التفاصيل البيبلوغرافية
| العنوان: |
Shielding analysis for TCP and IVVS bio-shield plugs of ITER. |
| المؤلفون: |
Baidoo, I.K.1,2 (AUTHOR), Wu, Y.1 (AUTHOR), Song, J.1 (AUTHOR) jing.song@fds.org.cn, Yu, S.1 (AUTHOR), Jakhar, S.3 (AUTHOR), Polunovskiy, E.3 (AUTHOR), Loughlin, M.3 (AUTHOR) |
| المصدر: |
Fusion Engineering & Design. Apr2020, Vol. 153, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*TCP/IP, *NEUTRON flux, *BIOLOGICALLY inspired computing, *NEUTRONS |
| مستخلص: |
• The ITER MCNP tokamak complex neutronics model has been modified for new TCP and IVVS bio shield plug using SuperMC. • Total neutron flux tally behind TCP and IVVS bio-shield plug were respectively 2.86 × 105 n/cm2/s and 1.71 × 106 n/cm2/s. • Spatial neutron distributions in port cells showed significant shielding improvement compared with the original designs. • Alternative 70 %–90 % improved designs scheme have been proposed via iterative shielding design optimization. ITER neutronics model (Tokamak Complex) keeps evolving, and each development requires comprehensive transport analysis for verification and validation. The tokamak complex's bio-shield plugs are the main shielding barriers between the tokamak and the port cells. Therefore, shielding analysis and optimization for the bio-shield plugs are part of the key factors for ITER licensing. In this work, performance evaluation of two designed bio-shield plugs: IVVS-port cell #3 and TCP-port cell #4 in level B1 has been conducted. Neutron transport calculation analysis on the new designs (generic designs) showed total neutron flux of 1.71 × 106 n/cm2/s and 2.86 × 105 n/cm2/s respectively in a specified tally cell behind the IVVS and TCP bio-shield plug. Spatial neutron distribution behind the bios-shield plug (port cells) showed significant shielding improvement compared to the original IVVS and TCP bio-shield design. Further iterative optimized shielding scheme has been proposed to reduce the total neutron flux from 1.71 × 106 to 8.8 × 104 n/cm2/s and from 2.86 × 105 to 6.4 × 104 n/cm2/s for the respective tally cell behind IVVS and TCP bio-shield plugs. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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