Measurements of Magnetic Properties of Kilogram-Level Test Masses for Gravitational-Wave Detection Using a Torsion Pendulum

被引：21

作者：

Yin, Hang ^{[1
]}

Tan, Ding-Yin ^{[1
]}

Hu, Ming ^{[2
]}

Wang, Shun ^{[1
]}

Bai, Yan-Zheng ^{[1
]}

Wu, Shu-Chao ^{[1
]}

Zhou, Ze-Bing ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Phys, Hubei Key Lab Gravitat & Quantum Phys, MOE Key Lab Fundamental Phys Quant Measurement, Wuhan 430074, Peoples R China

[2] Chinese Acad Sci, Inst Geodesy & Geophys, Wuhan 430074, Peoples R China

来源：

PHYSICAL REVIEW APPLIED | 2021年 / 15卷 / 01期

基金：

中国国家自然科学基金;

关键词：

NOISE;

D O I：

10.1103/PhysRevApplied.15.014008

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In spaceborne gravitational-wave detectors, the stringent requirements on the magnetic cleanliness of the test masses (TMs) make the development of ground-based characterization techniques of their magnetic properties important. An electrostatically controlled torsion pendulum has been built to measure the magnetic properties of TianQin-like solid TMs. The remanent magnetization m(r) and the magnetic susceptibility chi of TMs can be measured at the level of 1 nA m(2) and 8 x 10(-7), respectively. The precisions of measurements are mainly limited by the mechanical sensitivity of silicon fiber. The experimental results from a solid tungsten TM as an example show that the apparatus provides a feasible way to investigate the bulk effect of a full-size TM for the TianQin mission with enough resolution.

引用

页数：7

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