| Using DWS Optical Readout to Improve the Sensitivity of Torsion Pendulum |
| Wang SX(王少鑫); Liu HS(刘河山) ; Dai, Lei; Luo ZR(罗子人); Xu P(徐鹏); Li P(李磐); Gao RH(高瑞弘); Li, Dayu; Qi KQ(齐克奇)
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| 通讯作者 | Qi, Keqi(qikeqi@imech.ac.cn)
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| 发表期刊 | SENSORS
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| 2023-10-01
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| 卷号 | 23期号:19页码:16 |
| 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 x 10-15 Nm/Hz1/2@10 mHz. This method could also be applied to future upgrades of similar systems. |
| 关键词 | torsion pendulum
sensitivity
optical readout
DWS
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| DOI | 10.3390/s23198087
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:001081640900001
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| 关键词[WOS] | GRAVITATIONAL-WAVE DETECTION
; TAIJI PROGRAM
; SPACE
; LISA
; INTERFEROMETER
; ANTENNA
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| WOS研究方向 | Chemistry
; Engineering
; Instruments & Instrumentation
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| WOS类目 | Chemistry, Analytical
; Engineering, Electrical & Electronic
; Instruments & Instrumentation
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| 资助项目 | The authors would like to thank the Taiji Scientific Collaboration for many useful discussions on the Taiji-1 implementation process. The authors also thank the National Microgravity Laboratory (NML) of Imech for supporting the experimental conditions of t
; National Microgravity Laboratory (NML) of Imech
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| 项目资助者 | The authors would like to thank the Taiji Scientific Collaboration for many useful discussions on the Taiji-1 implementation process. The authors also thank the National Microgravity Laboratory (NML) of Imech for supporting the experimental conditions of t
; National Microgravity Laboratory (NML) of Imech
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| 论文分区 | 二类
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| 力学所作者排名 | 1
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| RpAuthor | Qi, Keqi
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/93154
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| 专题 | 微重力重点实验室
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推荐引用方式
GB/T 7714 |
Wang SX,Liu HS,Dai, Lei,et al. Using DWS Optical Readout to Improve the Sensitivity of Torsion Pendulum[J]. SENSORS,2023,23,19,:16.
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| APA |
王少鑫.,刘河山.,Dai, Lei.,罗子人.,徐鹏.,...&齐克奇.(2023).Using DWS Optical Readout to Improve the Sensitivity of Torsion Pendulum.SENSORS,23(19),16.
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| MLA |
王少鑫,et al."Using DWS Optical Readout to Improve the Sensitivity of Torsion Pendulum".SENSORS 23.19(2023):16.
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