中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Using DWS Optical Readout to Improve the Sensitivity of Torsion Pendulum

文献类型:期刊论文

作者S. Wang, H. Liu, L. Dai, Z. Luo, P. Xu, P. Li, R. Gao, D. Li and K. Qi
刊名Sensors
出版日期2023
卷号23期号:19
ISSN号14248220
DOI10.3390/s23198087
英文摘要In space gravitational wave detection missions, a drag-free system is used to keep the test mass (TM) free-falling in an ultralow-noise environment. Ground verification experiments should be carried out to clarify the shielding and compensating capabilities of the system for multiple stray force noises. A hybrid apparatus was designed and analyzed based on the traditional torsion pendulum, and a technique for enhancing the sensitivity of the torsion pendulum system by employing the differential wavefront sensing (DWS) optical readout was proposed. The readout resolution experiment was then carried out on an optical bench that was designed and established. The results indicate that the angular resolution of the DWS signal in optical readout mode can reach the level of 10 nrad/Hz1/2 over the full measurement band. Compared with the autocollimator, the sensitivity of the torsional pendulum is noticeably improved, and the background noise is expected to reach 4.5 × 10−15 Nm/Hz1/2@10 mHz. This method could also be applied to future upgrades of similar systems. © 2023 by the authors.
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源URL[http://ir.ciomp.ac.cn/handle/181722/67957]  
专题中国科学院长春光学精密机械与物理研究所
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GB/T 7714
S. Wang, H. Liu, L. Dai, Z. Luo, P. Xu, P. Li, R. Gao, D. Li and K. Qi. Using DWS Optical Readout to Improve the Sensitivity of Torsion Pendulum[J]. Sensors,2023,23(19).
APA S. Wang, H. Liu, L. Dai, Z. Luo, P. Xu, P. Li, R. Gao, D. Li and K. Qi.(2023).Using DWS Optical Readout to Improve the Sensitivity of Torsion Pendulum.Sensors,23(19).
MLA S. Wang, H. Liu, L. Dai, Z. Luo, P. Xu, P. Li, R. Gao, D. Li and K. Qi."Using DWS Optical Readout to Improve the Sensitivity of Torsion Pendulum".Sensors 23.19(2023).

入库方式: OAI收割

来源:长春光学精密机械与物理研究所

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