Prior proton microscope

The new proton radiography facility PRIOR[2] (Proton microscope for FAIR) was developed at SIS-18 accelerator at GSI (Darmstadt, Germany). PRIOR setup is designed for measurement, with high spatial resolution up to 10 μm, of density distribution of static and dynamic objects by using a proton beam with energy up to 4.5 GeV. In the first experiments with static objects with 3.6 Gev proton, was demonstrated a spatial resolution of 30 μm. Dynamic commissioning was performed with target based on underwater electrical wires explosion with electrical pulse with current amplitude of ~200 kA and rise time ~1 μs.