| | As the Nb cavity performance has reached close to its theoretical limit, higher Tc superconductors have been investigated for achieving SRF performance beyond Nb. In this talk, I will discuss the prospects of various materials for SRF applications, including Nb compounds, A15 compounds, high Tc superconductors, and MgB2. The high Tc and low resistivity of MgB2 make it particularly attractive as an SRF material, promising low BCS surface resistance and high critical field. Deposition technology is also available for coating the cavities. There are reasons to be optimistic about the prospect of MgB2 for SRF cavities. | |
