In-beam measurement of the position resolution of a highly segmented coaxial germanium detector

M. Descovich, I. Y. Lee, P. Fallon, M. Cromaz, A. O. MacChiavelli, D. C. Radford, K. Vetter, R. M. Clark, M. A. Deleplanque, F. S. Stephens, D. Ward

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Abstract

The position resolution of a highly segmented coaxial germanium detector was determined by analyzing the 2055 keV γ-ray transition of Zr90 excited in a fusion-evaporation reaction. The high velocity of the Zr90 nuclei imparted large Doppler shifts. Digital analysis of the detector signals recovered the energy and position of individual γ-ray interactions. The location of the first interaction in the crystal was used to correct the Doppler energy shift. Comparison of the measured energy resolution with simulations implied a position resolution (root mean square) of 2 mm in three-dimensions.

Original languageEnglish
Pages (from-to)535-542
Number of pages8
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume553
Issue number3
DOIs
StatePublished - Nov 21 2005

Funding

This work was supported under the US Department of Energy contract Nos. DE-AC03-76SF00098 (Lawrence Berkeley National Laboratory), W-7405-Eng-48 (Lawrence Livermore National Laboratory), and DE-AC05-00OR22725 (Oak Ridge National Laboratory).

FundersFunder number
U.S. Department of EnergyDE-AC03-76SF00098
Oak Ridge National Laboratory
Lawrence Berkeley National LaboratoryDE-AC05-00OR22725, W-7405-Eng-48

    Keywords

    • Digital electronics
    • Position resolution
    • γ-Ray tracking

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