Characteristics of GRIFFIN high-purity germanium clover detectors.

Authors :: Rizwan, U.
Garnsworthy, A.B.
Andreoiu, C.
Ball, G.C.
Chester, A.
Domingo, T.
Dunlop, R.
Hackman, G.
Rand, E.T.
Smith, J.K.
Starosta, K.
Svensson, C.E.
Voss, P.
Williams, J.
Source :: Nuclear Instruments & Methods in Physics Research Section A. Jun2016, Vol. 820, p126-131. 6p.
Publication Year :: 2016
Abstract: 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 analog 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 in . × 3 in . NaI detector of 41(1)% at 1.3 MeV. [ABSTRACT FROM AUTHOR]