Nb3Sn performance in RF fields is limited to fields far below its superheating critical field. Poor thermal conductivity of Nb3Sn has been speculated to be the reason behind this limit. In order to better understand the contribution of Nb3Sn thermal conductivity to its RF performance, we simulated numerically with Matlab program*(based on SRIMP and HEAT codes) the limiting fields under different realistic conditions. Our simulations indicate that limiting fields observed presently in the experiments with RF fields cannot be explained by the thermal impedance of Nb3Sn alone. The results change significantly in the presence of higher losses due to extrinsic mechanisms.
@article{arxiv.2104.01267,
title = {Simulations of $Nb_{3}Sn$ Layer RF Field Limits Due to Thermal Impedance},
author = {Paulina Kulyavtsev and Grigory Eremeev and Sam Posen},
journal= {arXiv preprint arXiv:2104.01267},
year = {2021}
}