5-9 September 2016
Prague Congress Centre
Europe/Prague timezone

P1.096 HTS CroCo for future fusion magnets

5 Sep 2016, 14:20
1h 40m
Foyer 2A (2nd floor), 3A (3rd floor) (Prague Congress Centre)

Foyer 2A (2nd floor), 3A (3rd floor)

Prague Congress Centre

5. května 65, Prague, Czech Republic
Board: 96
Poster E. Magnets and Power Supplies P1 Poster session

Speaker

Walter H. Fietz (Karlsruhe Institute of Technology (KIT))

Description

High-Temperature Superconductor (HTS) material REBCO has high critical currents even in high magnetic fields. The use of such material for future fusion magnets was already proposed in 2004, but the aspect ratio of REBCO, which is available as thin tapes only, made the realization of a high current cable in the current range of several 10 kA at magnetic fields around 12 T difficult. In the last years a number of cabling proposals were made, including HTS cable demonstrators reaching fusion relevant currents in the appropriate magnetic field, e.g. a cable demonstrated by SPC reached 60 kA@12 T using round twisted stacked strands. A relative new proposal refining the SPC approach is the formation of the HTS CrossConductor (HTS CroCo), using a cross shaped arrangement of REBCO tapes with two different widths to optimize the engineering critical density in a outer circular shape. Adding an outer envelope, this approach aims for an easy long length production of a round HTS CroCo unit, which may either be used for energy efficient power transmission in self field condition or as a basic strand for a high current cable in large high field coils. The poster will outline the HTS CroCo approach and show new results on an HTS CroCo fully equipped with 6 and 4mm REBCO tapes measured in the FBI facility.

Co-authors

Christian Lange (Karlsruhe Institute of Technology (KIT), Institute for Technical Physics (ITEP), Karlsruhe, Germany) Christoph M. Bayer (Karlsruhe Institute of Technology (KIT), Institute for Technical Physics (ITEP), Karlsruhe, Germany) Frank Groner (Karlsruhe Institute of Technology (KIT), Institute for Technical Physics (ITEP), Karlsruhe, Germany) Klaus-Peter Weiss (Karlsruhe Institute of Technology (KIT), Institute for Technical Physics (ITEP), Karlsruhe, Germany) Michael J. Wolf (Karlsruhe Institute of Technology (KIT), Institute for Technical Physics (ITEP), Karlsruhe, Germany) Nadezda Bagrets (Karlsruhe Institute of Technology (KIT), Institute for Technical Physics (ITEP), Karlsruhe, Germany) Reinhard Heller (Karlsruhe Institute of Technology (KIT), Institute for Technical Physics (ITEP), Karlsruhe, Germany) Walter H. Fietz (Karlsruhe Institute of Technology (KIT), Institute for Technical Physics (ITEP), Karlsruhe, Germany)

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