CN-224216889-U - Auxiliary device for evaluating coriolis force of atomic interferometer

Abstract

The application belongs to the field of atomic inertial measurement, and particularly discloses an auxiliary device for evaluating the Coriolis force of an atomic interferometer, which comprises a lifting rotary supporting module and a tilt detection and adjustment module, wherein the tilt detection and adjustment module comprises a tilt detection unit and a tilt adjustment unit, the tilt detection unit is used for detecting the tilt of a vacuum container, the tilt adjustment unit is positioned at the bottom of the vacuum container and used for supporting the vacuum container and adjusting the vacuum container to be horizontal according to the tilt, and the lifting rotary supporting module can be coaxially arranged under the vacuum container of the atomic interferometer and can drive the vacuum container to rotate so as to modulate the Coriolis force. The application can realize the effect of rotating the vacuum container in the atomic interferometer with high efficiency and high precision.

Inventors

• LUO QIN
• LI LI
• ZHOU HANG
• DENG XIAOBING
• CHENG YUAN
• XU WENJIE
• CHEN LELE
• ZHOU MINKANG
• HU ZHONGKUN

Assignees

• 华中科技大学

Dates

Publication Date

20260508

Application Date

20250716

Claims (9)

1. 1. The auxiliary device for evaluating the Coriolis force of the atomic interferometer is characterized by comprising a lifting rotary supporting module and a tilt detection and adjustment module, wherein the tilt detection and adjustment module comprises a tilt detection unit (8) and a tilt adjustment unit (9), the tilt detection unit (8) is used for detecting the tilt of a vacuum container in the atomic interferometer, the tilt adjustment unit (9) is positioned at the bottom of the vacuum container and used for supporting the vacuum container and adjusting the levelness of the vacuum container, and the lifting rotary supporting module is coaxially arranged under the vacuum container and can drive the vacuum container to rotate.
2. 2. The auxiliary device according to claim 1, wherein the lifting rotary supporting module comprises a supporting disc (1), a supporting structure (2) and a chassis (3) which are coaxially arranged and sequentially connected, the supporting disc (1) is positioned right below the vacuum container and is connected with the vacuum container in a matched mode, the supporting structure (2) is a hydraulic lifting rod, a bearing (4) is arranged at the center of the supporting disc (1), one end of the hydraulic lifting rod penetrates through the bearing (4), the other end of the hydraulic lifting rod is connected with the center of the chassis (3), and the hydraulic lifting rod can rotate around the central axis of the hydraulic lifting rod, so that the supporting disc (1) is driven to rotate relative to the chassis (3).
3. 3. Auxiliary device according to claim 2, characterized in that the chassis (3) is provided with a first connection hole (31) in the centre and a second connection hole (21) in the centre of the other end of the hydraulic lifting rod, the first connection hole (31) being connected by means of a rotation shaft after alignment with the second connection hole (21).
4. 4. Auxiliary device according to claim 2, characterized in that the bearing (4) is a trapezoidal bearing.
5. 5. Auxiliary device according to claim 2, characterized in that the support disc (1) is provided with a first rotation mark (11), the chassis (3) is provided with a second rotation mark (32), and the angle between the first rotation mark (11) and the second rotation mark (32) is 180 ° before the hydraulic lifting rod drives the support disc (1) to rotate.
6. 6. Auxiliary device according to claim 5, characterized in that the hydraulic lifting lever drives the support disc (1) to rotate back and forth, the angular error between the first rotary marker (11) and the second rotary marker (32) not exceeding 1%.
7. 7. Auxiliary device according to claim 1, characterized in that a connection positioning shaft (5) is arranged on one surface of the lifting rotary support module facing the bottom of the vacuum container, the inclination adjusting unit (9) is fixed on a supporting plate (6), a connection hole corresponding to the connection positioning shaft (5) is arranged on the supporting plate (6), and the connection positioning shaft (5) can be in alignment connection and fixation with the connection hole.
8. 8. Auxiliary device according to claim 1, characterized in that the tilt detection unit (8) is arranged beside the vacuum vessel and in the same plane as the vacuum vessel.
9. 9. Auxiliary device according to claim 2, characterized in that the support disc (1) and the chassis (3) are discs of the same size.

