Localisation of a neutron source using measurements and calculation of the neutron flux and its gradient

Autor:	P. Lindén, J.K.-H. Karlsson, Berit Dahl, Imre Pázsit, Gabor Por
Rok vydání:	1999
Předmět:	Physics Nuclear and High Energy Physics business.industry Detector Measure (physics) Flux Scintillator Computational physics Optics Experimental system Neutron flux Position (vector) Neutron source business Instrumentation
Zdroj:	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 438:345-355
ISSN:	0168-9002
DOI:	10.1016/s0168-9002(99)00830-x
Popis:	We have performed laboratory measurements of the neutron flux and its gradient in a static model experiment, similar to a model problem proposed in Pazsit (Ann. Nucl. Energy 24 (1997) 1257). The experimental system consists of a radioactive neutron source located in a water tank. The measurements are performed using a recently developed very small optical fibre detector. The measured values of the flux and its gradient are then used to test the possibility of localising the source. The results show that it is possible to measure the flux on the circumference of a circle and from this calculate the flux gradient vector. Then, by comparison of the measured quantities with corresponding MCNP calculations, both the direction and the distance to the source are found and thus the position of the source can be determined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cf65c3bb93f5925803d6d5c1390d53b2 https://doi.org/10.1016/s0168-9002(99)00830-x Zobrazit plný text záznamu Full Text from ScienceDirect