Characterization of a gamma-ray tracking array: A comparison of GRETINA and Gammasphere using a 60Co source

T. Lauritsen, A. Korichi, S. Zhu, A. N. Wilson, D. Weisshaar, J. Dudouet, A. D. Ayangeakaa, M. P. Carpenter, C. M. Campbell, E. Clément, H. L. Crawford, M. Cromaz, P. Fallon, J. P. Greene, R. V.F. Janssens, T. L. Khoo, N. Lalović, I. Y. Lee, A. O. Macchiavelli, R. M. Perez-VidalS. Pietri, D. C. Radford, D. Ralet, L. A. Riley, D. Seweryniak, O. Stezowski

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

In this paper, we provide a formalism for the characterization of tracking arrays with emphasis on the proper corrections required to extract their photopeak efficiencies and peak-to-total ratios. The methods are first applied to Gammasphere, a well characterized 4π array based on the principle of Compton suppression, and subsequently to GRETINA. The tracking efficiencies are then discussed and some guidelines as to what clustering angle to use in the tracking algorithm are presented. It was possible, using GEANT4 simulations, to scale the measured efficiencies up to the expected values for the full 4π implementation of GRETA.

Funding

This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics , under contract number DE-AC02-06CH11357 . This research used resources of the ANL's ATLAS facility, which is a DOE Office of Science User Facility. LBNL is supported by the U.S. Department of Energy under Contract No. DE-AC02-05CHI1231 and L. Riley acknowledges support from NSF through grant no. PHY-1303480 . This work was also supported by the French National Center of Research, CNRS . D.R. was partially supported by the P2IO Excellence Laboratory . We acknowledge valuable discussions with J. Ljunvall and A. Lopez-Martens.

Keywords

  • Efficiency measurements
  • GRETA
  • GRETINA
  • Gammasphere
  • Nuclear structure
  • Segmented germanium detectors
  • γ-Ray spectroscopy
  • γ-Ray tracking

Fingerprint

Dive into the research topics of 'Characterization of a gamma-ray tracking array: A comparison of GRETINA and Gammasphere using a 60Co source'. Together they form a unique fingerprint.

Cite this