Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2016, Vol. 27 ›› Issue (4): 85 doi: 10.1007/s41365-016-0079-5

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Activation and shutdown dose-rate analyses for the EAST NBI test facility

Yu-Qing Chen, Ji Wang , Bin Wu, Jun Li, Ya-Hong Xie, Guo-Qiang Zhong, Chun-Dong Hu   

  1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
  • Contact: Ji Wang E-mail:wangji@ipp.ac.cn
  • Supported by:

    This work was supported by the International S&T Cooperation Program of China (No. 2014DFG61950), National Magnetic Confinement Fusion Science Program (No. 2013GB101001), and the National Natural Science Foundation of China (No. 11405207).

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Yu-Qing Chen, Ji Wang, Bin Wu, Jun Li, Ya-Hong Xie, Guo-Qiang Zhong, Chun-Dong Hu. Activation and shutdown dose-rate analyses for the EAST NBI test facility.Nuclear Science and Techniques, 2016, 27(4): 85     doi: 10.1007/s41365-016-0079-5
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Abstract:

An analysis of the neutron activation and shutdown dose rates was performed for the EAST high-power deuterium neutral beam injector test facility (EAST NBITF) by using the multiparticle transport code FLUKA 2011.2. Also, the neutron and neutron-induced gamma spectra of the facility’s vacuum vessel were evaluated. The results identified the major radionuclides 99Mo, 65Ni, 58Co, 56Mn, and 51Cr for the vacuum vessel and the primary nuclide 64Cu for both the ion dump and the calorimeter. The simulated results indicated that, when the EAST NBITF operates within the design parameters of deuterium energy 80 keV, current 50 A, and pulse 100 s, the neutron intensity will achieve 1011 n/s with no radiation safety problems after the EAST NBITF shuts down.

Key words: Shutdown dose rate, Neutron activation, Radionuclides