This example combines features from the "Fast Simulation" and the "TCAD Field Simulation" examples. The setup consists of six telescope planes of Timepix-type detectors for reference tracks and a device under test (DUT), in this case a CLICpix2 detector, in the center of the telescope between the two arms. The goal of this setup is to demonstrate how to perform a fast simulation on the telescope planes while maintaining a high precision on the DUT.