Proceedings, 8th International Particle Accelerator Conference (IPAC 2017)
8th International Particle Accelerator Conference (IPAC 2017), Copenhagen, Denmark, May 14-19, 2017
The final steps in the manufacturing of a superconducting RF cavity involve careful tuning before the final welds to match the target frequency as fabrication tolerances may introduce some frequency deviations. The target frequency is chosen based on analysis of the shifts induced by remaining processing steps including acid etching and cool down. The baseline fabrication of a DQW crab cavity for the High Luminosity LHC (HL-LHC) envisages a first tuning before the cavity subassemblies are welded together. To produce a very accurate final result, subassemblies are trimmed to frequency in the last machining steps, using a clamped cavity assembly for RF measurements. This paper will describe the trim tuning of one of the SPS prototype DQW crab cavities fabricated by Niowave.
Original Publication Citation
Verdu-Andres, S., Skaritka, J., Wu, Q., Ratti, A., Baurac, S., Boulware, C., . . . Park, H. (2017). Trim tuning of a SPS-series DQW crab cavity prototypes. Paper presented at the 8th International Particle Accelerator Conference, Copenhagen, Denmark. http://accelconf.web.cern.ch/AccelConf/ipac2017/doi/JACoW-IPAC2017-MOPVA143.html
Verdú-Andrés, S.; Skaritka, J.; Wu, Q.; Ratti, A.; Baurac, S.; Boulware, C. H.; Grimm, T.; Yancey, J.; Clemens, W.; McEwen, E. A.; and Park, H., "Trim Tuning of SPS-Series DQW Crab Cavity Prototypes" (2017). Physics Faculty Publications. 325.