GLOBAL EVALUATION OF PROMPT DOSE RATES IN ITER USING HYBRID MONTE CARLO/DETERMINISTIC TECHNIQUES

被引：5
|
作者：
Ibrahim, A. M. [1 ]
Sawan, M. E. [1 ]
Mosher, S. W. [2 ]
Evans, T. M. [2 ]
Peplow, D. E. [2 ]
Wilson, P. P. [1 ]
Wagner, J. C. [2 ]
机构：
[1] Univ Wisconsin, Madison, WI 53706 USA
[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
来源：
FUSION SCIENCE AND TECHNOLOGY | 2011年 / 60卷 / 02期
关键词：
D O I：
10.13182/FST11-A12462
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The hybrid Monte Carlo (MC)/deterministic techniques - Consistent Adjoint Driven Importance Sampling (CADIS) and Forward Weighted CADIS (FW-CADIS) - enable the full 3-D modeling of very large and complicated geometries. The ability of performing global MC calculations for nuclear parameters throughout the entire ITER reactor was demonstrated. The 2 m biological shield (bioshield) reduces the total prompt operational dose by six orders of magnitude. The divertor cryo-pump port results in a peaking factor of 120 in the prompt operational dose rate behind the bioshield of ITER. The equatorial port, plugged by 2 m of shielding, increases the prompt dose rate behind the bioshield by a factor of 47. The peak values of the prompt dose rates at the back surface of the bioshield were 240 mu Sv/hr and 94 mu Sv/hr corresponding to the regions behind the divertor cryo-pump port and the equatorial port, respectively.
引用
收藏
页码：676 / 680
页数：5
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