Cryocoolers are used in space instruments to cool detectors and superconducting devices to cryogenic temperatures. Inside a cryocooler, a flexure spring is used to ensure the cryocooler piston is axially free to move but is radially restricted, preventing off-axes forces that could cause piston contact with the sides of the cylinder, which is the primary cause for failure in a space...
Niobium plays a critical role in a range of cryogenic applications, including superconducting magnets, superconducting radio frequency (SRF) cavities, and cryogenic electronics, owing to its superior superconducting properties, high strength, and excellent resistance to embrittlement. Although tension, compression, and the shear behavior of niobium has been studied at cryogenic temperatures,...
REBCO high-temperature superconductor tapes offers remarkably high critical current density in high magnetic fields. It has been used successfully in ultra-high field superconducting magnets. To address the challenge of high mechanical stress in these magnets, co-winding REBCO tapes with insulated stainless-steel tapes has emerged as a promising technique to enhance their overall performance....
In recent years, 3-D printing has gained widespread popularity as a cost-effective method for rapid prototyping across various fields. The emergence of new materials has broadened the potential applications of 3-D printing, such as opto-mechanical supports in cryogenic environments. However, many of these materials lack defined thermal and mechanical properties under cryogenic conditions. This...
Depositions of superconducting Nb3Sn (Tc ~18K) layers on Cu is a promising approach to developing superconducting radio frequency (SRF) cavities comprising the next generation's high-efficiency linear accelerators operating at 4K. This technology can significantly reduce costs beyond the 2K state-of-the-art Nb-based technology. Developments in physical and chemical vapor depositions of...
