The first operational prototype of a high-purity Germanium (HPGe) detector developed within the European LEAPS-INNOV project is presented in this work. This prototype features a monolithic, multi-element sensor optimized for high-resolution X-ray spectroscopy in the hard X-ray regime, capable of handling high count rates (20-250 kcps/mm2) across a broad energy range (5-100 keV). We discuss here a complete laboratory-based characterization of the detector's performance, as well as an on-beam evaluation at the BM05 beamline of the ESRF synchrotron facility, using monochromatic X-rays in the 20-50 keV energy range. We provide a detailed performance assessment that also includes a phenomenological defect-depth estimation model.
@article{arxiv.2512.08389,
title = {Development & first Performance evaluation of multi-element monolithic HPGe detector for X-ray spectroscopy},
author = {N. Goyal and F. J. Iguaz and S. Aplin and A. Balerna and P. Bell and J. Casas and M. Cascella and S. Chatterji and C. Cohen and E. Collet and E. N. Gimenez and H. Graafsma and H. Hirsemann and K. Klementiev and T. Kolodziej and T. Martin and R. H. Menk and C. Menneglier and C. Meraihia and J. R. Murias and M. Porro and M. Quispe and B. Schmitt and S. Scully and M. Turcato and C. Ward and E. Welter},
journal= {arXiv preprint arXiv:2512.08389},
year = {2025}
}