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Pulse-Shape Analysis and position resolution in highly segmented HPGe AGATA detectors

  • Regular Article - Experimental Physics
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Abstract.

The performance of the Pulse-Shape Analysis (PSA) in AGATA HPGe detectors was investigated and improved employing a \(\gamma\)-ray source measurement based on \( e^{+}e^{-}\) annihilation radiation after decays of 22Na by \( \beta^{+}\) decay. The first interaction positions of the two 511keV \(\gamma\) rays were determined and the connecting line of these two positions was compared to the known source position as a measure for the PSA performance. The position resolution and its dependence on the PSA parameters were investigated by varying most relevant input quantities: the charge carrier mobility of the holes, the response of the employed measuring electronics especially the preamplifier rise time. The relative statistical weight of charge signals and transient signals was scrutinized. The optimal distance metric of the grid-search algorithm and its impact on the position resolution were determined.

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Authors and Affiliations

  1. University of Cologne, Institut für Kernphysik, Zülpicher Strasse 77, 50937, Köln, Germany

    L. Lewandowski, P. Reiter, B. Birkenbach, B. Bruyneel, J. Eberth & H. Hess

  2. Grand Accélérateur National d’Ions Lourds, Boulevard Henri Becquerel, 14000, Caen, France

    E. Clement, C. Michelagnoli & H. Li

  3. Instituto de Fisica Corpuscular, CSIC-Universitat de Valencia, E-46920, Valencia, Spain

    R. M. Perez-Vidal

  4. CEA Saclay, Service de Physique Nucleaire, 91191, Gif-sur-Yvette, France

    M. Zielinska

Authors
  1. L. Lewandowski
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  2. P. Reiter
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  3. B. Birkenbach
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  4. B. Bruyneel
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  5. E. Clement
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  6. J. Eberth
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  7. H. Hess
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  8. C. Michelagnoli
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  9. H. Li
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  10. R. M. Perez-Vidal
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  11. M. Zielinska
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Corresponding author

Correspondence to P. Reiter.

Additional information

Communicated by C. Ur

Data Availability Statement

This manuscript has no associated data or the data will not be deposited. [Authors’ comment: All data generated during this study are contained in this published article.]

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Lewandowski, L., Reiter, P., Birkenbach, B. et al. Pulse-Shape Analysis and position resolution in highly segmented HPGe AGATA detectors. Eur. Phys. J. A 55, 81 (2019). https://doi.org/10.1140/epja/i2019-12752-0

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  • DOI: https://doi.org/10.1140/epja/i2019-12752-0

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