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首页> 外文期刊>Review of Scientific Instruments >A high precision, compact electromechanical ground rotation sensor
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A high precision, compact electromechanical ground rotation sensor

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摘要

We present a mechanical rotation sensor consisting of a balance pivoting on a tungsten carbide knife edge. These sensors are important for precision seismic isolation systems, as employed in land-based gravitational wave interferometers and for the new field of rotational seismology. The position sensor used is an air-core linear variable differential transformer with a demonstrated noise floor of 1 × 10~(-11) m/(Hz)~(1/2). We describe the instrument construction and demonstrate low noise operation with a noise floor upper bound of 5.7 × 10~(-9) rad/(Hz)~(1/2) at 10 mHz and 6.4 × 10~(-10) rad/(Hz)~(1/2) at 0.1 Hz. The performance of the knife edge hinge is compatible with a behaviorur free of noise from dislocation self-organized criticality.

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  • 来源
    《Review of Scientific Instruments》 |2014年第5期|054502-1-054502-13|共13页
  • 作者单位

    LIGO Laboratory, California Institute of Technology, MS 100-36, Pasadena, California 91125, USA;

    Mayfield Senior School, 500 Bellefontaine Street, Pasadena, California 91105, USA;

    Arcadia High School, 180 Campus Drive, Arcadia, California 91007, USADepartment of Precision Instrument, Tsinghua University, Beijing 100084, ChinaCalifornia Institute of Technology, Pasadena, California 91125, USANational Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, JapanScuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, ItalyDepartment of Computer Science, University of Pisa, Largo B. Pontecorvo 3, 56127 Pisa, ItalySezione INFN Tor Vergata, via della Ricerca Scientifica 1, 00133 Roma, ItalySchool of Physics, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, AustraliaUniversity of California, Los Angeles, 405 Hilgard Ave, Los Angeles, California 90095, USA;

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  • 原文格式 PDF
  • 正文语种 英语
  • 中图分类 仪器、仪表;
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