Conveners
Latest Advances in Nb Thin Film Technology
- Walter Venturini Delsolaro (CERN)
Latest Advances in Nb Thin Film Technology
- Walter Venturini Delsolaro (CERN)
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Anne-Marie Valente-Feliciano (Jefferson Lab)21/09/2026, 14:00
Deposition of high-purity niobium (Nb) thin films onto copper (Cu) substrates provides a direct path to Deposition of high-purity niobium thin films onto copper substrates bypasses the high material costs and thermal stability limits of bulk niobium for superconducting radio-frequency cavities, yet achievable accelerating gradients remain hindered by premature vortex entry and high-field...
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Hayato Araki (KEK)21/09/2026, 14:30Latest Advances in Nb Thin Film Technology
KEK and CERN are conducting collaboration research to fabricate superconducting RF cavities by hydroforming. To date, several 1.3 GHz single‑cell cavities have been produced and their performance measured. It is well known that hydroforming an elliptical cavity causes substantial plastic deformation, which degrades the surface roughness. We are investigating how improving the surface finish of...
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Caroline Hain (CERN)21/09/2026, 15:00Latest Advances in Nb Thin Film Technology
Superconducting radiofrequency (SRF) niobium-on-copper (Nb/Cu) cavities are a key enabling technology for meeting the performance requirements of the Future Circular Collider (FCC). Within the ongoing CERN R&D programme, substantial progress has been made on 1.3 GHz test cavities through optimisation of Nb film deposition via high power impulse magnetron sputtering (HiPIMS), including the use...
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21/09/2026, 16:00
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Christopher Benjamin (STFC)Latest Advances in Nb Thin Film Technology
Superconducting Radio Frequency (SRF) thin-film research at Daresbury Laboratory has made significant progress in both niobium (Nb) and alternative material depositions. Historically, these efforts were limited to $7.8\text{ GHz}$ planar samples and $6\text{ GHz}$ closed-cell cavities. This talk presents a major scale-up in capability: the commissioning of a new $1.3\text{ GHz}$ cavity...
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