Paper 13093-259
Paper 13093-259
Exploring the impact of total ionizing dose on the LAD detectors leakage current
On demand | Presenting live 19 June 2024 
Abstract
The Large Area Detector (LAD) is based of linear Silicon Drift Detectors (SDD) for space-borne spectral-timing studies in the 2–30 keV energy range, currently foreseen on board of the eXTP and STROBE-X (although with a different name, HEMA) space missions. Due to the harsh particle environment in a low Earth orbit, it will be subject to radiation damage in the form of both displacement damage and Total Ionizing Dose (TID). To evaluate the response of the LAD sensor technology to TID, we exposed a prototype of a LAD detector to a 60Co source for a total of 85 krad. Afterwards, a thorough study of the dependence of the damage-induced leakage current on the temperature was carried out. This allowed us to evaluate the contribution of TID to the end-of-life performance of the instrument.
Presenter
Giovanni Della Casa
INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Giovanni Della Casa is a first year postdoc at INAF-IAPS in Rome. His main field of research concerns the characterization of silicon-based detectors for space-borne missions aiming at exploring the high energy astrophysics (X and gamma energies). In particular, he is involved in the HERMES Pathfinder mission, for the study of a novel detector suitable for nanosatellites, and the eXTP mission, employing state-of-the-art large area silicon detectors. For the HERMES Pathfinder mission he also developped tools for the temporal analysis of Gamma-Ray Bursts. He has a good experience in the development of experimental setup, also through simulation tools for preliminary analysis, data analysis, and radiation campaign.