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Design and initial characterization of a compact, ultra high vacuum compatible, low frequency, tilt accelerometer

O'Toole, A. and Peña Arellano, F. E. and Rodionov, A. V. and Shaner, M. and Sobacchi, E. and Dergachev, V. and DeSalvo, R. and Asadoor, M. and Bhawal, A. and Gong, P. and Kim, C. and Lottarini, A. and Minenkov, Y. and Murphy, C. (2014) Design and initial characterization of a compact, ultra high vacuum compatible, low frequency, tilt accelerometer. Review of Scientific Instruments, 85 (7). Art. No. 075003. ISSN 0034-6748. https://resolver.caltech.edu/CaltechAUTHORS:20140929-092331120

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Abstract

A compact tilt accelerometer with high sensitivity at low frequency was designed to provide low frequency corrections for the feedback signal of the Advanced Laser Interferometer Gravitational Wave Observatory active seismic attenuation system. It has been developed using a Tungsten Carbide ceramic knife-edge hinge designed to avoid the mechanical 1/f noise believed to be intrinsic in polycrystalline metallic flexures. Design and construction details are presented; prototype data acquisition and control limitations are discussed. The instrument's characterization reported here shows that the hinge is compatible with being metal-hysteresis-free, and therefore also free of the 1/f noise generated by the dislocation Self-Organized Criticality in the metal. A tiltmeter of this kind will be effective to separate the ground tilt component from the signal of horizontal low frequency seismometers, and to correct the ill effects of microseismic tilt in advanced seismic attenuation systems.


Item Type:Article
Related URLs:
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http://scitation.aip.org/content/aip/journal/rsi/85/7/10.1063/1.4890285PublisherArticle
http://dx.doi.org/10.1063/1.4890285DOIArticle
Additional Information:© 2014 AIP Publishing LLC. Received 30 April 2014; accepted 2 July 2014; published online 23 July 2014. The authors gladly acknowledge Carlo Galli for advice on construction techniques and material choice, Gianni Gennaro for help in the instrument design, Charles Hagedorn and Kryshna Venkateswara for many useful discussions. This work has been done by members or visitors of LIGO laboratory in California Institute of Technology, while supported by funding from United States National Science Foundation and operates under cooperative Agreement No. PHY-0757058.
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Funding AgencyGrant Number
NSF Cooperative AgreementPHY-0757058
Issue or Number:7
Record Number:CaltechAUTHORS:20140929-092331120
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140929-092331120
Official Citation: Design and initial characterization of a compact, ultra high vacuum compatible, low frequency, tilt accelerometer A. O’Toole, F. E. Peña Arellano, A. V. Rodionov, M. Shaner, E. Sobacchi, V. Dergachev, R. DeSalvo, M. Asadoor, A. Bhawal, P. Gong, C. Kim, A. Lottarini, Y. Minenkov and C. Murphy Rev. Sci. Instrum. 85, 075003 (2014); http://dx.doi.org/10.1063/1.4890285
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50088
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:29 Sep 2014 16:39
Last Modified:03 Oct 2019 07:20

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