A high precision, compact electromechanical ground rotation sensor
- LIGO Laboratory, California Institute of Technology, MS 100-36, Pasadena, California 91125 (United States)
- Mayfield Senior School, 500 Bellefontaine Street, Pasadena, California 91105 (United States)
- Arcadia High School, 180 Campus Drive, Arcadia, California 91007 (United States)
- Department of Precision Instrument, Tsinghua University, Beijing 100084 (China)
- California Institute of Technology, Pasadena, California 91125 (United States)
- Department of Computer Science, University of Pisa, Largo B. Pontecorvo 3, 56127 Pisa (Italy)
- Sezione INFN Tor Vergata, via della Ricerca Scientifica 1, 00133 Roma (Italy)
- School of Physics, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, Western Australia 6009 (Australia)
- University of California, Los Angeles, 405 Hilgard Ave, Los Angeles, California 90095 (United States)
- National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan)
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{sup −11}m/√( Hz ). We describe the instrument construction and demonstrate low noise operation with a noise floor upper bound of 5.7 × 10{sup −9} rad /√( Hz ) at 10 mHz and 6.4 × 10{sup −10} rad /√( Hz ) at 0.1 Hz. The performance of the knife edge hinge is compatible with a behaviorur free of noise from dislocation self-organized criticality.
- OSTI ID:
- 22254875
- Journal Information:
- Review of Scientific Instruments, Vol. 85, Issue 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
Similar Records
A compact micro-wave synthesizer for transportable cold-atom interferometers
Design and initial characterization of a compact, ultra high vacuum compatible, low frequency, tilt accelerometer