Dependence of the residual surface resistance of superconducting RF cavities on the cooling dynamics around $T_{\mathrm{c}}$

A. Romanenko, A. Grassellino, O. Melnychuk +1

We report a strong effect of the cooling dynamics through $T_{\mathrm{c}}$ on the amount of trapped external magnetic flux in superconducting niobium cavities. The effect is similar…