Measurement of the cosmogenic activation of germanium detectors in EDELWEISS-III

2016/07/15 by the EDELWEISS Collaboration, E. Armengaud, The EDELWEISS Collaboration +100 · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Instrumentation and Detectors (physics.ins-det) #Nuclear Experiment (nucl-ex) #Particle Detector Development and Performance #astro-ph.CO #hep-ex #nucl-ex #physics.ins-det

paper · pdf · doi:10.48550/arxiv.1607.04560

arxiv created 2016/07/15 · openalex publication_date 2016/07/15 · arxiv updated 2016/07/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present a measurement of the cosmogenic activation in the germanium cryogenic detectors of the EDELWEISS III direct dark matter search experiment. The decay rates measured in detectors with different exposures to cosmic rays above ground are converted into production rates of different isotopes. The measured production rates in units of nuclei/kg/day are 82 ± 21 for ³H, 2.8 ± 0.6 for ⁴⁹V, 4.6 ± 0.7 for ⁵⁵Fe, and 106 ± 13 for ⁶⁵Zn. These results are the most accurate for these isotopes. A lower limit on the production rate of ⁶⁸Ge of 74 nuclei/kg/day is also presented. They are compared to model predictions present in literature and to estimates calculated with the ACTIVIA code.

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