1. Target configuration: dust projectiles enter a small aperture within a tube and impact onto a thin bar. 2. Target configuration: dust projectiles impact an inclined metal plate above the centrifuge directly (no reaccretion due to gravity). 3. Target configuration: in a first step a), the local mass distribution is probed by measuring the masses inside neighboring tubes, which collect all of the dust. In a second step b), the mass of an aggregate grown on an exposed target is measured with calibration tubes collecting dust at the same time.