27th International Conference Nuclear Energy for New Europe, Piran, Slovenya, 10 - 13 Eylül 2018, ss.1
This study aims to investigate the integral and differential control rod worth for ITU TRIGA MARK II research
reactor. A 3D-model is developed for neutronics analysis of TRIGA MARK II research reactor of Istanbul
Technical University, Turkey. Then, Monte Carlo code MCNP5 is used to estimate an accurate response of
ITU TRIGA MARK II reactor. The control rod reactivity worth curves obtained numerically by using Monte
Carlo model are compared with the experimental data. Whereas, all numerical and experimental analyses
are conducted for the Beginning of Life (BOL) conditions. Moreover, the influence of cross-section data
is investigated by using three different libraries based on Evaluated Nuclear Data Files (ENDF6.0 and
ENDF6.6a) and RMCCS. The differences between experimental and numerical results for reactivity worth
trends are observed and discussed. By understanding the influence of cross section data, the numerical
model is optimized to reduce uncertainties which is the main output of this study.