The silicon tracker of the H1 detector

The H1 experiment at HERA is equipped with a silicon vertex detector, comprising a barrel part and two endcaps with disks. The barrel part uses double sided, DC coupled strip sensors, whereas the endcap parts use two types of wedge-shaped sensors, both single sided and AC coupled: u / v -sensors have strips parallel to one edge of the sensor, r-sensors have circular strips. Additional pad detectors provide fast triggering signals in the backward part.