EPJ Web Conf.
Volume 247, 2021PHYSOR2020 – International Conference on Physics of Reactors: Transition to a Scalable Nuclear Future
|Number of page(s)||8|
|Section||Research Reactors and Facilities|
|Published online||22 February 2021|
THE SOURCE JERK INTEGRALMETHOD FOR SUB-CRITICALITY MEASUREMENTS IN ADS
1 SCK·CEN, Belgian Nuclear Research Centre Boeretang 200, 2400 Mol, Belgium
2 LPSC, Université Grenoble-Alpes, CNRS/IN2P3 53 Avenue des Martyrs. 38026 Grenoble Cedex, France
3 Normandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3 LPC Caen, 14000 Caen, France
Published online: 22 February 2021
Three sub-critical (SC) core configurations were investigated in the VENUS-F zero power reactor coupled with the GENEPI-3C accelerator. The SC10 and SC12 were a mock-up of a MYRRHA start-up core and SC11 represented a more complex MYRRHA core loaded with various types of in-pile-sections. The sub-criticality of 11 variants of these VENUS-F cores was changed in several steps from -6$ down to -30$ using the safety and control rods. Their sub-criticalities were determined with the Source Jerk Integral (SJI) method using 11 fission chambers located all over the reactor. For the data analysis, the 8-group delayed neutron parameters from the JEFF-3.1.2 evaluated nuclear data library were used. Reliability and reproducibility of the experimental results were tested by repeating the measurements, swapping the detectors and varying the accelerator beam intensity, thus changing the detector count rates and verifying the validity of the dead time corrections. The obtained results are compared with MCNP calculations.
Key words: zero-power ADS experiments / source jerk method
© The Authors, published by EDP Sciences, 2021
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