Detecting multi-hit events in a CdZnTe coplanar grid detector using pulse shape analysis: A method for improving background rejection in the COBRA 0 nu beta beta experiment

J. McGrath, B. R. Fulton, P. Joshi, P. Davies, D. Muenstermann, O. Schulz, K. Zuber, M. Freer

Research output: Contribution to journalArticlepeer-review


A number of experiments are underway to search for a rare form of radioactivity, neutrinoless double beta decay, as a measurement of the half-life would enable the neutrino mass to be determined. The COBRA collaboration [1,2] (Zuber, 2001: Dawson, 2009) employs CdZnTe detectors in such a search. This paper describes techniques using pulse shape analysis for identifying two-centre events in a coplanar grid CdZnTe detector. This enables Compton scatter events to be identified and so suppressing the background present within the COBRA detectors. (C) 2010 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)57-61
Number of pages5
JournalNuclear instruments & methods in physics research section a-Accelerators spectrometers detectors and associated equipment
Issue number1
Publication statusPublished - 21 Mar 2010


  • Neutrinoless double beta-decay
  • Coplanar CdZnTe
  • Background reduction

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