DOI QR코드

DOI QR Code

Shielding analyses supporting the Lithium loop design and safety assessments in IFMIF-DONES

  • 투고 : 2022.11.08
  • 심사 : 2022.12.19
  • 발행 : 2023.04.25

초록

The assessment of radiation fields in the lithium loop pipes and dump tank during the operation were performed for International Fusion Materials Irradiation Facility - DEMO-Oriented NEutron Source (IFMIF-DONES) in order to obtain the radiation dose-rate maps in the component surroundings. Variance reduction techniques such as weight window mesh (produced with the ADVANTG code) were applied to bring the statistical uncertainty down to a reasonable level. The biological dose was given in the study, and potential shielding optimization is suggested and more thoroughly evaluated. The MCNP Monte Carlo was used to simulate a gamma particle transport for radiation shielding purposes for the current Li Systems' design. In addition, the shielding efficiency was identified for the Impurity Control System components and the dump tank. The analysis reported in this paper takes into account the radiation decay source from and activated corrosion products (ACPs), which is created by d-Li interaction. As a consequence, the radiation (resulting from ACPs and Be-7) shielding calculations have been carried out for safety considerations.

키워드

과제정보

This work has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No 101052200 - EUROfusion). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor the European Commission can be held responsible for them.

참고문헌

  1. A. Ibarra, A. Garcia, R. Roman, M. Perez, W. Krolas, DONES Plant Description Document", EFDA_D_2MP8HQ, 2021. 
  2. C.J. Werner, J.S. Bull, C.J. Solomon, et al., MCNP6.2 Release Notes", LA-UR-18-20808, 2018. 
  3. Ulrich Fischer, Barbara Bienkowska, Krzysztof Drozdowicz, Manuela Frisoni, Fernando Mota, Francisco Ogando, Yuefeng Qiu, Gediminas Stankunas, Grzegorz Tracz, Neutronics of the IFMIF-DONES irradiation facility, Fusion Engineering and Design 146 (2019) 1276-1281. Part A.  https://doi.org/10.1016/j.fusengdes.2019.02.057
  4. U. Fischer, C. Bachmann, J.P. Catalan, T. Eade, D. Flammini, M. Gilbert, J.-Ch. Jaboulay, A. Konobeev, D. Leichtle, L. Lu, F. Malouch, F. Moro, P. Pereslavtsev, Y. Qiu, J. Sanz, P. Sauvan, G. Stankunas, A. Travleev, A. Turner, F. Ogando, I. Palermo, R. Villari, Methodological approach for DEMO neutronics in the European PPPT programme: tools, data and analyses, Fusion Engineering and Design 123 (2017) 26-31.  https://doi.org/10.1016/j.fusengdes.2017.01.053
  5. J. Ahrens, B. Geveci, Ch. Law, ParaView: an end-user tool for large-data visualization, in: D. Charles, Hansen, Johnson Chris R (Eds.), Visualization Handbook, Butterworth-Heinemann, 2005, pp. 717-731. ISBN 9780123875822. 
  6. L. Lu, U. Fischer, P. Pereslavtsev, Improved algorithms and advanced features of the CAD to MC conversion tool McCad, Fusion Eng. Des. 89 (2014) 1885-1888.  https://doi.org/10.1016/j.fusengdes.2014.05.015
  7. S.W. Mosher, S.R. Johnson, A.M. Bevill, A.M. Ibrahim, C.R. Daily, T.M. Evans, J.C. Wagner, J.O. Johnson, R.E. Grove, ADVANTG-An Automated Variance Reduction Parameter Generator, ORNL/TM-2013/416 Rev. 1, Oak Ridge National Laboratory, Oak Ridge, TN, 2015. 
  8. I.E. Stamatelatos, T. Vasilopoulou, P. Georgolopoulou, Neutron streaming along shielding penetrations of high energy medical accelerators using MCNP and ADVANTG codes, Physica Medica 32 (Supplement 3) (2016) 304. 
  9. T.M. Evans, A.S. Stafford, R.N. Slaybaugh, K.T. Clarno, Denovo: a new three-dimensional parallel discrete ordinates code in SCALE, Nucl. Technol. 171 (2) (2010) 171-200.  https://doi.org/10.13182/NT171-171
  10. Y. Qiu, U. Fischer, Global flux calculation for IFMIF-DONES test cell using advanced variance reduction technique, Fusion Science and Technology 74 (4) (2018) 406-411.  https://doi.org/10.1080/15361055.2018.1500847
  11. J.C. Wagner, D.E. Peplow, S.W. Mosher, FW-CADIS method for global and regional variance reduction of Monte Carlo radiation transport calculations, Nucl. Sci. Eng. 176 (1) (Jan. 2014) 37-57.  https://doi.org/10.13182/NSE12-33
  12. D. Tamas, Z. Andras, Updates on the Estimation of Generation and Distribution of Impurities in the Li Loop. Technical Note on Subtask ENS-5.3.21-T25-03, Report IDM Ref. No. EFDA_D_2NSUM6, 2021. 
  13. ICRP Conversion coefficients for use in radiological protection against external radiation. Publication 74, Annals of the ICRP 26/3 (1997). 
  14. Council Directive 2013/59/Euratom of 5 December 2013 Laying Down Basic Safety Standards for Protection against the Dangers Arising from Exposure to Ionising Radiation, and Repealing Directives 89/618/Euratom, 90/641/Euratom, 96/29/Euratom, 97/43/Euratom and 2003/122/EuratomOff L13, EU document, 2014, pp. 1-73 [Online]. Available: https://eur-lex.europa.eu/eli/dir/2013/59/oj.