Position sensitivity of the proposed segmented germanium detectors for the DESPEC project
2009 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, Vol. 604, no 1/2, 56-59 p.Article in journal (Refereed) Published
The DESPEC HPGe array is a part of the NuSTAR project at FAIR, Germany. It is aimed at the spectroscopy of the stopped decaying exotic nuclei. Segmented gamma-ray tracking detectors are proposed for this array in order to maximize detection efficiency and background suppression when searching for very rare events. Two types of detector modules-stacks of three 16-fold segmented planar crystals and 12- and 16-fold segmented clover detectors-have been investigated and compared from the point of view of the achievable position resolution using pulse shape analysis (PSA). To this end, detector signals from realistic gamma-ray interactions have been calculated. These signals were treated by PSA in order to reconstruct the photon interaction locations. Comparing the initial interaction locations to the reconstructed ones, it was found that the double-sided strip planar detector yielded position reconstruction errors at least a factor 2 lower than the other detectors considered
Place, publisher, year, edition, pages
2009. Vol. 604, no 1/2, 56-59 p.
DESPEC, Segmented germanium detector, Pulse shape analysis, Matrix method
IdentifiersURN: urn:nbn:se:kth:diva-11998DOI: 10.1016/j.nima.2009.01.080ISI: 000267405700017ScopusID: 2-s2.0-65749100014OAI: oai:DiVA.org:kth-11998DiVA: diva2:292895
QC 20110211(8th International Conference on Position Sensitive Detectors Univ Glasgow, Glasgow, SCOTLAND, SEP 01-05, 2008) 2010-02-102010-02-102011-03-11Bibliographically approved