中国散裂中子源靶站重要部件的辐照损伤计算与分析

于全芝; 殷雯; 梁天骄

doi:10.7498/aps.60.052501

摘要

本文采用高能粒子输运程序MCNPX 2.5.0,对中国散裂中子源(CSNS)靶站重要部件所使用的钨、SS316不锈钢与Al-6061等材料,由于中子与质子辐照所引起的损伤能量截面与原子离位截面进行了计算,对钨靶体、靶的不锈钢容器、慢化器与反射体的铝容器等部件的辐照损伤量——原子离位次数(displacement per atom,DPA)进行了计算与分析,并给出了质子束斑形状对靶体及靶容器DPA峰值的影响. 这些计算与分析对正在建设的中国散裂中子源靶站的设计及参数选择具有重要的实际意义.

关键词:

Abstract

The damage energy cross sections and displacement cross sections of W, SS316 and Al-6061, which will be used in the CSNS (China Spalllation Neutron Source) target station, were calculated with the high energy transport code MCNPX 2.5.0. The DPA (Displacement Per Atom) distributions were also calculated and anlyzed for the main components in the CSNS target station, such as the W target, the target vessel, the moderators and reflector vessels. Based on the DPA caused by neutrons and protons, the lifetime of these components were estimated. The influence of the proton beam profile on the peak value of DPA for W target and target vessel were also presented. These calculations and analyses are very important for the under going CSNS project.

Keywords:

作者及机构信息

1.
中国科学院物理研究所散裂中子源靶站谱仪工程中心,北京凝聚态物理国家重点实验室,北京 100190

基金项目: 国家自然科学基金(批准号:11075203, 91026009)资助的课题.

Authors and contacts

1.
Engineering Centre of CSNS Target Station and Instruments, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

参考文献

[1]	Wei J, Fu S N, Tang J Y, Tao J Z, Wang D S, Wang F W, Wang S 2009 Ches. Phys. C 33 1033
[2]	Yin W, Liang T J, Yu Q Z, Jia X J 2010 J. Nucl. Mater. 398 100
[3]	MCNP/MCNPX CCC-730, Monte Carlo N-Particle Transport Code System Including MCNP5 1.40 and MCNPX 2.5.0 and Data libraries, 2006
[4]	Mashnik V 2001 ENDF-102, Data formats and procedures for the evaluated nuclear data file ENDF-6, Bnlncs-44945-01/04-Rev., National Nuclear Data Center, Brookhaven National Laboratory, Upton, New York
[5]	Chadwick M B, Young P G, Shiba S, Little S C, Macfarlane R E, Prael R E, Water L S 1999 Nucl. Sci. Eng. 131 293
[6]	Mashnik S G, Sierk A J, Bersillon O, Gabriel T 1998 Nucl. Instr. Meth. A 414 68
[7]	Ziegler J F, Biersack J P, Littmark U 1985 The stopping and range of ions in solids (New York: Pergamon)
[8]	Lu W, Wechsler M S, Dai Y 2006 J. Nucl. Mater. 356 280
[9]	Initial Design Report of China Spallation Neutron Source for the Target Station and Instruments (Institute of High Energy Physics) 2010.2 (in Chinese)[散裂中子源初步设计报告－靶站谱仪分册(中科院高能物理研究所)2010.2]
[10]	Detlef Filges, Frank Goldenbaum 2009 Handbook of Spallation Research: Theory, Experiments and Applications, Wiley-vch Verlag GmnH & Co. KgaA, Weinheim
[11]	Chen J, Ullmaier H, Flodorf T, Kühnlein W, Duwe R, Carsughi F, Broome T 2001 J. Nucl. Mater. 298 248

施引文献

[1]	Wei J, Fu S N, Tang J Y, Tao J Z, Wang D S, Wang F W, Wang S 2009 Ches. Phys. C 33 1033
[2]	Yin W, Liang T J, Yu Q Z, Jia X J 2010 J. Nucl. Mater. 398 100
[3]	MCNP/MCNPX CCC-730, Monte Carlo N-Particle Transport Code System Including MCNP5 1.40 and MCNPX 2.5.0 and Data libraries, 2006
[4]	Mashnik V 2001 ENDF-102, Data formats and procedures for the evaluated nuclear data file ENDF-6, Bnlncs-44945-01/04-Rev., National Nuclear Data Center, Brookhaven National Laboratory, Upton, New York
[5]	Chadwick M B, Young P G, Shiba S, Little S C, Macfarlane R E, Prael R E, Water L S 1999 Nucl. Sci. Eng. 131 293
[6]	Mashnik S G, Sierk A J, Bersillon O, Gabriel T 1998 Nucl. Instr. Meth. A 414 68
[7]	Ziegler J F, Biersack J P, Littmark U 1985 The stopping and range of ions in solids (New York: Pergamon)
[8]	Lu W, Wechsler M S, Dai Y 2006 J. Nucl. Mater. 356 280
[9]	Initial Design Report of China Spallation Neutron Source for the Target Station and Instruments (Institute of High Energy Physics) 2010.2 (in Chinese)[散裂中子源初步设计报告－靶站谱仪分册(中科院高能物理研究所)2010.2]
[10]	Detlef Filges, Frank Goldenbaum 2009 Handbook of Spallation Research: Theory, Experiments and Applications, Wiley-vch Verlag GmnH & Co. KgaA, Weinheim
[11]	Chen J, Ullmaier H, Flodorf T, Kühnlein W, Duwe R, Carsughi F, Broome T 2001 J. Nucl. Mater. 298 248

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