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Measurements and Modeling of gamma Absorbed Doses Due to Releases from a Linear Proton Accelerator: Experimental Design and Preliminary Results

机译:由线性质子加速器释放的伽马吸收剂量的测量和建模:实验设计和初步结果

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External radiation levels due to positron annihilation radiation from exp 11 C, exp 13 N, and exp 15 O released by the 800 MeV linear proton accelerator at the Los Alamos Meson Physics Facility (LAMPF) have been monitored at a fence-line location both by thermoluminescent dosimeters (TLDs) and high pressure ionization chambers (HPICs). The accelerator is located in irregular terrain consisting of mesas and canyons. Fifteen-minute, accumulated external radiation levels were recorded with the HPICs. Instruments on a nerby meteorological tower concurrently measured wind speed and direction at three levels, temperature at two levels, solar radiation, and rainfall. Real-time radionuclide release rates and stack velocities were measured at the release point with in-stack monitors. This paper presents analyses of short-term radiation levels using HPICs and long-term levels using TLDs. Work being done to develop a computer model to predict external radiation levels based on meteorological data is also discussed. (ERA citation 08:013043)

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