Full Tensor SQUID Gradiometer for airborne exploration
Full Tensor SQUID Gradiometer for airborne exploration
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DOI：
10.1071/aseg2012ab296
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
A. Chwala;R. Stolz;V. Zakosarenko;L. Fritzsch;M. Schulz;A. Rompel;L. Polomé;M. Meyer;H. Meyer
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文献类型：
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作者：
A. Chwala;R. Stolz;V. Zakosarenko;L. Fritzsch;M. Schulz;A. Rompel;L. Polomé;M. Meyer;H. Meyer
IPHT Jena和Supracon AG在低温超导（LTS）平面型一阶SQUID（超导量子干涉器件）梯度仪的基础上，研制了全张量磁梯度仪（FTMG）系统。该系统由英美资源集团（Anglo American）和戴比尔斯（De Beers）共同拥有的Spectrem Air Ltd.运营。本文详细介绍了系统的设置、数据处理和实现的性能参数。传感器在液氦中的工作温度为4.2 K。基底长度仅为3.5厘米，可以进行真正的梯度测量。有了六个梯度计，整个磁梯度张量可以测量冗余，允许高系统可靠性和增强降噪技术的应用。FTMG系统的数据将允许对底层磁源进行三维反演。给出了具有高空间分辨率的二维张量分量图的实例。
Summary IPHT Jena and Supracon AG develop and fabricate full tensor magnetic gradiometer (FTMG) systems, based on low-temperature-superconducting (LTS) planar-type SQUID (Superconducting Quantum Interference Device) gradiometers of first order. The systems are operated by Spectrem Air Ltd., jointly owned by Anglo American and De Beers. This paper describes details of the system setup, data processing and achieved performance parameters. The sensors work at 4.2 K in liquid helium. With a base length of only 3.5 cm a real gradient measurement is possible. With six gradiometer the full magnetic gradient tensor can be measured with redundancy, allowing for high system reliability and the application of enhanced noise reduction techniques. The data of the FTMG system will allow for a 3D inversion for the underlying magnetic sources. Examples of 2D maps of tensor components with high spatial resolution are shown.