Design and test at room temperature of the first Silicon Drift detector with on-chip electronics.

The layout and the performance of the first silicon drift detector with on-chip electronics are presented. The peculiar characteristics of this device are the small detector capacitance and the direct integration of the front-end transistor on the detector chip. High resolution spectroscopy measurements carried out at room temperature are shown. The topology of a novel multianode drift detector suited for high count rate experiments is introduced.