Lechartier, M. Ferdinand, R. Leyge, J.F. Beam Loading with the First Rebuncher of Spiral2, First Measurements JACoW Publishing Geneva, Switzerland 2226-0366 978-3-95450-194-6 10.18429/JACoW-LINAC2018-TUPO095 English 546-549 TUPO095 cavity simulation controls experiment linac Contribution to a conference proceedings 2019 2019-01 https://doi.org/10.18429/JACoW-LINAC2018-TUPO095 http://jacow.org/linac2018/papers/tupo095.pdf In the SPI2 project the middle energy line (LME) is equiped with a radio frequency qupole and three Rebunchers. The subject of this article is to measure and characterise the effect of the beam loading on the first Rebuncher cavity.