Sierra, S. Amal, Y. Chahbazian, M.E. De_Oliveira, J.G. Goeury, A.G. Lievin, Ch.L. Nennig, L.J. Petitjean, S.P. Yao Leclerc, I. Status and Results Obtained on a RF Conditioning Test Bench for 704 MHz Couplers in the Frame of ESS Project JACoW Publishing Geneva, Switzerland 2226-0366 978-3-95450-194-6 10.18429/JACoW-LINAC2018-THPO093 English 895-897 THPO093 klystron status high-voltage cathode site Contribution to a conference proceedings 2019 2019-01 https://doi.org/10.18429/JACoW-LINAC2018-THPO093 http://jacow.org/linac2018/papers/thpo093.pdf Thales and Gerac are developing a test bench able to make the RF conditioning of the Fundamental Power Couplers at 704 MHz in the frame of the ESS project for CEA. The status of the developments of the test bench is described including the modulator, klystron and all relative equipments. The paper will also describes the results obtained at the date of presentation.