Detection system of the COMBAS fragment separator

The (Δ E 1 , Δ E 2 , E ) multidetector telescope has been developed and tested. The telescope is a compact combination of two 32-strip silicon Δ E 1 -, Δ E 2 -detectors and a scintillation E -detector, which is a 3 × 3 array of CsI(Tl) crystals. A timing signal can be obtained from any of the Si detectors for time-of-flight (TOF) measurements. Single-channel and 32-channel charge-sensitive preamplifiers have been developed and manufactured for the multidetector module to serve the Δ E - and E -detectors with high efficiency and sensitivity. Reaction products obtained in the 40 Ar (35 MeV/nucleon) + 9 Be reaction have been unambiguously identified in the experiment by mass number A and atomic number Z .