Evaluation of Geometrical Precision and Surface Roughness Quality for the Additively Manufactured Radio Frequency Quadrupole Prototype
Authors/Creators
- 1. RTU, Riga, Latvia
- 2. CERN, Geneva, Switzerland
- 3. Universite Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
- 4. Rösler Italiana s.r.l., Concorezzo, Italy
- 5. Fraunhofer IWS, Dresden, Germany
- 6. TalTech, Tallin, Estonia
- 7. TRUMPF, Ditzingen, Germany
- 8. Polimi, Milano, Italy
Description
A multidisciplinary collaboration within the I.FAST project teamed-up to develop additive manufacturing (AM) technology solutions for accelerators. The first prototype of an AM pure-copper radio frequency quadrupole (RFQ) has been produced, corresponding to 1/4 of a 4-vane RFQ*. It was optimised for production with state-of-the-art laser powder bed fusion technology. Geometrical precision and roughness of the critical surfaces were measured. Alt-hough the obtained values were beyond standard RFQ specifications, these first results are promising and con-firmed the feasibility of AM manufactured complex cop-per accelerator cavities. Therefore, further post-processing trials have been conducted with the sample RFQ to im-prove surface roughness. Algorithms for the AM techno-logical processes have also been improved, allowing for higher geometrical precision. This resulted in the design of a full 4-vane RFQ prototype. At the time of the paper submission the full-size RFQ is being manufactured and will undergo through the stringent surface quality meas-urements. This paper is discussing novel technological developments, is providing an evaluation of the obtained surface roughness and geometrical precision as well as outlining the potential post-processing scenarios along with future tests plans.
Files
IPAC22_Torims.pdf
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