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  Digital signal processing for segmented HPGe detectors preprocessingalgorithms and pulse shape analysis

Lauer, M. (2004). Digital signal processing for segmented HPGe detectors preprocessingalgorithms and pulse shape analysis. PhD Thesis, Dissertation, Ruprecht-Karls Universität, Heidelberg.

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Lauer-diss.pdf (beliebiger Volltext), 13MB
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 Urheber:
Lauer, Martin1, Autor           
Affiliations:
1Prof. Dirk Schwalm, Emeriti, MPI for Nuclear Physics, Max Planck Society, ou_907546              

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 Zusammenfassung: MINIBALL is an versatile spectrometer consisting of 24 longitudinally six-fold segmented HPGe detectors, build for the efficient detection of rare γ decays in nuclear reactions of radioactive ion beams. MINIBALL was the first spectrometer equipped with digital electronics. Pulse shape analysis algorithms to determine the interaction position of γ -rays were implemented on a Digital Signal Processor and validated in an experiment using a collimated γ -ray source. Emphasis was placed on the properties of the different digital signal processing algorithms, the consequences for the implementation and the applicability for position determination. The next generation of γ -ray spectrometers will consist of highly segmented HPGe detectors equipped with digital electronics, resulting in a more than ten-fold increase in complexity compared to current spectrometers. To enable the construction of a γ -ray tracking spectrometer, new and powerful digital electronics will be developed. Preprocessing algorithms, giving the γ -ray energy and generating event triggers, were implemented on a VME module equipped with fast A/D converters and tested with different detectors and sources. Emphasis was placed on the detailed simulation and understanding of the algorithms as well as the influence of electronics and detector onto the energy resolution.

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Sprache(n): eng - English
 Datum: 2004-10-20
 Publikationsstatus: Angenommen
 Seiten: 203 S. : Ill., graph. Darst. + 1 CD-ROM
 Ort, Verlag, Ausgabe: Heidelberg : Dissertation, Ruprecht-Karls Universität
 Inhaltsverzeichnis: -
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 Identifikatoren: eDoc: 204313
 Art des Abschluß: Doktorarbeit

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