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High-precision efficiency calibration of a high-purity co-axial germanium detector

Abstract : A high-purity co-axial germanium detector has been calibrated in efficiency to a precision of about 0.15% over a wide energy range. High-precision scans of the detector crystal and gamma-ray source measurements have been compared to Monte-Carlo simulations to adjust the dimensions of a detector model. For this purpose, standard calibration sources and short-lived on-line sources have been used. The resulting efficiency calibration reaches the precision needed e.g. for branching ratio measurements of super-allowed beta decays for tests of the weak-interaction standard model.
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Contributor : Michel Lion <>
Submitted on : Tuesday, April 8, 2014 - 7:03:22 PM
Last modification on : Tuesday, November 24, 2020 - 11:30:20 AM

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Bertram Blank, J. Souin, P. Ascher, L. Audirac, G. Canchel, et al.. High-precision efficiency calibration of a high-purity co-axial germanium detector. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2015, 776, pp.34-44. ⟨10.1016/j.nima.2014.12.071⟩. ⟨in2p3-00975582⟩

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