Magnetics Business & Technology - Fall 2011 - (Page 17)

MAGNETS • MATERIALS • MEASUREMENT Design Tools Accelerate Production of Superconducting Magnet Systems Generally, Cryogenic uses its own in-house software to design the basic mechanical layout and coil structures of a magnet, fine tuning its field profile with magnetic material to meet the customer’s specific needs. The shape and placement of the magnetic pieces are critical to the magnet’s performance, and are determined through extensive electromagnetic field simulation. Following the initial design phase, the company employs Opera's 3D Modeler to create a very detailed geometric model of the proposed design, from which is generated a mesh of finite elements for numerical solution using the static electromagnetic field simulator. Until the advent of the latest version of the Opera3D Modeler, the finite element shapes were limited to tetrahedra, but can now include other shapes such as hexahedral, prism and pyramid elements as well. Cobham Technical Services uses the term ‘mosaic’ to define a mesh, which can include this mixture of element types. This advanced meshing feature helps Cryogenic to achieve the very high accuracy of simulation it needs much more quickly. According to Jonathan Cole, Magnet Consultant at Cryogenic, “The ability of Opera-3D Modeler to now handle hexahedra in conjunction with automatic tetrahedral meshing is extremely interesting. In the past we have handled this aspect of finite element analysis manually, using as many hexahedra as possible to secure the best accuracy. This is an extremely time-consuming process, with each iteration typically demanding overnight simulation. We now expect to produce even more accurate results Advanced electromagnetic simulation software is helping a producer of cryogenic equipment to speed the development of application-specific superconducting magnets for research. The software, the Opera 3D simulator, has been provided by Cobham Technical Services to Cryogenic Ltd. The package includes a suite of 3D electromagnetic design, simulation and analysis tools, plus a unique optimizer. This latter tool automatically employs multiple goal-seeking algorithms to eliminate the need for manual intervention when evaluating the best solution for a particular design. Cryogenic designs and manufactures a wide range of superconducting magnets and associated measurement systems for laboratory research and industrial uses worldwide. In addition to producing liquid helium cooled systems capable of generating magnetic fields as high as 22 Tesla, the company produces cryogen-free magnets with flux densities up to 20 Tesla. World leaders in magnetic measurement instruments www.bartington.com Precision Fluxgate Magnetometer Field Gradiometer System Borehole Magnetic Susceptibility Sonde Versatile Magnetic Susceptibility Meter Marine Gradiometer System High Resolution Declinometer/Inclinometer Field and Laboratory Sensors The Bartington range of magnetic measuring instruments includes gradiometers for archaeology, UXO detection, and pipe and cable location. Our magnetic susceptibility systems are ideal for environmental sciences and mineral exploration. We also supply a range of fluxgate magnetometers for high precision measurements. Bartington Instruments Limited 5 , 10 & 11 Thorney Leys Business Park Witney, Oxford, OX28 4GE, England. T: F: E: +44 1993 706565 +44 1993 774813 sales@bartington.com www.MagneticsMagazine.com Fall 2011 • Magnetics Business & Technology 17 http://www.bartington.com http://www.bartington.com http://www.MagneticsMagazine.com

Table of Contents for the Digital Edition of Magnetics Business & Technology - Fall 2011

Magnetics Business & Technology - Fall 2011
Table of Contents
Editor’s Choice
Integrated Design Tools for Low and High Temperature Superconducting Magnets
Special Report: Magnetics for Wind Power Technology
Research & Development
Magnets • Materials • Measurement
Application • Component Developments
Industry News
Marketplace
Calendar of Events
Advertising Index
Spontaneous Thoughts: Sputnik Moment: Revisited

Magnetics Business & Technology - Fall 2011