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题名	原子芯片陀螺仪的电学及磁学系统
作者	陈钰水
学位类别	硕士
答辩日期	2015
授予单位	中国科学院上海光学精密机械研究所
导师	张海潮
关键词	原子陀螺仪 原子芯片 原子干涉 微磁阱
其他题名	The Electronic System and Electromagnetic System for Atom Chip Gyroscope
中文摘要	根据物质波传播方式的不同可将量子传感器分为两类，一类是自由落体型，另一类为波导型。波导型量子传感器因其环路固定且原子芯片的性能稳定使其更有利于实用化和工程化，是未来量子传感器发展的主要方向之一。 本论文主要论述了波导型原子芯片陀螺仪的电学及磁学系统： 基于已制作的三环线原子芯片，本文通过计算表明三环线原子芯片可产生大磁阱梯度的环形导引，但在导线出口处存在导引缺口。为消除此缺口我们提出了基于单线阿基米德螺线的原子芯片，并对其磁场分性进行了详细的分析。为进一步平滑导引，又提出了一种基于TOP阱原理的三线阿基米德螺线结构。 我们计算并分析了矩形和圆形磁场线圈的磁场特性及机械结构特性，并结合实验需求研制了一套真空腔外的矩形磁场线圈系统，其测试结果与计算结果相吻合。借助3D打印快速成型技术，还提出并设计了新的精简磁场系统方案。 我们设计了集成的驱动电路系统，可同时驱动十二路大电流磁场线圈。通过控温制冷的方法我们改进了驱动电路的散热系统，使其更加稳定可靠。基于模块化的编程思路，我们对时序控制系统也做了改进和优化。 利用我们设计制作的电学和磁学系统，在实验上成功制备了冷原子云，并将其转移至芯片表面。最后结合目前的实验效果和前期的设计经验对驱动电路系统、磁场线圈系统提出了新的改进方案。
英文摘要	Based on the propagation of matter wave, quantum sensor can be divided into two categories, one is free fall sensor, and the other is the guided sensor. To fulfill the engineering and application requirements of being compact and robust, the guided sensor uses the waveguide on an atom chip, and shows promising future. The thesis mainly statements the electronic and electromagnetic system of the guided gyroscope on an atom chip: After calculating our atom chip that is based on the three ring wires configuration, we found that it can generate a tight ring waveguide, but there is a potential gap resulting from the input leads. To avoid this input lead effect, we proposed an atom chip based on Archimedean spiral configuration and analyzed its magnetic field distribution, which is an enclosed ring waveguide. To further improve the guide’s smoothness, we proposed a novel three Archimedes-spiral wires scheme which is based on the theory of TOP trap. We have calculated and analyzed the magnetic field distribution and the mechanical characteristics of the rectangular coils and round coils. In consideration of the experimental request, we developed a rectangular magnetic coils system outside the vacuum cell. The test results of this rectangular coils system is fit well with the calculation results. Owing to the rapid prototyping technology of 3D printing, we designed a simplified rectangular magnetic coils system. We also have designed and developed an integrated servo circuit system for the coils system, which can drive twelve pairs of magnetic coils at the same time. We also improved the servo circuit’s cooling system by the method of cooling and temperature control. The timing control system has also been optimized by the modular programming. Using this electronic and electromagnetic system, we have obtained cold atom cloud and realized cold atoms transport from magneto optical trap to the surface of the atom chip successfully. At the end of this paper, we put forward some new schemes to improve our drive circuit system and the electromagnetic coil system.
语种	中文
内容类型	学位论文
源URL	[http://ir.siom.ac.cn/handle/181231/16884]
专题	上海光学精密机械研究所_学位论文
推荐引用方式 GB/T 7714	陈钰水. 原子芯片陀螺仪的电学及磁学系统[D]. 中国科学院上海光学精密机械研究所. 2015.

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