氘氚聚变反应历史测量系统优化设计及亚纳秒信号恢复方法研究
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- 氘氚聚变反应历史测量系统优化设计及亚纳秒信号恢复方法研究
- 发表刊物：
- 原子能科学技术
- 摘要：
- 摘要：针对传统光路追迹设计方法的不足，建立了遗传算法调用Geant4程序优化设计方法并应用于气
体切伦科夫系统的优化设计，取得了较传统光路追迹设计方法优良的系统时间响应和探测效率，对于
GCD(gas Cherenkov detector)系统，优化设计后探测效率增加20 且时间响应压缩7．2 ，对于GRH
(gamma reaction history)系统，优化结果效率较传统光路追迹方法相对提高91．2 。针对聚变测量过
程，通过比较研究，确立了MRNSD(modified residual norm steepest descent)方法为聚变反应历史测量
过程信号恢复方法，该方法可实现在响应函数半高宽1o倍于待恢复信号半高宽，且存在相对信号峰值
1O 高斯白噪声情况下的亚纳秒信号恢复，适合于氘氚聚变反应历史测量。
关键词：氘氚反应历史测量；气体切伦科夫系统；遗传算法；Geant4模拟；亚纳秒信号恢复
Abstract：An optimization method combining Geant4 code with genetic algorithm was
established and applied to designs of two types of gas Cherenkov detectors (GCDs)
because of deficiencies of the traditional optical ray—tracing method．Improved efficien—
cies and time responses were obtained compared with results of traditional optical ray—
tracing method．The efficiency of GCD system through optimization is enhanced by 2O
while time response is eliminated by 7．2 ． The efficiency of GRH (gamma reaction
history)system through optimization is enhanced by 9 1．2％．Aiming at fusion diagnos—
tic process，the M RNSD (modified residual norm steepest descent)method was ascer—
rained as signal recovery method for fusion reaction history diagnosis through compari一
son study． The M RNSD method can recover sub—nanosecond signal distorted by
response function of which the FW HM (full—width at half maximum)is 10 times of the
signa1 to be recovered and with 10 Gaussian white noise added，which i8 suitable for
fusion reaction history diagnosis．
Key words： fusion reaction history diagnosis；gas Cherenkov detector system ；genetic
algorithm ；Geant4 simulation；sub—nanosecond signal recover
doi：10．7538／yzk．2017．51．O4．0713
(1．中国核动力研究设计院核反应堆系统设计技术重点实验室，四川成都610041；
2．西安交通大学核科学与技术学院，陕西西安 710049)
- 合写作者：
- 刘斌1,2; 胡华四2; 吕焕文1; 肖锋1
- 卷号：
- 51 (4)
- 页面范围：
- 713-720
- 是否译文：
- 否
- 发表时间：
- 2017-04-01