Measurements with a Si-strip telescope

Abstract

A tracking station composed of silicon strip sensors was designed, built and tested. It is a beam telescope equipped with four boxes containing single-sided and double-sided silicon strip sensors. The boxes can be moved along the longitudinal direction and one of them can be rotated to vary the angle on incidence of the beam relative to the face of the sensor. These features allow to study in detail the effects of changes in the setup on energy loss, cluster size and resolution. The tracking station was used with particle beams at different facilities (COSY, DESY, ELSA). A selection of scatterers has been placed in the center of the station and the consequent deflection angle distributions were measured. This system allowed to tune the simulation of low-energy hadron interactions with the material of a silicon tracking detector. Furthermore, light materials such as carbon foams with different densities and compositions were characterized during these tests. Analyses of measured data were compared with Monte Carlo simulations of the experimental setup.