A5071521855- Physics of Superconductivity and Magnetism
- Magnetic and transport properties of perovskites and related materials
- Superconducting Materials and Applications
- ZnO doping and properties
- Magnetic Field Sensors Techniques
- Quantum and electron transport phenomena
- Particle Detector Development and Performance
- Magnetic properties of thin films
- Superconductivity in MgB2 and Alloys
University of Twente
2017-2023
Abstract Re BCO racetrack coils may be used in high-dynamic superconducting linear motor systems, typically replacing either permanent- or electromagnets the DC stator. Even so, order to achieve a significant increase force density, superconductor needs carry high transport current while simultaneously experiencing time-varying magnetic field from copper mover coils. To aid with design of such devices, 2D numerical model has been developed that predicts AC loss under motor-relevant...
Abstract No-insulation coils are self-protecting and can therefore generally be operated at higher current densities. However, the electrical turn-to-turn connections may cause additional AC loss when charging coil or it is exposed to a time-dependent magnetic field. In this work, we study case of no-insulation Re BCO tape racetrack uniform field applied parallel surface. We show that an anisotropic continuum model allows formulate analytical approximations for coupling in low-...
Abstract Re BCO coils are developed as DC field in linear motor systems to increase the force density, favor of permanent magnets. Such have sustain a relatively large heat load stemming from AC magnetic environment which they operate. The use no or partial turn-to-turn insulation can make them more stable against effects local heating. Conversely, radial electrical connections no-insulation (NI) allow for coupling currents, causing additional loss on top already significant load. Here we...
A few hundred temperature sensors are used to monitor the behavior of gigantic ATLAS toroid superconducting magnet system during cool down and normal operation.In order guarantee good sensitivity measurements in range from liquid helium room temperature, two types positioned at same location: platinum resistance thermometers for 30-300 K carbon composition resistors (Allen-Bradley) 4-30 range.Both very well known use cryogenics they have performed satisfactorily 10 year operation.The...