11MeV low-energy magnifying pRad at CAEP ☆

To make a further improvement of resolution, the 11MeV low-energy pRad beamline at CAEP was rebuilt into a 1:3 magnifying imaging beamline recently. The principle of low-energy pRad and the design of magnifying pRad line are described in detail. By using magnetic imaging lens of magnification three, images are spread over larger area at image plane and the effect of optical system on spatial resolution limitation is weakened. According to the radiographing results, for 10μm thick aluminum object, spatial resolution less than 30μm is achieved on the new magnifying pRad beamline.