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在激光驱动的惯性约束聚变实验中,中子半影成像是重要的诊断方法.基于分辨率的要求,模拟了中子源与半影孔装置间不同距离、半影孔装置不同厚度、半影孔装置不同外径以及不同孔型的系统点扩展函数,通过分析点扩展函数的尖锐性和等晕性优化诊断系统.同时还给出了系统的装配误差要求,并发现系统在线性重建时能达到15 μm分辨率,而非线性重建时能满足5 μm分辨率的诊断要求.
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关键词:
- 中子半影成像 /
- Monte Carlo方法 /
- 系统优化 /
- 分辨率
Penumbral imaging of the neutron production in laser-driven inertial confinement fusion experiment is an important diagnostic technique. In order to meet the resolution requirement, we simulate the point spread function (PSF) under the conditions of different source-aperture distances, different thicknesses, different outer radii, and different shapes of the aperture. Base on the sharpness and the isoplanaticity of PSF, the diagnostic system can be optimized. According to the simulation results, tolerant misalignment of system is analysed: a resolution of 15 μm can be satisfied by the linear reconstruction method, and a resolution of 5 μm can be achieved by using the nonlinear reconstruction method.-
Keywords:
- neutron penumbral imaging /
- Monte Carlo method /
- system optimizing /
- resolution
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[2] [2] Disdier L, Rouyer A, Fedotoff A, Bourgade J L, Marshall F J, Glebov V Y, Stoeckl C 2003 Rev. Sci. Instrum. 74 1832
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[4] [4] Morgan G L, Berggren R R, Bradley P A, Cverna F H, Faulkner J R, Gobby P L, Oertel J A, Swenson F J, Tegtmeier J A, Walton R B, Wilke M D, Wilson D C 2001 Rev. Sci. Instrum. 72 865
[5] [5] Christensen C R, Barnes C W, Morgan G L, Wilke M D, Wilson D C 2003 Rev. Sci. Instrum. 74 2690
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[8] [8] Zhao Z Q, Ding Y K, Liu D J, Tang C H, Wen S H, Pu Y K 2006 High Power Laser and Particle Beams 18 1203 (in Chinese) [赵宗清、丁永坤、刘东剑、唐昶环、温树槐、蒲以康 2006 强激光与粒子束 18 1203]
[9] [9] Chen F X, Zhen J, Yang J L 2006 Acta Phys. Sin. 55 5947 (in Chinese) [陈法新、郑坚、杨建伦 2006 55 5947]
[10] ] Liu D J, Tang C H, Zhao Z Q, Dong J J, An Z 2006 High Power Laser and Particle Beams 18 1199 (in Chinese) [刘东剑、唐昶环、赵宗清、董建军、安竹 2006 强激光与粒子束 18 1199]
[11] ] Jiang M, Hu B Q, Ma Q L, Tang S B, Fang Z Y, Zeng D M 2008 Acta Photon. Sin. 37 310 (in Chinese) [蒋敏、胡炳全、马庆力、唐世彪、方祯云、曾代敏 2008 光子学报 37 310]
[12] ] Disdier L, Lerche R A, Bourgade J L, Glebov V Y 2004 Rev. Sci. Instrum. 75 2134
[13] ] Liu D J, Zou L, Tang C H, Zhao Z Q, Hou Q, An Z 2007 Nucl. Instrum. Meth. Phys. Res. A 578 537
[14] ] Pei L C, Zhang X Z 1980 Monte Carlo Methods and Their Application to Particle Transport Problems (Beijing:Sience Press) pp123,270 [裴鹿成、张孝泽 1980 蒙特卡罗方法及其在粒子输运问题中的应用 (北京:科学出版社) 第123,270页]
[15] ] Chen Y W, Nakao Z 1996 Bull. Faculty Eng. Univ. Ryukyus 52 157
