Development of gamma-ray tracking detectors

The next generation of 4 pi arrays for high-precision gamma -ray spectrosco py AGATA will consist of gamma -ray tracking detectors. They represent high -fold segmented Ge detectors and a front-end electronics, based on digital signal processing techniques, which allows to extract energy, timing and sp atial information on the interactions of a gamma -ray in the Ge detector by pulse shape analysis of its signals. Utilizing the information on the posi tions of the interaction points and the energies released at each point the tracks of the gamma -rays in a Ge shell can be reconstructed in three dime nsions on the basis of the Compton-scattering formula.