JLab Hall-A库仑求和规则实验高精度谱仪光学性能优化方法

doi:10.3969/j.issn.0253-2778.2015.12.009

中国科学技术大学学报 ›› 2015, Vol. 45 ›› Issue (12): 1019-1023.DOI: 10.3969/j.issn.0253-2778.2015.12.009

JLab Hall-A库仑求和规则实验高精度谱仪光学性能优化方法

闫新虎，叶云秀，吕海江，蒋峰建，朱鹏佳，石瑛

1.黄山学院物理系,安徽黄山 245041;2.中国科学技术大学近代物理系,安徽合肥 230026

收稿日期:2014-10-07 修回日期:2015-02-20 接受日期:2015-02-20 出版日期:2023-03-27 发布日期:2015-02-20

HRS optics optimization method for Coulomb sum rule (CSR) experiment in JLab Hall-A

YAN Xinhu, YE Yunxiu, LYU Haijiang, JIANG Fengjian, ZHU Pengjia, SHI Ying

1.Department of Physics, Huangshan University, Huangshan 245041, China; 2.Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China

Received:2014-10-07 Revised:2015-02-20 Accepted:2015-02-20 Online:2023-03-27 Published:2015-02-20
Contact: YAN Xinhu
About author:YAN Xinhu (corresponding author), male, born in 1977, PhD/lecturer. Research field: high energy physics.
Supported by:
Supported by the National Natural Science Foundation of China (11135002, 11275083), Natural Science Foundation of Anhui Education Commitee (KJHS2015B05), Project of College Leader Talent of Anhui Education Commitee (2016).

摘要/Abstract

摘要： 在库仑求和实验中，为了研究接收度和截面计算，需要在高精度谱仪的靶平面上获得一些靶变量.这些靶变量可以通过谱仪的光学性能从聚集平面上的变量反推重建出来.原则上，谱仪的光学性能就是高精度谱仪内部磁场的数学表达，可以用光学矩阵来表示.研究了谱仪光学性能优化方法，就是对变量χ²(TgVar_data-TgVa_theory)进行最小化计算.通过这个计算过程，可以为库仑求和实验获得更好的光学矩阵数据.从最后的优化结果来看，实际数据和理论值符合得很好.

关键词: 库仑求和规则, 光学, 接收度, 靶坐标系

Abstract: In order to study the acceptance and calculate cross sections for CSR experiment, one needs to obtain target variables on the target plane of the spectrometer. Target variables can be reconstructed from focal plane variables with optics. In principle, the optics is the mathematical expression of the magnetic field of HRS. The optics optimization method which minimizes χ² of TgVar_data-TgVa_theoryto determine the better optics matrix elements for CSR experiment was studied. The optimization results show a good agreement between the data and theoretical values.

Key words: Coulomb sum rule, optics, acceptance, target coordinate

中图分类号:

O572

闫新虎, 叶云秀, 吕海江, 蒋峰建, 朱鹏佳, 石瑛. JLab Hall-A库仑求和规则实验高精度谱仪光学性能优化方法[J]. 中国科学技术大学学报, 2015, 45(12): 1019-1023.

YAN Xinhu, YE Yunxiu, LYU Haijiang, JIANG Fengjian, ZHU Pengjia, SHI Ying. HRS optics optimization method for Coulomb sum rule (CSR) experiment in JLab Hall-A[J]. Journal of University of Science and Technology of China, 2015, 45(12): 1019-1023.

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JLab Hall-A库仑求和规则实验高精度谱仪光学性能优化方法

HRS optics optimization method for Coulomb sum rule (CSR) experiment in JLab Hall-A

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