A5011888511- Physics of Superconductivity and Magnetism
- Magnetic and transport properties of perovskites and related materials
- Magnetic properties of thin films
- Advanced Condensed Matter Physics
- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Magnetic Properties of Alloys
- Particle Accelerators and Free-Electron Lasers
University of Cambridge
2016-2022
Thomas Jefferson National Accelerator Facility
2004
REBa <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> Cu xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">7-δ</sub> bulk superconductors are able to trap large magnetic fields and as a result they have potential work strong magnets. In this study, highly textured yttrium, gadolinium, samarium based cuprate were prepared using conventional top-seeded melt-textured growth, magnetized by...
One of the potential applications ring-shaped, single grain RE-Ba-Cu-O bulk superconductors is in desktop magnetic resonance imaging (MRI) and nuclear (NMR) systems as an alternative to conventional permanent magnets. The higher field available from magnetized could significantly improve performance such systems, well reduce their size increase portability. pulsed magnetization (PFM) method provides a fast, compact cost-effective for magnetizing these materials trapped However,...
One potential application of magnetized RE-Ba-Cu-O (where RE = rare earth or Y) bulk superconductors is as a high-field alternative to conventional permanent magnets in desktop NMR and MRI systems. Pulsed field magnetization (PFM) one the most promising practical methods magnetizing such bulks. However, trapped fields obtained by PFM are much lower than those using quasi-static like field-cooling (FCM) due heating during PFM. Furthermore, superconducting rings have proved more difficult...
(RE)-Ba-Cu-O ring bulks, used as trapped field magnets, show great promise a compact and lightweight source for generating the magnetic fields required nuclear resonance (NMR). The inhomogeneities introduced by growth process of such bulks pose challenge to uniformity NMR. In this study, we model stack with varying <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">ab</i> -plane inhomogeneity orientation investigate impact on profile following...
Abstract When used as trapped field magnets (TFMs), single grain, bulk high-temperature superconducting (HTS) rings are promising candidates for the generation of strong, uniform magnetic fields nuclear resonance. The pulsed magnetisation (PFM) technique provides a low cost, compact and portable method to magnetise these samples TFMs; however it has proven difficult achieve high in HTS using PFM. To date, record only 0.60 T been achieved magnetised by single-pulse PFM—compared with over 4...
Magnetic measurements have been performed on several families of dipoles for the 10 kW IR-FEL presently under construction at Thomas Jefferson National Accelerator Facility. The requirements these magnets include varying field strengths, large horizontal apertures and parts in 10,000 homogeneity as well setability core integrated field. Measurements were made to quantify according determine hysteresis protocol, ramp rate dependence, clamp settings that are used. This paper will describe...