5 years ago

Characteristics of GRIFFIN high-purity germanium clover detectors.

C. Andreoiu, J.K. Smith, R. Dunlop, T. Domingo, J. Williams, C.E. Svensson, P.Voss, A. Chester, K. Starosta, G.C. Ball, A.B. Garnsworthy, E.T. Rand, G. Hackman, U. Rizwan

The Gamma-Ray Infrastructure For Fundamental Investigations of Nuclei, GRIFFIN, is a new experimental facility for radioactive decay studies at the TRIUMF-ISAC laboratory. The performance of the 16 high-purity germanium (HPGe) clover detectors that will make up the GRIFFIN spectrometer is reported. The energy resolution, efficiency, timing resolution, crosstalk and preamplifier properties of each crystal were measured using a combination of analogue and digital data acquisition techniques. The absolute efficiency and add-back factors are determined for the energy range of 80 - 3450 keV. The detectors show excellent performance with an average over all 64 crystals of a FWHM energy resolution of 1.89(6) keV and relative efficiency with respect to a 3"x3" NaI detector of 41(1)% at 1.3 MeV.

Publisher URL: http://arxiv.org/abs/1711.05287

DOI: arXiv:1711.05287v1

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