| 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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| Corresponding Author | Qi, Keqi([email protected]) |
| Source Publication | SENSORS
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| 2023-10-01 | |
| Volume | 23Issue:19Pages:16 |
| Abstract | 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. |
| Keyword | torsion pendulum sensitivity optical readout DWS |
| DOI | 10.3390/s23198087 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001081640900001 |
| WOS Keyword | GRAVITATIONAL-WAVE DETECTION ; TAIJI PROGRAM ; SPACE ; LISA ; INTERFEROMETER ; ANTENNA |
| WOS Research Area | Chemistry ; Engineering ; Instruments & Instrumentation |
| WOS Subject | Chemistry, Analytical ; Engineering, Electrical & Electronic ; Instruments & Instrumentation |
| Funding Project | 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 |
| Funding Organization | 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 |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Qi, Keqi |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/93154 |
| Collection | 微重力重点实验室 |
| Recommended Citation 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.Rp_Au:Qi, Keqi |
| 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. |
| 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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| Jp2023A213.pdf（6022KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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