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验证一种通用高流量同位素反应器特定的元启发式优化框架,用于同位素生产目标设计

C Salyer¹, S Bogetic¹, J Griswold²

¹Department of Nuclear Engineering University of Tennessee, Knoxville, Tickle College of Engineering 863 Neyland Dr, Knoxville, TN 37996, USA.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

|November 27, 2024

概括

使用元启发技术的先进优化方法显著提高了高流量同位素反应堆 (HFIR) 的同位素生产效率. 这种方法增强了目标设计和辐射策略,导致-188 (188W) 等同位素的特定活性增加了30%以上.

科学领域:

核工程核工程是指核工程.
计算科学计算科学
材料科学材料科学材料科学

背景情况:

目前高流同位素反应堆 (HFIR) 的同位素生产 (IP) 依赖于保守的方法,限制了创新,并努力满足日益增长的同位素需求.
对于知识产权活动,先进的优化技术尚未得到充分发展,因此需要更有效的目标设计方法和辐射策略.

研究的目的:

开发和整合MH优化技术,以提高HFIR的同位素生产效率.
为了最大限度地提高常规生产的同位素的特异活性 (SA),使用-188 (188W) 作为测试案例.
为探索众多目标设计和辐射方案创建一个计算高效的框架.

主要方法:

开发了一个优化框架,将Gnowee MH算法与蒙特卡罗N-粒子版本6 (MCNP6) 和树同位素生成 (ORIGEN) 代码结合起来.
利用一种新的简化MCNP6模型来加快模拟,使得在单个完整的HFIR模型运行时能够评估1000多个候选者.
探索的变量包括辐射位置,循环数和 (W) 样本数量,以 SA 为目标函数.

主要成果:

优化框架准确地探索了设计空间,并确定了高性能候选人,与完整的HFIR模型结果进行验证.
模拟表明,较少的 (W) 环产生更高的特异活性 (SA),与实验数据一致.
简化和完整的HFIR模型都预测,随着拟议的修改,SA将增加30%以上.

结论:

为HFIR同位素生产成功开发和验证了一种通用,计算高效的优化框架.
该框架通过探索数千种独特的设计和策略,显著提高知识产权效率.
这种方法有可能应用于HFIR以外的其他同位素生产活动.

关键词:

高流量同位素反应堆的高流量同位素反应堆.同位素生产同位素的生产.超启发式优化优化方法

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