Research on Control Precision of the Neutron Bandwidth Chopper

Abstract:

Operation of neutron bandwidth limiting chopper requires high controlling precision. Phase difference between the chopper rotor and the synchronous pulse signal should be maintained to be fixed. Rotating frequency of the rotor needs to be very stable. To achieve the above technical requirements, control scheme, dynamic balance, and other means are made. Thus influences to control accuracy are effectively reduced, which are from rotor asymmetry and neutron absorbing materials. In the case described in this paper, phase tracking error was controlled under ±0.10752°with 90% confidence for the designed chopper.

• Periodical: Applied Mechanics and Materials (Volumes 220-223)
• Pages: 1077-1083
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.220-223.1077
• Online since: November 2012
• Authors: Li Ru Zhao, Xiao Zhang Zhang, Kai Zhang, Tong Zhang
• Keywords: Dynamic Balance, Neutron Chopped Device, Precision Control

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