and critical current density [1][2][3]. At present, the application of HTS in fusion devices mainly focuses on the design and fabrication of high temperature superconducting high current conductor [4][5][6][7][8], the design and fabrication of high temperature superconducting current lead [9,10], and the concept design and small model fabrication of HTS magnet [11,12]. It was revealed that when the TF coil system operates at the temperature range of 10 to 20 K, accordingly, the manufacturing and operating cost of the device could be reduced [13].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of a No-Insulation BSCCO Toroidal Magnet Applied in Magnetic Confinement Fusion

Zhang

Tang

et al. 2018

Science and Technology of Nuclear Installations

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At present, the Tokamak has become a mainstream form of the magnetic confinement fusion device. The toroidal field (TF) magnet in the Tokamak system is required to generate a high-steady field to confine and shape the high temperature plasma. To secure high current density and high thermal stability, the no-insulation (NI) winding technique is used in the fabrication of the TF magnet. During plasma operation, heat is generated in the TF magnet caused by the interaction with central solenoid (CS) coils, poloidal field (PF) coils, and the plasma current. The heat generated in NI coils is complex owing to the existence of current flow between adjacent turns. Thus, it is necessary to calculate the thermal problems. Taking into consideration the effect of turn-to-turn contact resistance, this paper presents the thermal behavior of a NI toroidal magnet under different operating conditions. The NI toroidal magnet is composed of 10 double-pancake (DP) coils wound with BSCCO tapes. The analysis procedure combines the finite element method (FEM) with an equivalent circuit model. This analysis has applicability and practical directive to the design of cryogenic cooling system for NI toroidal magnet.

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Experimental Results of a 70 kA High Temperature Superconductor Current Lead Demonstrator for the ITER Magnet System

Cited by 76 publications

References 3 publications

Development of HTS Current Leads for Industrial Fabrication

Development of HTS Current Leads for Industrial Fabrication

Analysis and Performance Assessment for a 68 kA HTS Current Lead Heat Exchanger

Numerical Simulation of a No-Insulation BSCCO Toroidal Magnet Applied in Magnetic Confinement Fusion

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