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LOPES is a digital antenna array at the Karlsruhe Institute of Technology,Germany, for cosmic-ray air-shower measurements. Triggered by the co-locatedKASCADE-Grande air-shower array, LOPES detects the radio emission of airshowers via digital radio interferometry. We summarize the status of LOPES andrecent results. In particular, we present an update on the reconstruction ofthe primary-particle properties based on almost 500 events above 100 PeV. WithLOPES, the arrival direction can be reconstructed with a precision of at least0.65{\deg}, and the energy with a precision of at least 20 %, which, however,does not include systematic uncertainties on the absolute energy scale. Formany particle and astrophysics questions the reconstruction of the atmosphericdepth of the shower maximum, Xmax, is important, since it yields information onthe type of the primary particle and its interaction with the atmosphere.Recently, we found experimental evidence that the slope of the radio lateraldistribution is indeed sensitive to the longitudinal development of the airshower, but unfortunately, the Xmax precision at LOPES is limited by the highlevel of anthropogenic radio background. Nevertheless, the developed methodscan be transferred to next generation experiments with lower background, whichshould provide an Xmax precision competitive to other detection technologies.

Cosmic Ray Measurements with LOPES: Status and Recent Results (ARENA 2012)