NDLI: Protecting a Full-Scale <inline-formula> <tex-math notation=TeX>$hbox{Nb}_{3}hbox{Sn}$</tex-math></inline-formula> Magnet With CLIQ, the New Coupling-Loss-Induced Quench System

Content Provider	IEEE Xplore Digital Library
Author	Ravaioli, E. Bajas, H. Datskov, V.I. Desbiolles, V. Feuvrier, J. Kirby, G. Maciejewski, M. Sabbi, G. ten Kate, H.H.J. Verweij, A.P.
Copyright Year	2002
Abstract	A new protection system for superconducting magnets called coupling-loss induced quench system (CLIQ) has been recently developed at CERN. Recent tests on Nb-Ti coils have shown that CLIQ is a valid, efficient, and promising method for the protection of high-magnetic-field superconducting magnets. However, the protection of new-generation Nb₃Sn accelerator magnets is even more challenging due to the much higher stored energy per unit volume and to the significantly larger enthalpy needed to initiate and propagate a normal zone in such coils. Now, the CLIQ system is tested for the first time on a Nb₃Sn magnet in the CERN magnet test facility in order to investigate its performance in practice, thereby validating the method for this type of superconducting magnets as well. Furthermore, we successfully reproduced the electrothermal transients during a CLIQ discharge. Finally, the implementation of various CLIQ-based protection schemes for the full-scale Nb₃Sn quadrupole magnet for the LHC high luminosity upgrade is discussed. The impact of key system parameters on CLIQ performance and the advantages and drawbacks of using multiple CLIQ units on a single magnet are discussed.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1
Ending Page	5
Page Count	5
File Size	986327
File Format	PDF
ISSN	10518223
Volume Number	25
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
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 Coils Niobium-tin Windings Discharges (electric) Magnetic circuits Heating superconducting coil accelerator magnet circuit modeling quench protection Accelerator magnet
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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First Implementation of the CLIQ Quench Protection System on a 14-m-Long Full-Scale LHC Dipole Magnet

Fabrication of a Third Generation of $hbox{Nb}_{3}hbox{Sn}$ Coils for the LARP HQ03 Quadrupole Magnet

Coil End Optimization of the $hbox{Nb}_{3}hbox{Sn}$ Quadrupole for the High Luminosity LHC

Development and Coil Fabrication Test of the $ hbox{Nb}_{3}hbox{Sn}$ Dipole Magnet FRESCA2

Fabrication of a Second-Generation of $hbox{Nb}_{3} hbox{Sn}$ Coils for the LARP HQ02 Quadrupole Magnet

New, Coupling Loss Induced, Quench Protection System for Superconducting Accelerator Magnets

Protection Heater Delay Time Optimization for High-Field $hbox{Nb}_{3}hbox{Sn}$ Accelerator Magnets

CLIQ-Based Quench Protection of a Chain of High-Field Superconducting Magnets

Impact of Coil Compaction on ${hbox {Nb}}_{3}{hbox {Sn}}$ LARP HQ Magnet

Protecting a Full-Scale $hbox{Nb}_{3}hbox{Sn}$ Magnet With CLIQ, the New Coupling-Loss-Induced Quench System

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