Orateur
Description
"The demonstration of all-superconducting high field DC magnets, such as the 32+ T magnets developed at several high field labs, have been motivating research in high-temperature superconducting coated conductors for very high-field applications. Artificial pinning centers (APC) have enabled strong increase of the in-field critical current, yet the limit of vortex pinning in superconductors at fields above 40 T is almost uncharted territory.
Here, I will present our latest results on the development of a technique to measure superconducting critical currents in pulsed magnetic field up to 60 T at the LNCMI facility in Toulouse. Current pulses of up to 400 mA with a duration of a few microseconds to a few milliseconds can be used to measure the current-voltage characteristic in magnetic fields up to 60 T, and in temperatures down to 1.5 K, in narrow bridges of a few 10s of μm wide and a few mm to cm in length."