Development of Subcriticality Monitor for Accelerator-Driven Subcritical System Based on Rossi-alpha Method

Research Project

Project/Area Number	19360426
Research Category	Grant-in-Aid for Scientific Research (B)
Allocation Type	Single-year Grants
Section	一般
Research Field	Nuclear engineering
Research Institution	Nagoya University
Principal Investigator	YAMANE Yoshihiro Nagoya University, 大学院・工学研究科, 教授 (60115649)
Co-Investigator(Kenkyū-buntansha)	YAMAMOTO Akio 名古屋大学, 大学院・工学研究科, 准教授 (50362265) KITAMURA Yasunori 日本原子力研究開発機構, 原子力基礎工学研究部門, 副主任研究員 (60332706)
Project Period (FY)	2007 – 2009
Project Status	Completed (Fiscal Year 2009)
Budget Amount *help	¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000) Fiscal Year 2009: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000) Fiscal Year 2008: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000) Fiscal Year 2007: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Keywords	原子力エネルギー / 放射線 / 加速器駆動炉 / 未臨界監視 / 中性子相関法 / ロッシ・アルファ法
Research Abstract	In order to develop a subcriticality monitor, which is necessary for safety operation of Accelerator-Driven Subcritical System (ADS), a real-time, continuous measuring system for alpha-value was developed based on Rossi-alpha method. Moreover, a new Rossi-alpha formula was derived based on detector-importance function theory. According to this new formula, a device for data-processing procedure accumulating correlation neutrons effectively is necessary to apply the measuring system proposed to ADS's that operate with low neutron multiplication and high reactor power.