Authors & Affiliations
Kovalev A.O., Rodionov R.N., Portnov D.V., Kashchuk Yu.A.
Project Center ITER, Moscow Russia
Rodionov R.N. – Researcher.
Portnov D.V. – Sector Leader.
Kashchuk Yu.A. – Department Head, Cand. Sci. (Phys.-Math.).
The work is devoted to the analysis of uranium radiation heating results under the action of neutron radiation. The revealed results discrepancies in the radiation heating modeling of the uranium 235 and 238 using FENDL 3.1d and ENDF nuclear data libraries motivate the study. At the same time, all initial data in the computational model, namely, the neutrons energy spectrum, mass of fissile material, geometry and surrounding structures composition were identical. In the course of the work, the results of energy release calculations in uranium cells were compared using various libraries. Analytical evaluation of the radiation heating results in test cells is given. The obtained data indicate erroneous values of neutron kerma factors in FENDL 3.1d nuclear data library. Fusion Evaluated Nuclear Data Library was created by the working group of the Nuclear Data Section of the IAEA in the mid-1990s. FENDL is focused on application in the design of fusion plants as well as plants for materials testing such as IFMIF. The expanded application required the addition of some materials to the library, the expansion of the energy range to higher energies and the addition of data for reactions caused by charged particles. Version 3.1d was released in January 2018 and is widely used in nuclear analysis of structural materials for the experimental fusion reactor ITER and the demonstration fusion reactor DEMO. The results of this work have been submitted to the ITER International Organization contact group for presentation to the developers of the FENDL library.
fission reaction, radiation heating of uranium isotopes, analytical assessment of radiation heating, verification of nuclear data libraries
1. On the road to ITER: Milestones. Available at: https://www.iter.org/proj/itermilestones#166 (accessed 14.09.2020).
2. Kaschuck Yu.A., Batyunin A.V., Egorov O.G., Krasil'nikov A.V., Tsutskih A.Yu., Frunze V.V. Divertor Neutron Flux Monitor: Conceptual Design and Calibration. AIP Conf. Proc., 2008, vol. 988, pp. 303.
3. Abdou M.A., Maynard C.W., Wright R.Q.MACK: A Computer Program to Calculate Neutron Energy Release Parameters (Fluence-to-Kerma Factors) and Multigroup Reaction Cross Sections from Nuclear Data in ENDF Format. Oak Ridge National Laboratory report ORNL-TM-3994, 1973.
4. Trkov A., Forrest R., Mengoni A. Summary Report from First Research Coordination Meeting on Nuclear Data Libraries for Advance Systems – Fusion Devices (FENDL-3). Vienna, Austria, International Atomic Energy Agency, 2008.
5. Goorley, John T., James, Michael R., Booth, Thomas E., Brown, Forrest B., Bull, Jeffrey S., Cox, Lawrence J., Durkee, Jr., Joe W., Elson, Jay S., Fensin, Michael Lorne, Forster, III, Robert A., Hendricks, John S., Hughes, III, H. Grady, Johns, Russell C., Kiedrowski, Brian C., Martz, Roger L., Mashnik, Stepan G., McKinney, Gregg W., Pelowitz, Denise B., Prael, Richard E., Sweezy, Jeremy Ed, Waters, Laurie S., Wilcox, Trevor, and Zukaitis, Anthony J. Initial MCNP6 Release Overview — MCNP6 version 1.0. United States: N. p., 2013. Web. doi:10.2172/1086758.
6. Kryuchkov E.F., Yurova L.N. Teoriya perenosa neytronov [Neutron transport theory]. Moscow, MEPhI Publ., 2007. 272 p.
7. Klimov A.N. Yadernaya fizika i yadernyye reaktory [Nuclear Physics and Nuclear Reactors]. Moscow, Energoatomizdat Publ., 1985. 352 p.