Speaker
Description
STFC Daresbury Laboratory recently completed the build of a Radio Frequency Dipole (RFD) crab cavity cryomodule prototype for the Super Proton Synchrotron (SPS), and the Double Quarter Wave (DQW) series build is currently underway. A key challenge was the leak testing of 34 unique weld configurations which could not be tested in the typical evacuation method.
A suite of 3D printed weld test tools mixing aluminium and SLA 3D printing were developed and reported on, with major savings to time and cost and improved quality of leak testing tooling, whilst maintaining a baseline leak rate of >5.00e-12 mbar L/s at, or below, 1.00e-3 mbar*.
STFC has continued to develop this promising technique expanding to fully 3D printed geometries and structures. This paper will report on the development and results from fully 3D printed vacuum chambers, its cleanroom compatibility, and general vacuum characteristics.
Footnotes
*"Development of SLA 3D printed volumes for leak testing of LHC Hi-Lumi cryomodules at STFC"
February 2025Vacuum 234(5):114090
DOI: 10.1016/j.vacuum.2025.114090
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