NDLI: Design and manufacture of the superconducting bus-bars for the LHC main magnets

Content Provider	IEEE Xplore Digital Library
Author	Belova, L. Genet, A. Perinet-Marquet, J.-L. Ivanov, P. Urpin, C.
Copyright Year	2002
Abstract	The main magnets of the LHC are series-connected electrically in different powering circuits by means of superconducting bus-bars, carrying a maximum current of 13 kA. These superconducting bus-bars consist of a superconducting cable thermally and electrically coupled to a copper profile all along the length. The function of the copper profile is essentially to provide an alternative path for the current in case the superconducting cable loses its superconducting state and returns to normal state because of a transient disturbance or of a normal zone propagation coming from the neighboring magnets. When a superconducting bus-bar quenches to normal state its temperature must always stay below a safe values of about 100/spl deg/C while the copper is conducting. When a resistive transition is detected, the protection systems triggers the ramping down of the current from 13 000 A to 0. The ramp rate must not exceed a maximum value to avoid the transition of magnets series-connected in the circuit. This paper concerns the design and the manufacture of the high current superconducting bus-bars needed to interconnect the magnetic elements of the main dipoles, the main quadrupoles of the arcs and of the dispersion suppressors of the LHC.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1305
Ending Page	1309
Page Count	5
File Size	296639
File Format	PDF
ISSN	10518223
Volume Number	12
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Superconducting magnets Large Hadron Collider Superconducting cables Copper Magnetic circuits Coupling circuits Temperature Protection Pulp manufacturing Integrated circuit interconnections
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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