期刊
ANNALS OF NUCLEAR ENERGY
卷 111, 期 -, 页码 407-440出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.anucene.2017.08.017
关键词
TRIGA research reactor; Fission chamber; MCNP; Multiple in-core detectors; Control rod movement; Neutron flux redistribution
资金
- Ministry of education, science and sport of the Republic of Slovenia [Q2-0012 1000-13-0106]
- Commissariat a l'energie atomique et aux energies alternatives (CEA) [Q2-0012 1000-13-0106]
Within the bilateral project between the CEA Cadarache and the Jozef Stefan Institute (JSI) a wide variety of measurements using multiple fission chambers simultaneously inside the reactor core were performed. The fission rate axial profiles were measured at different positions in the reactor core and at different control rod configurations. A relative comparison of the calculated fission rates using the MCNP code and the measured fission rates was performed. In general the agreement between the measurements and calculations is good, with the deviations within the uncertainties. For better observation and understanding of the neutron flux redistribution due to the control rod movement, the neutron flux and fission rate had been calculated through the entire reactor core for different control rod configurations. The detector position with minimum signal variations due to the regulating and compensating control rod movement during normal operation was determined. The minimum variation is optimal in case we want to reliably determine the reactor power without influence of the regulating and compensating control rod positions. (C) 2017 Elsevier Ltd. All rights reserved.
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