Vadim Chamritski

Superconducting electric motors offer the potential for low weight and high power in applications such as electric aircraft and high speed marine transport. Combined with renewably-sourced cryogenic fuels and advanced fuel cells they offer a path to zero-carbon mass transport. The proposed architectures of these extreme machines, operating at tempe...

We have previously reported the development of a cryogen-free critical current characterization system able to measure field-angle dependences of voltage-current characteristics of short-length superconducting tapes to temperatures of 25 K, fields up to 8 T and currents up to 875 A. We have now extended the existing system and built a parallel syst...

The increasing commercial availability of High-Tc Superconducting (HTS) wire in the decade following the discovery of this amazing class of materials opened the door to a range of unique application opportunities. The early international focus was on the power industry with a promise of a significant transformation in efficiency and supply security...

We report the design and testing of a compact 0.8-T magnet for X-ray magnetic scattering and X-ray magnetic circular dichroism experiments; the magnet can be physically rotated around a stationary sample to provide field rotation in the plane of the sample. Taking an H-frame design split horizontally in the sample plane, the resulting optical acces...

Over the last decade significant progress has been made in the commercialization of HTS magnets, paralleling the improvements in wire performance and quality. In this chapter, we review the development at HTS-110 of magnets for synchrotron and neutron beamlines which leverage the benefits of high current density relative to copper and a relatively...

We have developed a cryogen-free critical-current (Ic) measuring system comprising a conduction-cooled 8 T HTS magnet and convection-cooled sample, both cooled by commercial cryocoolers. The sample can be rotated and transport currents of up to 800 A delivered with less than 0.5 K temperature rise during the Ic measurement. The system is automated...

A 1.5 T magnet suitable for magnetic resonance imaging has been designed and constructed. The magnet uses 4.8 km of Y-Ba-Cu-O (YBCO) high temperature superconductor conductor sourced from AMSC. The conductor was wound into 16 double pancake coils distributed to achieve a magnetic field, which may be passive shimmed to ±20 ppm over a 120-mm-diameter...

Integrating UHV (ultra high vacuum) and superconducting magnets poses special challenges to the magnet designer. A range of HTS (High Temperature Superconducting) magnets have been developed for UHV synchrotron beamline applications providing users with compact powerful cryogen-free solutions. Recent examples include HTS magnets for LARIAT (Large A...

A commercial HTS magnet was designed, built and tested by HTS-110 Ltd for X-ray Magnetic Circular Dichroism (XMCD) experiments. The magnet was integrated with a XMCD UHV (Ultra High Vacuum) chamber and installed at an existing soft X-ray beamline at Singapore Synchrotron Light Source (SSLS). The dipole magnet has a bore of 40 mm in diameter and a g...

Two world-first High-Tc Superconducting (HTS) beamline magnets have been designed, manufactured and commissioned for synchrotron and neutron research facilities. One, for the Hahn-Meitner Institut, is for use with their high-resolution diffraction and resonant magnetic scattering instrument MAGS at the Berlin electron synchrotron facility BESSY. Th...

We report the development of a laboratory electromagnet utilizing high temperature superconducting (HTS) coils which is designed to generate fields in excess of 3 Tesla, but with power consumption and size significantly below that possible with copper-wound coils for an equivalent useful field volume. The components are complete and the system is c...

We report the design and construction of a laboratory electromagnet utilizing HTS coils in an iron yoke with a magnetic flux density of 3.5 Tesla in a 50-mm air-gap. With continuing improvement in the performance of HTS ``BSCCO'' wire, several niche HTS magnet applications have become viable at current wire prices. In this instance, the HTS conduct...