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arXiv · 2407.09185

Silicon drift detectors for the Spectroscopy Focusing Array of eXTP

A. Altmann·T. F. Bechteler·R. Strecker·P. Lechner·R. Andritschke·G. Hauser·C. Fiorini·K. Nandra
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Abstract

We present a silicon drift detector (SDD) system for the spectroscopy focusing array (SFA) of the enhanced X-ray timing and polarimetry (eXTP) mission. The SFA focuses on fast timing (time resolution below 10 {\mu}s) and good spectroscopy capabilities (energy resolution better than 180 eV @ 6 keV). The sensor, consisting of 19 hexagonally shaped pixels with a total sensitive area of ${5.05}\, cm^{2}$, is connected to three high time resolution spectroscopy (HTRS) ASICs, allowing a fast readout of the detector signals. The detector works in a Charge- Sensitive Amplifier configuration. We assembled a prototype detector module and present here its mechanical design, describe the used sensor, and report about its performance.

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A. Altmann, T. F. Bechteler, R. Strecker, P. Lechner, R. Andritschke, G. Hauser, C. Fiorini, K. Nandra. 2024-07-12. Silicon drift detectors for the Spectroscopy Focusing Array of eXTP. https://arxiv.org/abs/2407.09185

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