Conveners
Sat-Mo-Po.04 - Protection and Stability
- Darren Woulfe (Commonwealth Fusion Systems)
- Trevor Miller (Sumitomo (SHI) Cryogenics Europe Ltd)
High-temperature superconducting (HTS) coated conductors (CCs) have become increasingly available for high-field magnet applications, thanks to continual advancements in manufacturing. Previous studies have revealed that HTS CCs, characterized by their anisotropic lattice structures, exhibit a critical current density that strongly depends on the angle between the magnetic field and the tape...
At the beginning of the next long shutdown, foreseen mid 2026, the Large Hadron Collider (LHC) will have been in operation for almost 20 years. After this time lapse, the operation of the present Energy Extraction (EE) systems, that are part of the protection of the superconducting circuits of the LHC, will present significant challenges. . As many system components will have exceeded their...
During the operation of rotating motors based on superconducting coils, impregnation is used to enhance the mechanical integrity against rotational vibration and to protect the superconducting coils from mechanical disturbances in strong magnetic fields. Generally, epoxy resin is primarily used for high-temperature superconducting (HTS) coil impregnation because of its low cost, excellent...
The fabrication of superconducting coils using high-temperature superconductor (HTS) tape necessitates the use of soldering processes to join sections of tape or to connect the tape to the current lead. During this process, flux is commonly used to remove the oxide layer from the copper stabilizer to improve the soldering quality. However, residual flux remaining on the surface or permeating...
The design and development of quench detection for the CFETR TF prototype coil is in progress, which is expected to be completed in the fourth quarter of 2025. According to the quench simulation analysis, the voltage detection with a threshold of 200 mV and a delay of 2 s satisfies the quench detection design criteria, that is, the hotspot temperature is less than 150 K. The foundation of a...
To achieve magnetic fields above 20 T in modern magnets for fusion devices and high-energy physics accelerators, the use of high-temperature superconductors (HTS) at low temperatures below 20 K is proposed. In recent years, there has been active development of increasingly larger HTS coil systems. However, as the size of the magnets increases, the issues of stability and protection for these...
