Wijethunga, S.A.K. Benesch, J. F. Delayen, J.R. Hannon, F.E. Krafft, G.A. Mamun, M.A. Poelker, M. Suleiman, R. JACoW Publishing Geneva, Switzerland 978-3-95450-184-7 10.18429/JACoW-IPAC2018-THPAK071 English 3395-3397 THPAK071 Contribution to a conference proceedings 2018 2018-06 https://doi.org/10.18429/JACoW-IPAC2018-THPAK071 http://jacow.org/ipac2018/papers/thpak071.pdf Electron cooling of the ion beam plays an important role in electron ion colliders to obtain the required high luminosity. This cooling efficiency can be enhanced by using a magnetized electron beam, where the cooling process occurs inside a solenoid field. This paper compares the predictions of ASTRA and GPT simulations to measurements made using a DC high voltage photogun producing magnetized electron beam, related to beam size and rotation angles as a function of the photogun magnetizing solenoid and other parameters.