Münster 2017 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 27: Poster

HK 27.53: Poster

Dienstag, 28. März 2017, 16:45–18:45, F Foyer

A high density readout system for TREX at MINIBALL — •Christian Berner, Christoph Berger, Shawn Bishop, Michael Böhmer, Roman Gernhäuser, Stefanie Hellgartner, Ralf Lang, Lukas Werner, and Sonja Winkler — Technische Universität München, Physik-Department

TREX is a versatile silicon detector for measuring transfer and Coulex reactions with heavy, neutron-rich beams at CERN/ISOLDE. It is an array of position-sensitive ΔE-E-detector telescopes in a compact setup, covering 66% of the full solid angle. Currently the resolution of reconstructed energies and the efficiency of the setup is limited by the angular resolution, the trigger threshold, and the electronics noise. An upgrade of the silicon sensors using highly segmented d=100µm thick DSSDs with 100µm pitch with a high density readout system using an ASIC-based solution with calorimetric performance is discussed. The SKIROC2-ASIC offers - despite of its low ENC, the possibility to have an analogue, as well as a fully digitized readout. Its large dynamic range and the ability to power-pulse the different ASIC-stages only during the beam pulses are perfect features for TREX at ISOLDE. System control, trigger and readout of the new detector array will be implemented on a FEBEX-based data-platform, also used for the surrounding Germanium-array MINIBALL. We will present the detection concept, first prototype test and the performance estimations from Geant4 simulations. This work is supported by BMBF (05P15WOCIA).