NDLI: Bi-2212 Canted-Cosine-Theta Coils for High-Field Accelerator Magnets

Content Provider	IEEE Xplore Digital Library
Author	Godeke, A. Brouwer, L.N. Caspi, S. Dietderich, D.R. Gourlay, S.A. Hafalia, R.R. Heys, N.I. Higley, H.C. Lipton, T.M. Reynolds, M.A. Swanson, J.H.
Copyright Year	2002
Abstract	report on wind-and-react (W&R) Bi₂Sr₂CaCu₂O_8+x (Bi-2212) insert coils that were fabricated using a Canted-Cosine-Theta (CCT) coil technology. In the CCT technology, a conductor is wound into canted helical channels that are machined into cylindrical coil winding mandrels, thereby creating a cosine-theta current distribution and providing stress support at the conductor level. The prevention of stress accumulations by the internal structure of winding mandrels is considered an enabling technology for high field Bi-2212 insert coils that target the 20 T magnetic field range. We report on the fabrication and reaction of coils for two proof-of-principle Bi-2212 inserts, BIN1 and BIN2, each consisting of two CCT coils. The BIN1 coils use insulated 0.8 mm diameter wires and INCONEL 600 coil winding mandrels with a stainless steel 316 shell, an overall diameter of 50.0 mm and a clear bore of 35.3 mm. The BIN2 coils use insulated 6-around-1 cables from 0.8-mm diameter wires, and aluminum-bronze mandrels with an aluminum alloy 6061 shell, an overall outer diameter of 68.6 mm, and a clear bore of 38.8 mm. The coils are designed to study the fabrication, reaction, and impregnation in Bi-2212 CCT technology, and provide a baseline for a Rutherford cable-wound coil set (BIN3). These latter coils target an insert-coil set with optimized current density in the windings, to enable the construction of an 18 T Nb₃Sn-Bi-2212 hybrid dipole magnet.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1
Ending Page	4
Page Count	4
File Size	786119
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	Coils Wires Niobium-tin Superconducting magnets Windings high magnetic field accelerator magnet Bi-2212 high temperature superconductor 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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Canted–Cosine–Theta Magnet (CCT)—A Concept for High Field Accelerator Magnets

Design of an 18-T Canted Cosine–Theta Superconducting Dipole Magnet

Structural Analysis of an 18 T Hybrid Canted–Cosine–Theta Superconducting Dipole

The Development of High Field Magnets Utilizing Bi-2212 Wind & React Insert Coils

Progress in Wind-and-React Bi-2212 Accelerator Magnet Technology

High Field Insert Coils From Bi-2212/Ag Round Wires

Canted–Cosine–Theta Magnet (CCT)—A Concept for High Field Accelerator Magnets

Test Results of CCT1—A 2.4 T Canted-Cosine-Theta Dipole Magnet

Limits of NbTi and ${rm Nb}_{3}{rm Sn}$, and Development of W&R Bi–2212 High Field Accelerator Magnets

Bi-2212 Canted-Cosine-Theta Coils for High-Field Accelerator Magnets

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