Characterization of a new generation of silicon detector: The SIRIUS side 'Strippy-Pad' detector

摘要

SIRIUS (Spectroscopy & Identification of Rare Isotopes Using S3) is a detection system designed for the focal plane of S3 (the Super Separator Spectrometer), which is part of the SPIRAL2 (Systeme de Production d'Ions RAdioactifs en Ligne de 2e generation) facility at GANIL (France). This study presents the characterization of the Side silicon detector of SIRIUS. This new "Strippy-pad" detector design benefits from an ultra-high resistivity and the windowless technique from Micron Semiconductor Ltd. These detectors were tested at the IPHC Strasbourg on a dedicated test bench with custom fast preamplifiers coupled to digital electronics cards. Combining all these elements, we obtained resolutions as good as 13.6 keV for certain pixels of this detector for 8.8 MeV alpha particles, with an average resolution measured at 14.7 keV over the whole detector.