The micro-vertex-detector of the PANDA experiment at FAIR

The “AntiProton ANnihilations at DArmstadt”—experiment, PANDA, is one of the main experiments of the “Facility for Antiproton and Ion Research” (FAIR) which replaces and extends the existing GSI-facility at Darmstadt. imary physics goals include precision spectroscopy of charmonium states, establishment of gluonic excitations, the study of modifications of meson properties in the nuclear medium, and precision γ -ray spectroscopy of single and double hypernuclei. ny of these physics’ goals an identification of D-mesons via the detection of a secondary vertex with a decay length in the order of 100 μ m is essential. Therefore, a special micro-vertex-detector (MVD) is foreseen which allows precise tracking of all charged particles. id pixel solution was chosen as a baseline concept for the Panda MVD to accommodate the high radiation dose and the required time resolution. To clarify the requirements for the hybrid pixel detector, a Geant4 based simulation was performed using a detector geometry optimized for low radiation length. The design of the detector and the simulation results will be presented in this paper.