[16] ] Ghilea M C, Sangster T C, Meyerhofer D D, Lerche R A, Disdier L 2008 Rev. Sci. Instrum. 79 023501
[17] ] Zhao Z Q, Ding Y K, Hao Y D, Yuan Y T, Pu Y K 2008 Acta Phys. Sin. 57 5756 (in Chinese) [赵宗清、丁永坤、郝轶聃、袁永腾、蒲以康 2008 57 5756]
[18] ] Zhou M Y 2001 Deconvolution and Signal Recovery (Beijing:National Defense Industry Press) p188 [邹谋炎 2001 反卷积和信号复原 (北京:国防工业出版社) 第188页]
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[1] [1] Ress D, Lerche R A, Ellis R J, Nugent K A 1988 Science 241 956
[2] [2] Disdier L, Rouyer A, Fedotoff A, Bourgade J L, Marshall F J, Glebov V Y, Stoeckl C 2003 Rev. Sci. Instrum. 74 1832
[3] [3] Disdier L, Rouyer A, Lantuéjoul I, Landoas O, Bourgade J L, Sangster T C, Glebov V Y, Lerche R A 2006 Phys. Plasmas 13 56317
[4] [4] Morgan G L, Berggren R R, Bradley P A, Cverna F H, Faulkner J R, Gobby P L, Oertel J A, Swenson F J, Tegtmeier J A, Walton R B, Wilke M D, Wilson D C 2001 Rev. Sci. Instrum. 72 865
[5] [5] Christensen C R, Barnes C W, Morgan G L, Wilke M D, Wilson D C 2003 Rev. Sci. Instrum. 74 2690
[6] [6] Christensen C R, Barnes C W, Morgan G L, Wilke M D, Bradley P A, Gobby P L 2003 Rev. Sci. Instrum. 74 1705
[7] [7] Disdier L, Rouyer A, Wilsonb D C, Fedotoffa A, Stoecklc C, Bourgadea J L, Glebovc V Y, Garonneta J P, Sekac W 2002 Nucl. Instrum. Meth. Phys. Res. A 489 496
[8] [8] Zhao Z Q, Ding Y K, Liu D J, Tang C H, Wen S H, Pu Y K 2006 High Power Laser and Particle Beams 18 1203 (in Chinese) [赵宗清、丁永坤、刘东剑、唐昶环、温树槐、蒲以康 2006 强激光与粒子束 18 1203]
[9] [9] Chen F X, Zhen J, Yang J L 2006 Acta Phys. Sin. 55 5947 (in Chinese) [陈法新、郑坚、杨建伦 2006 55 5947]
[10] ] Liu D J, Tang C H, Zhao Z Q, Dong J J, An Z 2006 High Power Laser and Particle Beams 18 1199 (in Chinese) [刘东剑、唐昶环、赵宗清、董建军、安竹 2006 强激光与粒子束 18 1199]
[11] ] Jiang M, Hu B Q, Ma Q L, Tang S B, Fang Z Y, Zeng D M 2008 Acta Photon. Sin. 37 310 (in Chinese) [蒋敏、胡炳全、马庆力、唐世彪、方祯云、曾代敏 2008 光子学报 37 310]
[12] ] Disdier L, Lerche R A, Bourgade J L, Glebov V Y 2004 Rev. Sci. Instrum. 75 2134
[13] ] Liu D J, Zou L, Tang C H, Zhao Z Q, Hou Q, An Z 2007 Nucl. Instrum. Meth. Phys. Res. A 578 537
[14] ] Pei L C, Zhang X Z 1980 Monte Carlo Methods and Their Application to Particle Transport Problems (Beijing:Sience Press) pp123,270 [裴鹿成、张孝泽 1980 蒙特卡罗方法及其在粒子输运问题中的应用 (北京:科学出版社) 第123,270页]
[15] ] Chen Y W, Nakao Z 1996 Bull. Faculty Eng. Univ. Ryukyus 52 157
[16] ] Ghilea M C, Sangster T C, Meyerhofer D D, Lerche R A, Disdier L 2008 Rev. Sci. Instrum. 79 023501
[17] ] Zhao Z Q, Ding Y K, Hao Y D, Yuan Y T, Pu Y K 2008 Acta Phys. Sin. 57 5756 (in Chinese) [赵宗清、丁永坤、郝轶聃、袁永腾、蒲以康 2008 57 5756]
[18] ] Zhou M Y 2001 Deconvolution and Signal Recovery (Beijing:National Defense Industry Press) p188 [邹谋炎 2001 反卷积和信号复原 (北京:国防工业出版社) 第188页]
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