A four-layer, two-inch bore, superconducting dipole magnet

Journal Article · Sun May 01 04:00:00 EDT 1983 · IEEE Trans. Magn.; (United States)

DOI:https://doi.org/10.1109/TMAG.1983.1062368· OSTI ID:5747327

Hassenzahl, W; Gilbert, W; Meuser, R; Peters, C; Taylor, C

Two superconductors can be considered for a 10 T accelerator. The first is Nb/sub 3/Sn, which can operate at 10 T at about 4.4 K, and the second is NbTi, which must operate in superfluid helium at 1.8 K to achieve 10 T. Several different designs were considered for these magnets and two were selected as the basis for a model testing program. The one described here, the cylindrical layer design, was selected because of the experience with this type of winding in the ESCAR, the Fermilab Doubler/ Saver, the Brookhaven ISABELLE magnets, and the recent results in the development and testing of model magnets at LBL. A somewhat similar design was described by Ishibashi and McInturff. The 50 mm (2'') bore was selected for these models to minimize costs. This program to develop 10 Tesla coils includes perfecting the 4 layer design including fabrication and assembly and developing a suitable conductor. The general conductor type selected is a Rutherford cable of approximately the width of the FNAL cable. To achieve 10 T in 4 layers with NbTi at 1.8 K requires an efficient coil design with graded conductor and a copper to superconductor ratio of about 1. The authors are now developing suitable graded cable. However, they used the cable with the lowest copper-tosuperconductor ratio available, 1.5, in the model dipoles described here. The current density is the same in all four layers.

• Research Organization: Lawrence Berkeley Lab, University of California, Berkeley, CA 94720
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5747327
• Journal Information: IEEE Trans. Magn.; (United States), Journal Name: IEEE Trans. Magn.; (United States) Vol. 19:3; ISSN IEMGA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
420201* -- Engineering-- Cryogenic Equipment & Devices
43 PARTICLE ACCELERATORS
430100 -- Particle Accelerators-- Design
Development
& Operation
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACCELERATORS
ALLOYS
COMPARATIVE EVALUATIONS
CURRENT DENSITY
DESIGN
DIPOLES
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTROMAGNETS
EQUIPMENT
FABRICATION
INTERMETALLIC COMPOUNDS
MAGNETS
MULTIPOLES
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
PARAMETRIC ANALYSIS
PERFORMANCE TESTING
PHYSICAL PROPERTIES
RESEARCH PROGRAMS
SUPERCONDUCTING COILS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
SUPERCONDUCTORS
TESTING
TIN ALLOYS
TITANIUM ALLOYS