中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 力学研究所
  3. 中国科学院力学研究所
  4. 国家微重力实验室
Using DWS Optical Readout to Improve the Sensitivity of Torsion Pendulum

文献类型：期刊论文

作者Wang, Shaoxin3,4; Liu, Heshan3,4; Dai, Lei2; Luo, Ziren1,3,4; Xu, Peng1,3,4; Li, Pan3,4; Gao, Ruihong3,4; Li, Dayu2; Qi, Keqi3,4; Liu HS(刘河山)
刊名SENSORS
出版日期2023-10-01
卷号23期号:19页码:16
关键词torsion pendulum sensitivity optical readout DWS
DOI10.3390/s23198087
通讯作者Qi, Keqi(qikeqi@imech.ac.cn)
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 x 10-15 Nm/Hz1/2@10 mHz. This method could also be applied to future upgrades of similar systems.
WOS关键词GRAVITATIONAL-WAVE DETECTION ; TAIJI PROGRAM ; SPACE ; LISA ; INTERFEROMETER ; ANTENNA
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
WOS研究方向Chemistry ; Engineering ; Instruments & Instrumentation
语种英语
WOS记录号WOS:001081640900001
资助机构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
源URL[http://dspace.imech.ac.cn/handle/311007/93153]  
专题力学研究所_国家微重力实验室
通讯作者Qi, Keqi
作者单位1.Univ Chinese Acad Sci UCAS, Hangzhou Inst Adv Study, Hangzhou 310024, Peoples R China
2.Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China
3.Univ Chinese Acad Sci UCAS, Taiji Lab Gravitat Wave Universe Beijing Hangzhou, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Mech, Ctr Gravitat Wave Expt, Natl Micrograv Lab, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Shaoxin,Liu, Heshan,Dai, Lei,et al. Using DWS Optical Readout to Improve the Sensitivity of Torsion Pendulum[J]. SENSORS,2023,23(19):16.
APA Wang, Shaoxin.,Liu, Heshan.,Dai, Lei.,Luo, Ziren.,Xu, Peng.,...&罗子人.(2023).Using DWS Optical Readout to Improve the Sensitivity of Torsion Pendulum.SENSORS,23(19),16.
MLA Wang, Shaoxin,et al."Using DWS Optical Readout to Improve the Sensitivity of Torsion Pendulum".SENSORS 23.19(2023):16.

入库方式： OAI收割

来源：力学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。