Non-Uniform Shielding of Fusion Reactors
Experimental and Calculational Studies of Nonuniform Shieldings of Fusion Reactors and Development on this Basis of a Set of Benchmark Type Experiments for Codes Verification.
Tech Area / Field
8 Project completed
Senior Project Manager
Lapidus O V
MIFI, Russia, Moscow
- Kurchatov Research Center, Russia, Moscow\nNIIEFA Efremov, Russia, St Petersburg\nVNIITF, Russia, Chelyabinsk reg., Snezhinsk\nFEI (IPPE), Russia, Kaluga reg., Obninsk\nFederal State Unitary Enterprise Research and Development Institute of Power Engineering named after N.A.Dollezhal, Russia, Moscow
- Technische Universität Dresden, Germany, Dresden\nENEA, Italy, Frascati\nForschungszentrum Karlsruhe Technik und Umwelt, Germany, Karlsruhe
Project summaryThe purpose of the project is carrying out calculational and experimental investigations of non-uniform models of fusion reactor shields and, on the basis of them, laying the foundation for necessary apparatuses and methods and a complex of benchmark experiments as well as verification of different home and foreign calculational programs with evaluated nuclear data, that have been obtained by now. With this aim in view a complex of calculational and experimental investigations of nine models of iron shields with empty channels and non-uniformities in the walls of the empty channels that are irradiated by 14 MeV neutrons is supposed to be carried out. An investigation of shields with more than 104 times relaxation of source neutrons in a uniform shield material as well as comparing experimental results obtained with different thicknesses of slit shields, the ratio of slit wideness to shield thickness being constant, is also supposed to be carried out. The experiments will enable us to develop a methodology for research of empty channel shields based on non-dimensional criteria that will make it possible to decrease the cost of experimental investigations considerably, because small thickness shields and low intensity neutron generators will be used. Neutron and gamma field functionals as well as their spectra with errors satisfying modem requirements to benchmark experiments necessary for verification of calculational programs oriented to calculation of three-dimensional compositions of non-uniform shields will be measured.
In the process of experimental investigations development of new methods and apparatuses as well as of a new program for variant calculation of three-dimensional compositions of non-uniform shields, modification of methods of defining heating rates with the help of thermoluminescent detectors and a neutron-gamma spectrometric complex with a high spatial resolution are likely to be suggested. Calculational investigations of influence of different configuration materials of non-uniformities in channel walls, that are other than the original material of the walls on radiation dose characteristics behind the shield, will be carried out.
The importance of the project for specialists, who initially worked in the field of nuclear armament, is the possibility of solving nonmilitary problems and joining the International project, such as ITER. Participation of civilian specialists in the project carried out by scientists from military laboratories means application of new nontraditional experimental methods and apparatuses, calculational programs and data, that will improve scientific research considerably.