The SiRi particle-telescope system

A silicon particle-telescope system for light-ion nuclear reactions is described. In particular, the system is optimized for level density and γ ‐ ray strength function measurements with the so-called Oslo method. Eight trapezoidal modules are mounted at 5 cm distance from the target, covering eight forward angles between θ = 40 ∘ and 54°. The thin front Δ E detectors ( 130 μ m ) are segmented into eight pads, determining the reaction angle θ for the outgoing charged ejectile. Guard rings on the thick back E detectors ( 1550 μ m ) guarantee low leakage current at high depletion voltage.