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.
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2016 24th International Conference on Nuclear Engineering
June 26–30, 2016
Charlotte, North Carolina, USA
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-5001-5
PROCEEDINGS PAPER
Electronics for Instrumentation and Controls in Accelerator Driven Sub-Critical System Available to Purchase
Wenjuan Cui,
Wenjuan Cui
Chinese Academy of Sciences, Lanzhou, China
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Zhiyong He,
Zhiyong He
Chinese Academy of Sciences, Lanzhou, China
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Qiang Zhao,
Qiang Zhao
Chinese Academy of Sciences, Lanzhou, China
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Yichuan He,
Yichuan He
Chinese Academy of Sciences, Lanzhou, China
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Yuxi Luo
Yuxi Luo
Chinese Academy of Sciences, Lanzhou, China
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Wenjuan Cui
Chinese Academy of Sciences, Lanzhou, China
Zhiyong He
Chinese Academy of Sciences, Lanzhou, China
Qiang Zhao
Chinese Academy of Sciences, Lanzhou, China
Yichuan He
Chinese Academy of Sciences, Lanzhou, China
Yuxi Luo
Chinese Academy of Sciences, Lanzhou, China
Paper No:
ICONE24-60082, V001T04A004; 5 pages
Published Online:
October 25, 2016
Citation
Cui, W, He, Z, Zhao, Q, He, Y, & Luo, Y. "Electronics for Instrumentation and Controls in Accelerator Driven Sub-Critical System." Proceedings of the 2016 24th International Conference on Nuclear Engineering. Charlotte, North Carolina, USA. June 26–30, 2016. V001T04A004. ASME. https://doi.org/10.1115/ICONE24-60082
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