JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF
AU - Pompeo, N.
AU - Alimenti, A.
AU - Celentano, G.
AU - Flükiger, R.
AU - Pinto, V.
AU - Rizzo, F.
AU - Silva, E.
AU - Spina, T.
AU - Torokhtii, K.
ED - Saito, Kenji
ED - Xu, Ting
ED - Sakamoto, Naruhiko
ED - Lesage, Ana
ED - Schaa, Volker R.W.
TI - Surface Impedance of Nb₃Sn and YBa₂Cu₃O_{7-δ} in High Magnetic Fields
J2 - Proc. of SRF2021, East Lansing, MI, USA, 28 June-02 July 2021
CY - East Lansing, MI, USA
T2 - International Conference on RF Superconductivity
T3 - 20
LA - english
AB - New potential rf applications of superconductors emerged with the need to operate in high dc magnetic fields (up to 16 T) where vortex motion dictates the response: the beam screen coating of the Future Circular Collider (FCC) [1] and haloscopes, i.e. rf cavities for the axions detection [2]. However, very few data are available in the required regimes. We present in this work measurements of the surface impedance Z up to 12 T on bulk Nb₃Sn and YBCO thin films grown by different techniques. The measurements are performed with a dielectric loaded resonator operating at 15 GHz. We obtained the vortex motion resistivity and extracted the high frequency vortex motion parameters [3]: the depinning frequency, the flux-flow resistivity and the pinning constant, as well as their temperature and field dependences. Substantial differences are highlighted in the high frequency pinning properties of the studied materials, providing useful information on possible improvements in view of applications. A comparison with the results obtained in the microwave frequency range at lower fields (up to 1 T) is given.
PB - JACoW Publishing
CP - Geneva, Switzerland
SP - 416
EP - 420
KW - impedance
KW - cavity
KW - radio-frequency
KW - collider
KW - electron
DA - 2022/10
PY - 2022
SN - 2673-5504
SN - 978-3-95450-233-2
DO - doi:10.18429/JACoW-SRF2021-TUPFDV007
UR - https://jacow.org/srf2021/papers/tupfdv007.pdf
ER -