NDLI: Testing of the Euratom LCT-coil, a forced-flow cooled NbTi coil, in the international fusion superconducting magnet test facility (IFSMTF)

Content Provider	IEEE Xplore Digital Library
Author	Herz, W. Katheder, H. Komarek, P. Maurer, W. Nother, G. Shen, S. Siewerdt, L. Susser, M. Ulbricht, A. Wuchner, F. Zahn, G.
Copyright Year	1965
Abstract	The Euratom-LCT-coil was tested as a single coil in the TOSKA facility at KfK Karlsruhe and in IFSMTF at ORNL Oak Ridge. Different mechanical boundary conditions and other operation parameters (mass flow, current) in the IFSMTF led to new set of results which broaden the knowledge about the coil. During cooldown the coil showed excellent heat transfer properties. The design current 11.4 kA with a max. field of 6.63 T could be reached with a ramp rate of 4 A/S without visible instabilities and thermal losses. The coil had at rated current a Stekly parameter α = 2.3 and could safely operated outside the cryogenic stability regime. The coil was 7 times dumped from currents higher than 4 kA with a peak voltage of 2.5 kV. Pressure increase was investigated under different boundary conditions and remained moderate. Dump losses measured were about 2 % of the stored energy. The coil was two times quenched during investigation of the operation limits. The quench detection system specially developed for this coil could be successfully tested with a level setting of 50 mV. For the first time the operation limits of such a coil were determined by current sharing measurement with heated helium slugs. The results are in fair agreement with those extrapolated from single strand measurements.
Sponsorship	IEEE Magnetics Society
Starting Page	1693
Ending Page	1696
Page Count	4
File Size	380255
File Format	PDF
ISSN	00189464
Volume Number	23
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1987-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Testing Niobium compounds Titanium compounds Superconducting coils Superconducting magnets Test facilities Boundary conditions Heat transfer Cryogenics Stability
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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