Characteristics of GRIFFIN high-purity germanium clover detectors
physics.ins-det
/ Authors
U. Rizwan, A. B. Garnsworthy, C. Andreoiu, G. C. Ball, A. Chester, T. Domingo, R. Dunlop, G. Hackman, E. T. Rand, J. K. Smith
and 4 more authors
/ 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 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.