High Purity Germanium (HPGe) and BGO: Difference between revisions

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[[File:LabeledDetector.png|thumb|A clesup of BGO and HPGe in a detector. ]]
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Gammasphere's detectors use high purity germanium in order to increase a detector's probability of gamma ray interaction. The germanium used within each detector produces ten different [[Detector Signals|signals]] known as the GeCenter, GeSide and 7 BGO signals, which are compacted by the analog pre-processing into four differential signals (GeCenter, GeSide, BGOSum & BGOPattern).
Image:LabeledDetector.png|500px|thumb|Figure 1. A closeup of BGO and HPGe in a detector.  
poly 66 150 128 80 374 286 445 365 424 393 170 226 [[Gammasphere Detectors]]
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Gammasphere's detectors use high purity germanium in order to increase a detector's probability of gamma-ray interaction. BGO (Bismuth Germanate) detectors surround each Ge Detector in Gammasphere to help with Compton scattering suppression. They form a hexagonal shape around the cylindrical Ge, and have an additional BGO "backplug", meaning each detector has 7 BGO contacts. Each detector produces ten different [[Detector Signals|signals]] for the [[DAQ system]] known as the GeCenter, GeSide and 7 BGO signals, which are compacted by the analog pre-processing into four differential signals (GeCenter, GeSide, BGOSum & BGOPattern). Note that in figure 1, the actual outer portion of the detector has sides that are made up of a metal called hevimets, which are dense materials that form a shield around the Ge at a detector's point. The hexagonal closeup in the diagram shows the arrangement of Ge and BGO inside the detector.


BGO (Bismuth Germanate) detectors surround each Ge Detector in Gammasphere to help with Compton scattering suppression. They form a hexagonal shape around the cylindrical Ge, with each of the BGO sides producing its own signal. Furthermore, there is a BGO "backplug" which goes behind the Ge piece and also has its own signal, meaning the DAQ accounts for seven BGO signals.
 
 
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Latest revision as of 19:25, March 6, 2023

Gammasphere Detectors
Figure 1. A closeup of BGO and HPGe in a detector.

Gammasphere's detectors use high purity germanium in order to increase a detector's probability of gamma-ray interaction. BGO (Bismuth Germanate) detectors surround each Ge Detector in Gammasphere to help with Compton scattering suppression. They form a hexagonal shape around the cylindrical Ge, and have an additional BGO "backplug", meaning each detector has 7 BGO contacts. Each detector produces ten different signals for the DAQ system known as the GeCenter, GeSide and 7 BGO signals, which are compacted by the analog pre-processing into four differential signals (GeCenter, GeSide, BGOSum & BGOPattern). Note that in figure 1, the actual outer portion of the detector has sides that are made up of a metal called hevimets, which are dense materials that form a shield around the Ge at a detector's point. The hexagonal closeup in the diagram shows the arrangement of Ge and BGO inside the detector.


Go back to Gammasphere Detectors

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