High Order Harmonic Wave Filtering Method Used In Prompt Neutron Attenuation Constant Calculation Of ADS Sub-Critical Reactor

XIE Jinsen; YU Tao; ZUO Guoping; HE Lihua; LI Xiaohua

Volume 34 Issue S1

Mar. 2025

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Article Navigation > Nuclear Power Engineering > 2013 > 34(S1): 14-17

XIE Jinsen, YU Tao, ZUO Guoping, HE Lihua, LI Xiaohua. High Order Harmonic Wave Filtering Method Used In Prompt Neutron Attenuation Constant Calculation Of ADS Sub-Critical Reactor[J]. Nuclear Power Engineering, 2013, 34(S1): 14-17.

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High Order Harmonic Wave Filtering Method Used In Prompt Neutron Attenuation Constant Calculation Of ADS Sub-Critical Reactor

1. School of Nuclear Science and Technology, University of South China, Hunan Hengyang, 421001, China;
2. Department of Reactor Engineering, China Institute of Atomic Energy, Beijing, 102413, China

Received Date: 2013-03-12
Rev Recd Date: 2013-04-30

Available Online: 2025-03-08

Abstract

Abstract

MUSE（Multiplication with an external source） series experiments carried out by the EU show that the Pulsed Neutron Source（PNS） method is appropriate for keffmeasurement in deep sub-critical conditions.In PNS method,the accuracy of prompt neutron attenuation constant α plays a key role for accurately keff measurement.In this paper,the analysis of α constant measurement on fast-thermal coupled subcritical facility Venus-1# is performed.By using high order harmonic wave filtering technique,the time interval for α fitting is obtained and the fitted α values are spatially independent with locations of detectors.Furthermore,the comparison of prompt multiplication factors kpderived from fitted α and calculated by MCNP（Monte Carlo N Particles） is made,which shows a good conformation.Results in this research indicate that,the high order harmonic wave filtering method can effectively avoid the problem that the measured α values depend on the locations of detectors,and the α values obtained from which can be used for keff off-line monitoring in ADS sub-critical reactors.
- ADS sub-critical reactor,
- Prompt neutron attenuation constant,
- High order harmonic wave

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