Tilt adjustment for a portable absolute atomic gravimeter  

作　　者：Hong-Tai Xie Bin Chen Jin-Bao Long Chun Xue Luo-Kan Chen Shuai Chen 谢宏泰;陈斌;龙金宝;薛春;陈泺侃;陈帅(Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China;Shanghai Branch,CAS Center for Excellence in Quantum Information and Quantum Physics,University of Science and Technology of China,Shanghai 201315,China;Shanghai Research Center for Quantum Sciences,Shanghai 201315,China;Shanghai Division,QuantumCTek Co.,Ltd.Shanghai 201315,China)

机构地区：[1]Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China [2]Shanghai Branch,CAS Center for Excellence in Quantum Information and Quantum Physics,University of Science and Technology of China,Shanghai 201315,China [3]Shanghai Research Center for Quantum Sciences,Shanghai 201315,China [4]Shanghai Division,QuantumCTek Co.,Ltd.Shanghai 201315,China

出　　处：《Chinese Physics B》2020年第7期295-299,共5页中国物理B（英文版）

基　　金：Project supported by the National Key R&D Program of China(Grant No.2016YFA0301601);the National Natural Science Foundation of China(Grant No.11674301);Anhui Initiative in Quantum Information Technologies,China(Grant No.AHY120000);Shanghai Municipal Science and Technology Major Project,China(Grant No.2019SHZDZX01).

摘　　要：For an atomic gravimeter,the measured value of the Earth’s gravity acceleration g is the projection of the local gravity on the direction of Raman laser beams.To accurately measure the g,the Raman laser beams should be parallel to the g direction.We analyze the tilt effect of the Raman beams on g measurement and present a general method for the tilt adjustment.The systematic error caused by the tilt angle is evaluated as 0(+0,0.8)µGal(1µGal=10 nm/s^2)and the drift is also compensated in real time.Our method is especially suitable for the portable atomic gravimeter which focuses on the mobility and field applications.

关 键 词：atomic gravimeter systematic error tilt adjustment STABILITY 

分 类 号：TH761.5[机械工程—仪器科学与技术]