Superconducting Quantum Systems
For over a century cryogenic engineering and material science has been a technological catalyst for innovation and scientific discovery. In this special focus session, we highlight a rapidly developing field garnering global attention for its ability to revolutionize computation, communications, and sensing. Superconducting quantum systems have unique requirements of sustained sub-50mK operation where there exists more than a decade of literature demonstrating substantial non-equilibrium effects as well as dramatic deviations in materials performance at microwave frequencies. Furthermore, device integration is complicated by extremely stringent device architectures requirements that must be fully characterized at sub-50mK temperatures. This session has brought together leading experts in superconducting quantum systems to present and discuss the state of the art in cryogenic materials science, integration, and device development.
CEC and ICMC Joint Panel Session: Hydrogen Technologies for Transportation
The development of hydrogen based propulsion is accelerating worldwide for transportation industries including aviation, space, trucking, marine, and railway. The potential benefits of utilizing liquid hydrogen combined with and without superconducting technologies is increasingly being studied for aviation and other aerospace applications. A growing interest worldwide in using liquid-H2 fuels is also generating interest in cryogenic-compatible electric power system devices and technologies.
This session is being is being organized to present about high-level aspects and impacts of cryogenic hydrogen technologies for transportation; including devices, and system-level-integration issues, cryo-cooling and cryo-fuels, and logistics and supporting technologies. Two Joint Panel Sessions are being planned, tentatively scheduled for one in the morning and one in the evening of Thursday, July 22 all day.
The development of electric propulsion is accelerating worldwide for transportation industries including aviation, space, trucking, marine, and railway. And the potential benefits of utilizing cryogenic/superconducting technologies is also increasingly being supported by ARPA-E, Airbus, NASA, and others. This Special Session is being organized to consider subsystems and components needed for transportation, including motors, generators, inverters, transmission cables, connectors, busbars, current protection devices, circuit breakers, energy storage, fuel cells using cryo-fuels, ion propulsion, magnetohydodynamics (MHD), shielding and high-field magnets for aerospace, specialized materials, and misc other; schedule and times TBD.
LTS and HTS Fusion Cables
Fusion energy is a source of unlimited and clean energy. The ITER is set to be completed and new high-field high temperature superconductors (HTS) based compact reactors are being pursued at both private sectors and public institutions. High current superconducting cables are needed for large scale fusion magnet applications to lower coil inductance and ensure that large magnet systems such as TF, CS and PF coils are protected during quench and fast current discharges. This Special Session is being organized to discuss recent advancements and challenging issues in high current LTS and HTS cable development for the design and construction of next step fusion reactors. A particular interest is on the exciting research with HTS cables and cooling methods for DEMO and compact fusion pilot plants beyond ITER.
Electromechanical Behaviors of HTS Conductors for Applications
This session is being organized to consider all aspects of mechanical properties of HTS conductors (wires/tapes/cables) relevant for magnet applications. The session will examine effects of stresses and strains, including fatigue, on superconducting properties such as critical currents. The session will cover emerging topics including screening current induced mechanical stress, stress/strain distribution in composite coil structures, edge damages due to mechanical slitting of REBCO coated conductors, emerging round REBCO conductors, and high strength, reinforced Bi-2212 round wires.
Additive manufacturing (AM) is recognized as a potential technology to design and create complex geometries and a fast track to build prototype components. AM technologies have made inroads in several applications ranging from science to industry. New aspects come into focus regarding specific material behavior, quality control, cost-effectiveness, etc. Cryogenic applications encompassing application areas of magnets, rotating machines, medical, energy, mobility, aeronautics, superconducting circuits, and electronics are transforming the energy, materials, and R&D sectors. Materials used in cryogenic, vacuum, and high energy flux environments have specific functional requirements with respect to design, microstructure, precision, and surface finishing. This special session will highlight AM for different applications drawing attention to the benefits, challenges, and areas that need research to advance this versatile technology.
Latest Development in Flux Pinning and Critical Currents
Pinning of quantized magnetic vortices in superconductors enables high critical current densities by orders of magnitudes at applied magnetic fields up to few to tens of Tesla, which are demanded for practical applications, such as large magnets, rotary machines (motors and generators), devices/systems for power grids (cables, fault current limiters, transformers), to name a few. The recent progress in nanoscience and nanotechnology has prompted tremendous success in enhancing pinning force density and efficiency through various novel approaches in terms of generation of artificial pinning centers (APCs) with precisely controlled dimension, morphology, orientation, concentration and APC/superconductor interface. This focus session of the Latest Developments in Flux Pinning and Critical Currents intends to provide a platform for updates of the recent progress made and the critical issues that still remain; and for stimulating fruitful discussions, generating new ideas, and strengthening and/or establishing existing and/or new collaborations in this important field.