Additive Mabufacturing of 6GHz Seamless SRF Copper Cavities: Printing, Surface Treatments and Performance Investigations
Authors/Creators
-
1.
Istituto Nazionale di Fisica Nucleare, Sezione di Padova
- 2. INFN Sezione di Padova
- 3. Istituto di Ricovero e Cura a Carattere Scientifico Eugenio Medea
- 4. Laborarori Nazionali di Legnaro
- 5. INFN Legnaro
- 6. INFN Laboratori Nazionali di Legnaro
Description
Traditionally produced Superconducting Radio Frequency (SRF) cavities are characterized by many limiting
drawbacks, such as welding lines and poor reproducibility of their properties. Additive Manufacturing (AM), and in
particular Laser Powder Bed Fusion (LPBF), may overcome these issues: with this technology, it is possible to
create seamless components with reproducible characteristics. 6 GHz cavities cannot see internal supports because of
the impossibility to remove them mechanically. On the other hand, the down-skin self-supporting surfaces are ex-
tremely rough and unsuitable for the intended application. Indeed, very smooth surfaces are required since copper
cavities are internally coated with superconducting films (like Nb, Nb 3Sn, etc). In this work, several surface treat-
ments have been performed and studied; tests like tightness, resonant frequency and internal inspections have also
been carried out.
Files
Additive.pdf
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