Bent Solenoids with Superimposed Dipole Fields
A conceptual design and manufacturing technique were developed for a superconducting bent solenoid magnet with a superimposed dipole field that would be used as a dispersion device in the cooling channel of a future Muon Collider. The considered bent solenoid is equivalent to a 180° section of a toroid with a major radius of ~610 mm and a coil aperture of ~416 mm. The required field components of this magnet are 4 tesla for the solenoid field and 1 tesla for the superimposed dipole field. A magnet of this size and shape, operating at these field levels, has to sustain large Lorentz forces resulting in a maximum magnetic pressure of about 2,000 psi. A flexible round mini-cable with 37 strands of Cu-NbTi was selected as the superconductor. Detailed magnetic analysis showed that it is possible to obtain the required superimposed dipole field by tilting the winding planes of the solenoid by ~25°. A complete structural analysis of the coil support system and the helium containment vessel under thermal, pressure, and Lorentz force loads was carried out using 3D finite element models of the structures. The main technical issues were studied and solutions were worked out so that a highly reliable magnet of this type can be produced at an affordable cost.
- Research Organization:
- Advanced Magnet Lab, Inc, Melbourne, FL
- Sponsoring Organization:
- USDOE - Office of Energy Research (ER); US - Atomic Energy Commission
- DOE Contract Number:
- FG02-99ER82730
- OSTI ID:
- 882407
- Report Number(s):
- DOE-ER82730-1
- Country of Publication:
- United States
- Language:
- English
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