Conveners
Wed-Mo-Or12 - Flux Pump and Cryostats
- Timothy Coombs (University of Cambridge)
- Zhenan Jiang (Victoria University of Wellington)
Flux pump field magnets have the ability to generate high fields through avoiding utilizing current expensive high-current power supplies and warm-to-cold current leads. The resultant effect is that the purchase and running costs of high-field magnets will decrease substantially. Thus it is realistic to expect HTS flux pumped magnets to be available which could be installed widely enabling a...
This report details the design of and results from a fast-switching, high power density HTS switch. The switch design initially used commercially available second generation HTS tapes, with later prototypes using thin films of YBCO on sapphire. The method used to switch into the off-state is through application of an AC magnetic field to the superconductor, causing any transport current to...
Aiming to demonstrate the feasibility of a 10-kA class all-ReBCO based superconducting rectifier of the transformer-type, the development of high current ReBCO switches is crucial. A group of four switches in a bridge arrangement called switch-bridge has been developed. The switches are based on cyclic thermal heating of stacks of ReBCO tapes, operating in the 50 to 60 K temperature range when...
A straight forward solution to reduce the heat load of Current Leads to superconducting magnets operating at 4 K is the use of high temperature superconductors (HTS) thereby eliminating the ohmic heating at the 50-77 K range. The heat input from the current leads is then determined by heat conduction in the HTS section only, leading to some factor 10 reduction in the heat load in comparison to...
The Future Circular Collider (FCC) electron-positron version may be the next step towards a next generation of particle colliders. It may include an Experiment for probing ee+ collisions using the IDEA (International Detector for Electron positron Accelerator), or similar, detector requiring a solenoid enclosing the inner tracking detector. An innovative 2 T superconducting solenoid with 4 m...
In superconducting undulators (SCUs) that are currently operating at the Advanced Photon Source, the undulator magnets are indirectly cooled with liquid helium penetrating through channels in the magnet cores. The liquid helium is stored in a tank which is cooled by cryocoolers. However, a cryogen-free version of a superconducting undulator in which the undulator magnets are conduction-cooled,...
