Abstract
The electrical characteristics of the beveled-edge and reach-through APD structures are theoretically and experimentally analyzed to determine which is most suitable for incorporation into a Positron Emission Tomography (PET) detector. The beveled edge structure is found to have a lower excess noise factor and lower dark current, leading to a superior signal-to-noise ratio. The reach-through structure is found to have a lower operating voltage and faster speed of response. Because signal-to-noise ratio is fundamentally important to achieving the energy and timing resolutions required for PET detectors, we believe the beveled-edge structure is more appropriate than the reach-through structure for PET applications. This finding is experimentally verified by comparing the performance of several commercially available beveled-edge and reach-through APDs.
| Original language | English |
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| Pages | 1864-1868 |
| Number of pages | 5 |
| State | Published - 1995 |
| Externally published | Yes |
| Event | Proceedings of the 1994 Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 4) - Norfolk, VA, USA Duration: Oct 30 1994 → Nov 5 1994 |
Conference
| Conference | Proceedings of the 1994 Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 4) |
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| City | Norfolk, VA, USA |
| Period | 10/30/94 → 11/5/94 |