Calibration of a compact absolute atomic gravimeter

• 作者: Bin Chen Chun Xue Hong-Tai Xie Jin-Bao Long Luo-Kan Chen Shuai Chen
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2020,（9）
• 所属期刊栏目: SPECIAL TOPIC—Ultracold atom and its application in precision measurement
• 页码范围: 91-99
• 页数: 9页
• 语种: 英文
• DOI: 10.1088/1674-1056/aba27b

摘要

Compact atomic gravimeters are the potential next generation precision instruments for gravity survey from fundamental research to broad field applications.We report the calibration results of our home build compact absolute atomic gravimeter USTC-AG02 at Changping Campus,the National Institute of Metrology (NIM),China in January 2019.The sensitivity of the atomic gravimeter reaches 35.5 μGal/√τ (1 μGal =1 × 10-8 m/s2) and its long-term stability reaches 0.8 μGal for averaging over 4000 seconds.Considering the statistical uncertainty,the dominant instrumental systematic errors and environmental effects are evaluated and corrected within a total uncertainty (2σ) of 15.3 μGal.After compared with the reference g value given by the corner cube gravimeter NIM-3A,the atomic gravimeter USTC-AG02 reaches the degree of equivalence of 3.7 μGal.