Status and performance of an AGATA asymmetric detector

A. J. Boston, M. R. Dimmock, C. Unsworttf, H C Boston, R. J. Coopef, A. N. Grinf, L J Harkness, I. H. Lazams, M. Jones, P J Nolan, D C Oxley, J. Simpson, M Slee

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Abstract

High-resolution gamma-ray detectors based on high-purity germanium crystals (HPGe) are one of the key workhorses of experimental nuclear science. The technical development of such detector technology has been dramatic in recent years. Large volume, high-granularity, electrically segmented HPGe detectors have been realised and a methodology to improve position sensitivity using pulse-shape analysis coupled with the novel technique of gamma-ray tracking has been developed. Collaborations have been established in Europe (AGATA) [1] and the USA (GRETA/GRETINA) [2] to build gamma-ray tracking spectrometers. This paper discusses the performance of the first AGATA (Advanced GAmma Tracking Array) asymmetric detector that has been tested at the University of Liverpool. The use of a fully digital data acquisition system has allowed detector charge pulse shapes from a selection of well defined photon interaction positions to be analysed, yielding important information on the position sensitivity of the detector.

Original languageEnglish
Pages (from-to)38-43
Number of pages6
JournalAIP Conference Proceedings
Volume1109
DOIs
Publication statusPublished - 2009
Externally publishedYes

Keywords

  • Digital acquisition
  • E-field simulation
  • Gamma-ray tracking
  • HPGe detectors
  • PSA

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