Applications of superconducting magnets occur across many areas of science and engineering. This seminar encompasses developments in many of the fields of engineering associated with superconductivity.
At the lower end of the magnetic range, a new generation of quantum sensors measuring down to femto Tesla are being developed with new applications emerging. A range of materials work on next generation superconductors is focused on engineering devices working at higher temperatures or at extremely high magnetic fields. Some next generation magnet systems under development using this underpinning superconductor technology are emerging or already established. At the upper end of the magnetic range, the detector and the beam shaping magnets for CERN accelerators are of great interest and the active development of fusion technology around the world completes the picture for a wide ranging seminar.
IMPORTANT ATTENDANCE INFORMATION
Please note that Culham Conference Centre is situated at Culham Science Centre which is a secure site and all external visitors must sign in at the main gate reception and produce a form of identification – passport or driving licence is preferred.
If you wish to attend this event you must register online and bring a form of ID. We have to submit delegate details 48 hours prior to arrival. If you leave it less than 48 hours before the event or turn up on the day, you will not be able to gain access to the secure site.
The venue is at Culham Science Centre, Oxfordshire.
More information on finding the venue is available here, or on Google maps.
The dress code for the day is business attire / smart casual.
High Field Superconducting Magnets
by Dr Andrew Twin of Oxford Instruments Nanoscience
Research using superconducting magnets has become diverse and wide ranging. In recent times, the field of quantum information processing (QIP) requires user friendly, ultra low temperatures coupled with high magnetic fields. This has led to a range of cryogen free magnets integrated onto dilution refrigerators operating up to 18 Tesla. More traditional, liquid Helium filled cryostats are used to study samples in very high magnetic fields. Some of the development work enabling ultra high fields (>25 Tesla) is described.
Bulk, Melt Processed (RE)BCO Superconductors for High Field Applications
by Prof David Cardwell of Cambridge University
(RE)-Ba-Cu-O [(RE)BCO, where RE = rare earth element such as Y, Nd, Sm, Eu, Gd, etc.] high temperature superconductors (HTS) have significant potential for high field engineering applications at 77 K when fabricated in the form of large single grains by the so-called top seeded melt growth process (TSMG). A novel Y2Ba4CuMOy (Y-2411, where M = U, Zr, Hf, Nb, Ta, W and Mo) phase that is effective at pinning magnetic flux quanta in bulk (RE)BCO HTS on the nm scale has been developed at Cambridge with a number of desirable properties, including crystallographic compatibility with the superconducting (RE)Ba2Cu3O7 (RE-123) phase, chemical stability at the melt processing temperature and an ability to resist coarsening during the melt process. This novel phase, which is more effective at pinning flux than the RE2BaCuO5 (RE-211) phase produced as a by-product of the melt growth process, has been used to develop a practical processing method for the fabrication in air of large, single grain RE-Ba-Cu-O superconductors. The process also includes a new type of generic seed crystal (Mg-doped NdBCO) that can promote effectively the epitaxial nucleation of any (RE)-Ba-Cu-O system and secondly by suppressing the formation of (RE)/Ba solid solution in a controlled manner within large (RE)BCO grains processed in air. This process has enabled fabrication of single grain samples of GdBCO that exhibit a record trapped field of 17.6 T at 26 K. Recent further developments in infiltration and growth, multi-seeding techniques for the fabrication of larger sample of conformal geometry and a practical pulsed field magnetization of bulk single grains has improved further the prospects of these technologically important materials for practical applications, which will also be presented.