Characterization of a large CdZnTe coplanar quad-grid semiconductor detector

J. Ebert; D. Gehre; C. Gößling; C. Hagner; N. Heidrich; R. Klingenberg; K. Kröninger; C. Nitsch; C. Oldorf; T. Quante; S. Rajek; H. Rebber; K. Rohatsch; J. Tebrügge; R. Temminghoff; R. Theinert; J. Timm; B. Wonsak; S. Zatschler; K. Zuber

doi:10.1016/j.nima.2015.09.116

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arXiv · 1509.02361

Characterization of a large CdZnTe coplanar quad-grid semiconductor detector

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Abstract

The COBRA collaboration aims to search for neutrinoless double beta-decay of $^{116}$Cd. A demonstrator setup with 64 CdZnTe semiconductor detectors, each with a volume of 1cm$^3$, is currently being operated at the LNGS underground laboratory in Italy. This paper reports on the characterization of a large (2 $\times$ 2 $\times$ 1.5)cm$^3$ CdZnTe detector with a new coplanar-grid design for applications in $\gamma$-ray spectroscopy and low-background operation. Several studies of electric properties as well as of the spectrometric performance, like energy response and resolution, are conducted. Furthermore, measurements including investigating the operational stability and a possibility to identify multiple-scattered photons are presented.

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J. Ebert, D. Gehre, C. Gößling, C. Hagner, N. Heidrich, R. Klingenberg, K. Kröninger, C. Nitsch, C. Oldorf, T. Quante, S. Rajek, H. Rebber, K. Rohatsch, J. Tebrügge, R. Temminghoff, R. Theinert, J. Timm, B. Wonsak, S. Zatschler, K. Zuber. 2015-09-08. Characterization of a large CdZnTe coplanar quad-grid semiconductor detector. https://doi.org/10.1016/j.nima.2015.09.116

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