The first round result from the TianQin-1 satellite

被引：134

作者：

Luo, Jun ^{[1
,2
,3
,4
]}

Bai, Yan-Zheng ^{[3
,4
]}

Cai, Lin ^{[3
,4
]}

Cao, Bin ^{[1
,2
]}

Chen, Wei-Ming ^{[1
,2
]}

Chen, Yu ^{[1
,2
]}

Cheng, De-Cong ^{[3
,4
]}

Ding, Yan-Wei ^{[1
,2
]}

Duan, Hui-Zong ^{[1
,2
]}

Gou, Xingyu ^{[5
]}

Gu, Chao-Zheng ^{[1
,2
]}

Gu, De-Feng ^{[1
,2
]}

He, Zi-Qi ^{[1
,2
]}

Hu, Shuang ^{[3
,4
]}

Hu, Yuexin ^{[6
]}

Huang, Xiang-Qing ^{[1
,2
]}

Jiang, Qinghua ^{[5
]}

Jiang, Yuan-Ze ^{[3
,4
]}

Li, Hong-Gang ^{[3
,4
]}

Li, Hong-Yin ^{[3
,4
]}

Li, Jia ^{[3
,4
]}

Li, Ming ^{[6
]}

Li, Zhu ^{[1
,2
]}

Li, Zhu-Xi ^{[3
,4
]}

Liang, Yu-Rong ^{[3
,4
]}

Liao, Fang-Jie ^{[1
,2
]}

Liu, Yan-Chong ^{[3
,4
]}

Liu, Li ^{[3
,4
]}

Liu, Pei-Bo ^{[1
,2
]}

Liu, Xuhui ^{[5
]}

Liu, Yuan ^{[1
,2
]}

Lu, Xiong-Fei ^{[1
,2
]}

Luo, Yan ^{[1
,2
]}

Mei, Jianwei ^{[1
,2
]}

Ming, Min ^{[3
,4
]}

Qu, Shao-Bo ^{[3
,4
]}

Tan, Ding-Yin ^{[3
,4
]}

Tang, Mi ^{[3
,4
]}

Tu, Liang-Cheng ^{[1
,2
,3
,4
]}

Wang, Cheng-Rui ^{[3
,4
]}

Wang, Fengbin ^{[6
]}

Wang, Guan-Fang ^{[1
,2
]}

Wang, Jian ^{[1
,2
]}

Wang, Lijiao ^{[5
]}

Wang, Xudong ^{[5
]}

Wei, Ran ^{[7
]}

Wu, Shu-Chao ^{[3
,4
]}

Xiao, Chun-Yu ^{[3
,4
]}

Xie, Meng-Zhe ^{[3
,4
]}

Xu, Xiao-Shi ^{[1
,2
]}

机构：

[1] Sun Yat Sen Univ, TianQin Res Ctr Gravitat Phys, Zhuhai Campus, Zhuhai 519082, Peoples R China

[2] Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai Campus, Zhuhai 519082, Peoples R China

[3] Huazhong Univ Sci & Technol, PGMF, Ctr Gravitat Expt, Sch Phys,MOE Key Lab Fundamental Phys Quant Measu, Wuhan 430074, Peoples R China

[4] Huazhong Univ Sci & Technol, PGMF, Hubei Key Lab Gravitat & Quantum Phys, Wuhan 430074, Peoples R China

[5] Beijing Inst Control Engn, Beijing 100094, Peoples R China

[6] DFH Satellite Co Ltd, Beijing 100094, Peoples R China

[7] Beijing Inst Spacecraft Syst Engn, Beijing 100094, Peoples R China

来源：

CLASSICAL AND QUANTUM GRAVITY | 2020年 / 37卷 / 18期

基金：

中国国家自然科学基金;

关键词：

gravitational waves detection; drag free control; inertial sensing; micro-Newton thrusters; laser interferometer;

D O I：

10.1088/1361-6382/aba66a

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The TianQin-1 satellite (TQ-1), which is the first technology demonstration satellite for the TianQin project, was launched on 20 December 2019. The first round of experiment had been carried out from 21 December 2019 until 1 April 2020. The residual acceleration of the satellite is found to be about 1 x 10(-10) m/s(2)/Hz(1/2)at 0.1 Hz and about 5 x 10(-11) m/s(2)/Hz(1/2)at 0.05 Hz, measured by an inertial sensor with a sensitivity of 5 x 10(-12) m/s(2)/Hz(1/2)at 0.1 Hz. The micro-Newton thrusters has demonstrated a thrust resolution of 0.1 mu N and a thrust noise of 0.3 mu N/Hz(1/2)at 0.1 Hz. The residual noise of the satellite with drag-free control is 3 x 10(-9) m/s(2)/Hz(1/2)at 0.1 Hz. The noise level of the optical readout system is about 30 pm/Hz(1/2)at 0.1 Hz. The temperature stability at temperature monitoring position is controlled to be about +/- 3 mK per orbit, and the mismatch between the center-of-mass of the satellite and that of the test mass is measured with a precision of better than 0.1 mm.

引用

页数：14

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