Details

Autor(en) / Beteiligte

• Ebert, J
• Gosling, C
• Gehre, D
• Hagner, C
• Heidrich, N
• Klingenberg, R
• Kroninger, K
• Nitsch, C
• Oldorf, C
• Quante, T
• Rajek, S
• Rebber, H
• Rohatsch, K
• Tebruegge, J
• Temminghoff, R
• Theinert, R
• Timm, J
• Wonsak, B
• Zatschler, S
• Zuber, K

Titel

Long-term stability of underground operated CZT detectors based on the analysis of intrinsic super(113)Cd beta super(-)-decay

Ist Teil von

• Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2016-06, Vol.821, p.109-115

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The COBRA collaboration operates a demonstrator setup at the underground facility Laboratori Nazionali del Gran Sasso (LNGS, located in Italy) to prove the technological capabilities of this concept for the search for neutrinoless double beta-decay. The setup consists of 64 (111) cm super(3) Cadmium-Zinc-Telluride (CZT) detectors in Coplanar-Grid (CPG) configuration. One purpose of this demonstrator is to test if reliable long-term operation of CZT-CPG detectors in such a setup is possible. The demonstrator has been operated under ultra low-background conditions for more than three years and collected data corresponding to a total exposure of 218 kg days. The presented study focuses on the long-term stability of CZT detectors by analyzing the intrinsic, fourfold forbidden non-unique super(113)Cd single beta-decay. It can be shown that CZT detectors can be operated stably for long periods of time and that the super(113)Cd single beta-decay can be used as an internal monitor of the detector performance during the runtime of the experiment.