A high rate, low radiation length Micro-Vertex-Detector for the P¯ANDA experiment

The Micro-Vertex-Detector (MVD) of the P¯ANDA experiment is the innermost tracking detector. Its most challenging task is the identification of D-meson pairs by their delayed decay point which is about 100– 500 μ m from the production point. In addition to the necessary high spatial resolution, it needs a time resolution on the order of 10 ns, a moderate radiation hardness, an untriggered readout of hit data up to 500 MBit/s and a low radiation length. To meet these challenging requirements an intense R&D program is ongoing on all parts of the MVD. This article gives an overview of the ongoing technical developments with a focus on the pixel part of the project.