Experimental demonstration of polarization control in Thomson scattering X-ray sources

被引：1

作者：

Zhang, Hongze ^{[1
]}

Du, Yingchao ^{[1
]}

Chi, Zhijun ^{[2
]}

Yan, Lixin ^{[1
]}

Huang, Wenhui ^{[1
]}

Tang, Chuanxiang ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China

[2] Beijing Normal Univ, Coll Nucl Sci & Technol, Beijing 100875, Peoples R China

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2024年 / 1064卷

关键词：

Compton scattering; Polarization measurement; Monte Carlo;

D O I：

10.1016/j.nima.2024.169376

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Thomson scattering sources are known for generating quasi-monochromatic, high-brightness, and polarization-tunable X-rays, which are widely applied in fields such as fluorescence imaging, magnetic circular dichroism, and nuclear physics. In this paper, we present an experimental demonstration of polarization control at the Tsinghua Thomson scattering X-ray source (TTX) by adjusting the laser polarization. A specially designed Compton polarimeter is employed to effectively analyze the Degree of Linear Polarization (DoLP) of the Xrays produced at the TTX. Our results indicate that the DoLP of X-rays within a collecting angle of 1/(3 gamma), where gamma is the Lorentz factor of the relativistic electron, closely matches the DoLP of the laser. Furthermore, we demonstrate that the X-ray polarization can be continuously modulated from linear polarization to circular polarization by adjusting the laser polarization, which can significantly enhance the functionality and applicability of Thomson Scattering sources for scientific research.

引用

页数：6

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