Neutronics Design of Accelerator-Driven System for Power Flattening and Beam Current Reduction
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概要
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In the present neutronics design of the Accelerator-Driven System (ADS) cooled by lead-bismuth eutectic (LBE), we investigated several methods to reduce the power peak and beam current, and estimated the temperature reductions of the cladding tube and beam window from the conventional design. The methods are adjustment of inert matrix ratio in fuel in each burn-up cycle, multiregion design in terms of pin radius or inert matrix content, and modification of the level of the beam window position and the height of the central fuel assemblies. As a result, we optimized the ADS combined with the adjustment of the inert matrix ratio in each burn-up cycle, multiregion design in terms of inert matrix content and deepened window level. The maximum temperatures of the optimized ADS at the surface of the cladding tube and the beam window were reduced by 91 and 38°C, respectively. The maximum beam current was improved from 20.3 to 15.6 mA.
- 2008-08-01
著者
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Nishihara Kenji
Japan Atomic Energy Agency
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Tsujimoto Kazufumi
Japan Atomic Energy Agency
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OIGAWA Hiroyuki
Japan Atomic Energy Agency
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IWASAKI Tomohiko
Department of Quantum Science and Energy Engineering, Tohoku University
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Iwasaki Tomohiko
Tohoku University Graduate School Of Engineering Department Of Quantum Science And Energy Engineerin
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IWANAGA Kohei
Japan Atomic Energy Agency
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KURATA Yuji
Japan Atomic Energy Agency
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Nishihara K
Japan Atomic Energy Agency
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Oigawa H
Japan Atomic Energy Agency
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Kurata Y
Japan Atomic Energy Agency
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Iwasaki Tomohiko
Tohoku University
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Iwasaki Tomohiko
Department Of Cardiology Heart Institute Of Japan Tokyo Women's Medical College
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