Performance considerations for gamma-ray tracking detectors
2004 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, Vol. 525, no 02-jan, 208-212 p.Article in journal (Refereed) Published
The newly developed Ge detector segmentation technology together with state-of-the-art digital signal processing allow to define the locations of gamma-ray interaction points as well as the deposited energies in these points. Using this information, it is possible to reconstruct the paths of gamma-rays that are fully absorbed by a Ge detector array. The sum of the deposited energies of the interaction points along a track gives the initial energy of the gamma-ray, whereas the kinematics of the scattering process provides information about its initial direction. At present a few gamma-ray tracking algorithms are under development. In this work, reconstruction results obtained with the backtracking algorithm are presented. The effect of an energy dependence of the position uncertainty on the reconstruction results is shown. An attempt to recover single photointeraction events is also presented. The influence of the atomic-electron momentum on the reconstruction performance in the backtracking and clusterisation algorithms is furthermore discussed.
Place, publisher, year, edition, pages
2004. Vol. 525, no 02-jan, 208-212 p.
gamma-ray tracking, gamma-ray spectroscopy, segmented germanium detectors, greta
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-23494DOI: 10.1016/j.nima.2004.03.047ISI: 000221974600042ScopusID: 2-s2.0-3342971302OAI: oai:DiVA.org:kth-23494DiVA: diva2:342192
QC 20100525 QC 20111018. International Conference on Imaging Techniques in Subatomic Physics, Astrophysics, Medicine, Biology and Industry. Stockholm, SWEDEN. JUN 24-27, 2003 2010-08-102010-08-102012-03-21Bibliographically approved