NDLI: Interstrand and AC-loss measurements on Rutherford-type cables for accelerator magnet applications

Content Provider	IEEE Xplore Digital Library
Author	Otmani, R. Devred, A. Tixador, P.
Copyright Year	2002
Abstract	One of the main issues for particle accelerator magnets is the control of interstrand resistances. Too low resistances result in large coupling currents during ramping, which distort field quality, while too large resistances may prevent current redistribution among cable strands, resulting in degraded quench performance. In this paper, we review a series of interstrand resistance and AC-loss measurements performed on four Rutherford-type cables. The four cables have the same number of strands and similar outer dimensions, corresponding to LHC quadrupole cable specifications. The first cable is made from NbTi strands, coated with silver-tin alloy, the second one is made from bare Nb/sub 3/Sn strands, the third one is made also from bare Nb/sub 3/Sn strands but includes a 25-/spl mu/m-thick stainless steel core between the strand layers, and the last one is made from Nb/sub 3/Sn strands plated with chromium. To cross-check the two measurement types and assess their consistency, we compare the coupling-current time constants determined from AC-loss measurements with estimates based on a simple analytical model and relying on measured interstrand resistances.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	2760
Ending Page	2763
Page Count	4
File Size	524936
File Format	PDF
ISSN	10518223
Volume Number	11
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cables Electrical resistance measurement Niobium Tin Time measurement Distortion measurement Magnetic field measurement Linear particle accelerator Magnets Degradation
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Interstrand resistance measurements on Nb/sub 3/Sn Rutherford-type cables

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