Belloni, F. Abbon, P. Benedetti, F. Coulloux, G. Gougnaud, F. Lahonde-Hamdoun, C. Le Bourlout, P. Mariette, Y. Marroncle, J. Mols, J.-Ph. Nadot, V. Scola, L. Thomas, C.A. JACoW Publishing Geneva, Switzerland 978-3-95450-201-1 10.18429/JACoW-IBIC2018-WEOC04 English 371-374 WEOC04 space-charge electron simulation proton HOM Contribution to a conference proceedings 2019 2019-01 https://doi.org/10.18429/JACoW-IBIC2018-WEOC04 http://jacow.org/ibic2018/papers/weoc04.pdf Five Ionization Profile Monitors are being built by CEA in the framework of the in-kind contribution agreement signed with ESS. The IPMs will be installed in the Cold Linac where the proton energy range they need to cover extends from 90 MeV to 2 GeV. The ESS fields intensity of 1.10⁺⁰⁹ protons/bunch delivered at a frequency of 352 or 704 MHz, with a duty cycle of 4%, may strongly affect the trajectories of the ionized molecules and electrons created by the passage of the beam through the residual gas. In order to quantify and to develop a correction algorithm for these space charge effects, a code was initiated at ESS and completed at CEA Saclay with the possibility to include real case electric fields calculated with Comsol Multiphysics. A general overview of the code and its preliminary results are presented here.