Measurement of reactivity in a source driven deep sub-critical system using neutron noise methods

被引：5
|
作者：
Kumar, Rajeev [1 ]
Degweker, S. B. [2 ]
Roy, Tushar [3 ]
Singh, K. P. [2 ]
Samanta, Sudipta [1 ]
Bajpai, Shefali [3 ]
Ray, Nirmal [3 ]
Ali, M. Yakub [4 ]
Patel, Tarun [3 ]
Shukla, Mayank [3 ]
Sinha, Amar [3 ]
机构：
[1] Bhabha Atom Res Ctr, Reactor Phys Design Div, Bombay 400085, Maharashtra, India
[2] Bhabha Atom Res Ctr, Math Phys & Reactor Theory Sect, Bombay 400085, Maharashtra, India
[3] Bhabha Atom Res Ctr, Neutron Phys & Xray Div, Bombay 400085, Maharashtra, India
[4] Bhabha Atom Res Ctr, Radio Chem Div, Bombay 400085, Maharashtra, India
来源：
ANNALS OF NUCLEAR ENERGY | 2017年 / 103卷
关键词：
Neutron noise; Sub critical; ADS; Reactivity; Modal effect; FEYNMAN-ALPHA METHOD; ORDER MODE ANALYSES; ANALOG MONTE-CARLO; ACCELERATOR; TRANSPORT; FACILITY; ADS;
D O I：
10.1016/j.anucene.2017.01.017
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Measurement of reactivity in deep sub critical system using neutron noise method is challenging due to the modal effect. This paper addresses the issue of modal effect in such system in a new and better way. The measurements were carried out in the ADS experimental facility BRAHMMA commissioned recently at Bhabha Atomic Research Centre (BARC), India. The BRAHMMA assembly is a deep sub critical system having multiplication factor (K-eff) similar to 0.9. The data analysis was carried out using two commonly used neutron noise techniques namely the Feynman alpha and the auto correlation function methods. The modal effect was eliminated by placing the neutron detectors at strategically chosen locations in the core. The detector locations were decided on the basis of the detailed modal analysis of the core. The modal analysis and calculations of the kinetic parameters of the core were carried out using a diffusion theory code. The measured reactivity was found to be in good agreement with the theoretical estimate. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：315 / 325
页数：11
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