In the frame of the MUSE-4 experimental program the time-dependent detector responses to a short neutron pulse provided by the GENEPI accelerator were analysed in the past by means of the original spatial-time kinetics KIN3D module implemented in the ERANOS deterministic code system. This KIN3D module version employed the usual assumption (common for many diffusion transient codes developed in the past) that the influence of timedependent effects on the odd-parity flux (that is the neutron current for the lowest angular approximation) is negligible, i.e. Fick's law remains valid even under transient conditions (that disallows using diffusion codes for modelling very fast - compared to neutron lifetime - phenomena, such as neutron waves). Recently the ERANOS KIN3D module was extended at FZK. In particular, the KIN3D transport options and a new time-discretization scheme were validated with respect to modelling fast source-induced transients. This scheme is free of the aforementioned restrictive assumption that may affect results of transient simulations for very fast events and represents an improvement in terms of accuracy, reliability and robustness. In this paper results of transient analyses of the MUSE-4 Pulsed Neutron Source experiments performed by means of the new ERANOS KIN3D options are shown and discussed.
|Publication status||Published - 2007|
|Event||8th International Topical Meeting on Nuclear Applications and Utilization of Accelerators, ACCAPP'07 - , United States|
Duration: 1 Jan 2007 → …
|Conference||8th International Topical Meeting on Nuclear Applications and Utilization of Accelerators, ACCAPP'07|
|Period||1/1/07 → …|
All Science Journal Classification (ASJC) codes
- Nuclear Energy and Engineering
Gabrielli, F., Rineiski, A., Maschek, W., Carta, M., D'Angelo, A., & Rabiti, C. (2007). MUSE-4 analyses by means of spatial kinetics capabilities in the ERANOS code. Paper presented at 8th International Topical Meeting on Nuclear Applications and Utilization of Accelerators, ACCAPP'07, United States.