The aim is to report experimental results on low energy medium current electron beams in a better agreement with space charge model. The experiments were performed using a laboratory installation specially designed for electron beam (EB) diagnosis and dynamics referred to as DIADYN. It includes a vacuum electron source, a beam channel consisting of two axially symmetric magnetic lenses, as well as two beams profile monitors. Our previously reported investigations were focused on the nondestructive beam diagnosis at the source exit and on the beam dynamics in the transport channel. In the present work we report on hardware adjustments of the EB channel that led to a better agreement between calculated and experimental data. DIADYN proved to be a suitable educational tool for an in depth understanding of EB physical and engineering aspects.

Keywords: Low energy electron beams, Beam channel adjustments.