Conveners
Tailored Substrates for Advanced Film Growth
- Caroline Hain (CERN)
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Eduard Chyhyrynets (INFN - LNL)24/09/2026, 11:00Tailored Substrates for Advanced Film Growth
The performance of thin-film superconducting RF cavities is strongly dependent on the quality of the underlying copper substrate, whose surface morphology directly influences film growth, adhesion, and final RF behaviour. In the framework of thin-film R&D for future accelerators such as FCC-ee, achieving smooth, defect-free copper surfaces on full elliptical geometries is an essential...
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Tochukwu Emmanuel Ezeaba (University of Padua)24/09/2026, 11:25Tailored Substrates for Advanced Film Growth
In previous editions of this workshop, we demonstrated that Plasma Electrolytic Polishing (PEP) works well as a surface-finishing route for small niobium coupons, offering effective smoothing with environmentally benign electrolytes while avoiding aggressive HF-based acids. Scaling the process to larger surfaces, however, proved far less straightforward: results were inconsistent and difficult...
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Cristian Pira (INFN LNL)24/09/2026, 11:50Tailored Substrates for Advanced Film Growth
The fabrication of Superconducting Radio Frequency (SRF) cavities traditionally relies on forming and welding high-purity metal sheets, resulting in a local surface discontinuity that degrades the final SRF performance. In this work, we propose and explore a novel hybrid approach combining Wire Laser Additive Manufacturing (WLAM), with in situ CNC machining for the fabrication of mono-cell 1.3...
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Caroline Hain (CERN)24/09/2026, 12:10