Conical Insert Design for the HZB Series-Connected Hybrid

• Published in: IEEE transactions on applied superconductivity Vol. 22; no. 3; p. 4301304
• Main Authors: Jingping Chen, Bird, M. D., Bole, S., Gavrilin, A., White, M.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.06.2012; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Assembly; Coils; Cooling; Design engineering; Design. Technologies. Operation analysis. Testing; Electrical engineering. Electrical power engineering; Electromagnets; Electron tubes; Electronics; Exact sciences and technology; Finite element analysis; Fluid dynamics; Fluid flow; high field solenoids; hybrid magnet; Inserts; Integrated circuits; Magnetic fields; Magnetomechanical effects; Neutron scattering; resistive magnet; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Stress; Superconducting magnets; Superconductivity; Various equipment and components; Series connection; Cooling; Thermal management (packaging); Magnet; hybrid magnet; high field solenoids; Experimental study; Conical configuration; Finite element method; Solenoid; Neutron scattering; Cooling system; High field; Finite element analysis; Magnetic field; resistive magnet
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/TASC.2011.2177796

The National High Magnetic Field Laboratory (NHMFL) is designing series-connected hybrid magnets for the Helmholtz Center Berlin (HZB). The hybrid has a horizontal, conical warm bore with a 30 degree opening angle for neutron scattering experiments. The resistive insert includes two coils. The outer coil is a regular bitter coil, while the inner one has a varied inner radius to meet the requirement of large opening angle. Such technology as in the inner coil was developed in the NHMFL, and called Florida conical bitter technology. The conical configuration makes the cooling hole length varied with radius causing unique hydraulic design challenge. This paper presents the detail design features of the conical insert along with many analysis results.