Applications of pulse-shape analysis to HPGe gamma-ray detectors
The authors are engaged in a program of applying digital pulse-shape analysis to high-purity germanium (HPGe) gamma-ray detectors for applications in Compton suppression and gamma-ray imaging. Here, the authors present the most recent results in Compton suppression and also outline the current work in gamma-ray imaging. Current work is focusing on applying HPGe pulse-shape analysis techniques to gamma-ray imaging. The idea is to obtain the r,{phi},z coordinates of each gamma-ray interaction for a given event. This would be done using the technique of Ref. 1 to obtain radial information and a segmented outer contact to obtain azimuthal and depth information. By analyzing the generated pulse shapes, one can use a maximum-likelihood algorithm to achieve a position resolution better than the segment size. Once the interaction point locations for a given even are known, and the points are time ordered, standard Compton camera-imaging techniques can be used to create (over many events) an image. Experimental work is now proceeding to measure three-dimensional position resolution with the 36-fold segmented GRETA prototype at Lawrence Berkeley Laboratory.
- Research Organization:
- Lawrence Livermore National Lab., CA (US)
- OSTI ID:
- 20005810
- Journal Information:
- Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 81; ISSN 0003-018X; ISSN TANSAO
- Country of Publication:
- United States
- Language:
- English
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