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Characterization of high-purity, multi-segmented germanium detectors

Abstract : Recent developments of electrical segmentation of HPGe detectors, coupled with digital electronics have led to promising applications such as γ-ray tracking, γ-ray imaging or low-background measurements which will benefit from a fine knowledge of the detector response. The IPHC has developed a new scanning table which uses a collimated γ-ray beam to investigate the detector response as a function of the location of the γ-ray interaction. It is designed to use the Pulse Shape Comparison Scan technique, which has been simulated in order to prove its efficiency. An AGATA detector has been thoroughly scanned. 2D classical scans brought out, for example, local charge collection modification effects such as charge sharing, due to the segmentation. For the first time, a 3D, complete pulse-shape database has been established. It will especially allow to improve the overall AGATA array performances.
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  • HAL Id : tel-01560205, version 1

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Michaël Ginsz. Characterization of high-purity, multi-segmented germanium detectors. Atomic Physics [physics.atom-ph]. Université de Strasbourg, 2015. English. ⟨NNT : 2015STRAE047⟩. ⟨tel-01560205⟩

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