In heavy-ion fusion (HIF),longitudinal beam compression is expected to be used in the final stage of accelerators to increase the beam power to TW levels.However,abrupt beam manipulation with a large velocity tilts during the compression process may induce a dissipation of beam kinetic energy to thermal energy through strong space-charge effects.To investigate this dissipation process,we proposed a scaled experiment using a compact and flexible simulator device based on electron beams [1].Because of the small inertia and the large specific charge of electrons,GeV-kA heavy-ion beams (typical in HIF schemes) can be scaled down to keV-mA electron beams.