Description

Auxiliary device for evaluating coriolis force of atomic interferometer Technical Field The application belongs to the field of atomic inertial measurement, and particularly relates to an auxiliary device for evaluating the coriolis force of an atomic interferometer. Background Atomic interferometry has been rapidly developed and widely used in recent years, for example, for measuring gravitational acceleration g, gravitational gradients, fine structural constants, newton's gravitational constants, and the like. Atomic interferometry is also used in basic physics for examining equivalence principles and lorentz breaks, measuring gravitational waves, and the like. The measurement accuracy of atomic interferometers depends on systematic error assessment, where the coriolis force effect caused by earth rotation and the east-west velocity coupling of the radicals is an important systematic error. The coriolis force in an atomic interferometer is usually measured differentially by rotating the vacuum vessel horizontally to obtain the contribution of the coriolis force effect, and the method can differentiate all errors except the coriolis force effect, thus being a reliable evaluation method. However, the rotation time of the device and method for evaluating the coriolis force by rotating the existing vacuum container is very long, such as in literature "Anne Louchet-Chauvet et al., The influence of transverse motion within an atomic gravimeter. New J. Phys. 13 065025(2011)" in the paris astronomical table 2011, the rotation time is up to 2 hours, and the rotation precision of the used rotating device is difficult to control, the deviation is large, and the evaluation error of the coriolis force is large. Disclosure of utility model Aiming at the defects of the prior art, the application aims to provide an auxiliary device for evaluating the coriolis force of an atomic interferometer, and aims to solve the problem that the evaluation result of the coriolis force is inaccurate due to overlong rotation time and difficult control of rotation precision of the existing vacuum container. The application provides an auxiliary device for evaluating the Coriolis force of an atomic interferometer, which comprises a lifting rotary supporting module and a tilt detection and adjustment module, wherein the tilt detection and adjustment module comprises a tilt detection unit and a tilt adjustment unit, the tilt detection unit is used for detecting the tilt of a vacuum container in the atomic interferometer, the tilt adjustment unit is positioned at the bottom of the vacuum container and used for supporting the vacuum container and adjusting the levelness of the vacuum container, and the lifting rotary supporting module can be coaxially arranged under the vacuum container and can drive the vacuum container to rotate. Further, the lifting rotary supporting module comprises a supporting disc, a supporting structure and a chassis which are coaxially arranged and sequentially connected, the supporting structure is a hydraulic lifting rod, a bearing is arranged at the center of the supporting disc, one end of the hydraulic lifting rod is arranged in the bearing in a penetrating mode, the other end of the hydraulic lifting rod is connected with the center of the chassis, and the hydraulic lifting rod can rotate around the central axis of the hydraulic lifting rod relative to the chassis. Further, a first connecting hole is formed in the center of the chassis, a second connecting hole is formed in the center of the other end of the hydraulic lifting rod, and the first connecting hole is aligned with the second connecting hole and then connected through a rotating shaft. Further, the bearing is a trapezoid bearing. Further, a first rotary mark is arranged on the supporting disc, a second rotary mark is arranged on the chassis, and an included angle between the first rotary mark and the second rotary mark is 180 degrees before the hydraulic lifting rod drives the supporting disc to rotate. Further, the hydraulic lifting rod drives the supporting disc to rotate before and after, and the angle error between the first rotary mark and the second rotary mark is not more than 1%. Furthermore, a connecting positioning shaft is arranged on one surface of the lifting rotary supporting module facing the bottom of the vacuum container, the inclination adjusting unit is fixed on a supporting plate, a connecting hole corresponding to the connecting positioning shaft is formed in the supporting plate, and the connecting positioning shaft can be in counterpoint grafting fixation with the connecting hole. Further, the inclination detection unit is arranged beside the vacuum container and is positioned on the same plane as the vacuum container. Further, the support plate and the chassis are circular plates with the same size. In general, the above technical solutions conceived by the present application have the following beneficial effects compared wit