Pierini, P. Bertucci, M. Bosotti, A. Chen, J.F. Gresele, A. Maiano, C.G. Michelato, P. Monaco, L. Moretti, M. Pagani, C. Paparella, R. Pierini, P. Rizzi, M. Sertore, D. Vogel, E. JACoW Geneva, Switzerland 978-3-95450-178-6 10.18429/JACoW-SRF2015-THPB035 English 1162-1165 THPB035 cavity controls operation linac status Contribution to a conference proceedings 2015 2015-12 http://dx.doi.org/10.18429/JACoW-SRF2015-THPB035 http://srf2015.vrws.de/papers/thpb035.pdf One batch of 10 cavities has been completed and eight structures have been installed in the 3.9 GHz cryomodule for the European XFEL Injector operation. A second batch of 10 RF structures for a spare injector module is under fabrication. The fabrication has been performed according to the European Pressure Vessel regulations, as needed for the EXFEL operation. This paper describes the fabrication, quality control/assurance procedures and frequency preparation steps in order to achieve cavities at the correct frequency and length within the specifications.