Speaker
Description
Using 4-µm-thick REBCO film and optimal film composition, we had demonstrated critical currents as high as 1,836 A/4mm at 4.2 K, 20 T (Jc = 11.5 MA/cm2). Recently, we scaled up this process to 50-m-lengths to achieve 1,274 A/4 mm at 4.2 K, 20 T (Jc = 8 MA/cm2) which about 70% of the short-sample champion value. Achieving uniform, repeatable and high in-field critical current over long tape lengths requires excellent control of pinning landscape in these high-performance tapes made by our advanced metal organic chemical vapor deposition (MOCVD) process. The A-MOCVD technique provides an opportunity to double the high critical currents by simultaneous double-sided deposition. Our progress in these areas will be described in this presentation.
This work was supported by awards DE-EE0007869 from the US Department of Energy (DOE) Advanced Manufacturing Office, DE-AR0001374 from Advanced Research Projects Agency-Energy (ARPA-E), DE-SC0016220 from the DOE Office of High Energy Physics, and N68335-21-C-0525 from Naval Air Systems Command (NAVSEA) through AMPeers LLC.
