Tri-Axial Correction Coil Layout for Compact Optical Lattice Clocks
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Solution Overview
Problem
Conventional magnetic field correction coils for optical lattice clocks are large in size, hindering miniaturization and transportability, and struggle to accurately equalize magnetic fields in complex environments.
Innovation Solution
A triaxial magnetic field correction coil system comprising Helmholtz and non-Helmholtz type coil groups, strategically arranged and electrically connected to correct magnetic fields along multiple axes, allowing for precise field equalization even in complex environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional magnetic field correction coils are used, then magnetic field equalization can be achieved, but the device size becomes large, hindering miniaturization and transportability
Solution Approach 1:
The magnetic field correction system is divided into multiple independent coil groups (first coil group and second coil group) with different configurations. Each coil group targets specific spatial derivatives of magnetic field components, allowing distributed correction across the measurement space while reducing individual coil sizes.
Solution Approach 2:
The invention adds a new dimension to magnetic field correction by introducing coil groups that correct not only the zeroth-order magnetic field component but also first-order and second-order spatial derivatives. This multi-dimensional correction approach enables accurate field equalization in a compact configuration.
2Reliability
If conventional magnetic field correction coils are used, then magnetic field correction can be performed, but the device complexity increases and transportability is hindered
Solution Approach 1:
The coil groups are designed to serve multiple functions simultaneously. The same coil configurations are used to correct different spatial derivatives of magnetic field components along multiple axes, reducing the need for separate specialized coils for each correction task.
Solution Approach 2:
The invention changes the operational parameters of the coil system by controlling current magnitudes and directions differently across coil groups. This allows a single physical coil configuration to achieve multiple correction objectives through parameter adjustment rather than physical reconfiguration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The triaxial magnetic field correction coil system enables the miniaturization and transportability of optical lattice clock physics packages while maintaining high accuracy in magnetic field correction, essential for precise time measurement and geodetic applications.
Implementation Method 1
a Helmholtz type first coil group that is formed to have a point-symmetric shape centered in a clock transition space in which atoms are arranged, with respect to a direction of a first axis passing through the clock transition space; and a non-Helmholtz type second coil group that is formed to have a point-symmetric shape centered in the clock transition space with respect to the direction of the first axis
Data Source
AI summary
A tri-axial magnetic field correction coil includes a first coil group and a second coil group with respect to an X-axis direction that passes through a clock transition space in which atoms are disposed. The first coil group is a Helmholtz-type coil composed in a point-symmetrical shape around the clock transition space. The second coil group is composed in a point-symmetrical shape around the clock transition space with respect to the X-axis direction, and is a non-Helmholtz-type coil that differs from the first coil group in terms of coil size, coil shape, or distance between coils.