| Autor: |
Daniel L. Stephens, James M. Alzheimer, David V. Jordan, Paul L. Reeder, Glen A. Warren, Bruce D. Geelhood, William A. Sliger, Kathleen R. McCormick, Lindsay C. Todd, Shannon L. Crowell |
| Rok vydání: |
2008 |
| Předmět: |
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| DOI: |
10.2172/925718 |
| Popis: |
The advanced Large-Area Plastic Scintillator (ALPS) Project at Pacific Northwest National Laboratory investigated possible technological avenues for substantially advancing the state-of-the-art in gamma-ray detection via large-area plastic scintillators. The three predominant themes of these investigations comprised the following: * Maximizing light collection efficiency from a single large-area sheet of plastic scintillator, and optimizing hardware event trigger definition to retain detection efficiency while exploiting the power of coincidence to suppress single-PMT "dark current" background; * Utilizing anti-Compton vetoing and supplementary spectral information from a co-located secondary, or "Back" detector, to both (1) minimize Compton background in the low-energy portion of the "Front" scintillator's pulse-height spectrum, and (2) sharpen the statistical accuracy of the front detector's low-energy response prediction as impelmented in suitable energy-windowing algorithms; and * Investigating alternative materials to enhance the intrinsic gamma-ray detection efficiency of plastic-based sensors. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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