Thick Film Morphology and SC Characterizations of 6 GHz Nb/Cu Cavities

Thick films deposited in long pulse DCMS mode onto 6 GHz copper cavities have demonstrated the mitigation of the Q-slope at low accelerating fields. The Nb thick films (~40 microns) show the possibility to reproduce the bulk niobium superconducting properties and morpholo-gy characterizations exhibi...

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Detalles Bibliográficos
Autores principales: Garcia Diaz, Vanessa, Azzolini, Oscar, Chyhyrynets, Eduard, Fonnesu, Dorothea, Keppel, Giorgio, Kugeler, Oliver, Pira, Cristian, Stivanello, Fabrizio, Tikhonov, Dmitry, Valizadeh, Reza, Vogel, Michael, Zanierato, Matteo
Lenguaje:eng
Publicado: 2022
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.18429/JACoW-SRF2021-SUPCAV007
http://cds.cern.ch/record/2846168
Descripción
Sumario:Thick films deposited in long pulse DCMS mode onto 6 GHz copper cavities have demonstrated the mitigation of the Q-slope at low accelerating fields. The Nb thick films (~40 microns) show the possibility to reproduce the bulk niobium superconducting properties and morpholo-gy characterizations exhibited dense and void-free films that are encouraging for the scaling of the process to 1.3 GHz cavities. In this work a full characterization of thick films by DC magnetometry, computer tomography, SEM and RF characterizations are presented.

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