ELECTRONICS FOR INSTRUMENTATION AND CONTROLS IN ACCELERATOR DRIVEN SUB-CRITICAL SYSTEM

	ELECTRONICS FOR INSTRUMENTATION AND CONTROLS IN ACCELERATOR DRIVEN SUB-CRITICAL SYSTEM
	Cui, Wenjuan; He, Zhiyong; Zhao, Qiang; He, Yichuan; Luo, Yuxi; ASME
	2016
关键词	accelerator driven sub-critical system instrumentation and control systems redundancy architecture
英文摘要	In this paper, we study the electronics in the instrumentation and control (I&C) systems for an accelerator driven sub-critical (ADS) system, where a target located at the centre of a sub-critical reactor core is bombarded by the protons from an accelerator. In comparison with a commercial reactor used in nuclear industry, more control electronics are required to exactly couple the high-energy beam from the accelerator to the spallation target in the reactor core. There is a strong drive to utilize standard commercial-off-the-shelf devices to minimize cost and development time. In order to improve the reliability of I&C systems, redundancy architecture has been considered by adding more electronic devices. In comparison with I&C system without redundancy, the dual redundancy architecture improves the reliability of the system by 20000 times. Then, we study the potential application of electronics devices, such as the preamplifiers for detectors, in the reactor building by shielding them with shielding materials. Since the most effective neutrons in creating radiation damages are those fast neutrons with the energy of more than 0.1 MeV, we have proposed a sandwich shielding method to reduce the neutron-induced radiation effects, in which the first and third layers are made of polyethylene and the second layer is made of heavy metal, e.g. tungsten. Simulation results with GEANT4 code have indicated that the shielding with a 30 cm-thick sandwich can increase the expected lifetime of electronics by 1258 times, and can reduce the soft errors caused by single event upsets by 5400 times.
会议录	PROCEEDINGS OF THE 24TH INTERNATIONAL CONFERENCE ON NUCLEAR ENGINEERING, 2016, VOL 1
会议录出版者	AMER SOC MECHANICAL ENGINEERS
会议录出版地	THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
语种	英语
WOS研究方向	Engineering ; Nuclear Science & Technology
WOS记录号	WOS:000387190200084
内容类型	会议论文
源URL	[http://119.78.100.186/handle/113462/58282]
专题	中国科学院近代物理研究所
通讯作者	He, Zhiyong
作者单位	Chinese Acad Sci, Inst Modern Phys, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Cui, Wenjuan,He, Zhiyong,Zhao, Qiang,et al. ELECTRONICS FOR INSTRUMENTATION AND CONTROLS IN ACCELERATOR DRIVEN SUB-CRITICAL SYSTEM[C]. 见:.