Review: Inertial Sensors for Low-Frequency Seismic Vibration Measurement

Collette, Christophe; Janssens, Stefan; Fernandez-Carmona, Pablo; Artoos, Kurt; Guinchard, Michael; Hauviller, C.; Preumont, André

doi:10.1785/0120110223

Cited by 54 publications

(32 citation statements)

References 41 publications

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“…All inertial sensors are assumed identical: they are made up of one d.o.f. oscillator, with a typical resonance of 2 Hz, and the percentage of damping is 0.3 [22]. These values are typical of commercial geophones.…”

Section: B Active Isolationmentioning

confidence: 86%

Budgeting and control of the mechanical noise in the International Linear Collider final focus system

Tshilumba

Oriunno

Markiewicz

et al. 2014

Phys. Rev. ST Accel. Beams

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In this paper, we present a simplified vibration model of the silicon detector (SiD), where the final doublet (QD0) is captured inside the detector and the penultimate magnet (QF1) is inside the machine tunnel. Ground motion spectra measured at the detector hall at SLAC have been used together with a spectrum of the technical noise on the detector. The model predicts that the maximum level of rms (root mean square) vibration seen by QD0 is well below the capture range of the interaction point (IP) feedback system available in the ILC. With the addition of an active stabilization system on QD0, it is also possible to get closer to the stability requirements of the compact linear collider (CLIC). These results can have important implications for CLIC.

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Section: B Active Isolationmentioning

confidence: 86%

Budgeting and control of the mechanical noise in the International Linear Collider final focus system

Tshilumba

Oriunno

Markiewicz

et al. 2014

Phys. Rev. ST Accel. Beams

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“…Collette et al (2012) reviews inertial sensors and points out the tilt-horizontal coupling effects affecting these instruments at low frequencies. Tilthorizontal coupling induced by gravity on horizontal inertial sensors has been studied and discussed for more than a century.…”

Section: Introductionmentioning

confidence: 99%

Review: Tilt‐Free Low‐Noise Seismometry

Matichard

Evans

2015

Bulletin of the Seismological Society of America

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Inertial instruments used to measure horizontal motion are sensitive to tilt. Tilt coupling induced by gravity exerting a force along the sensing axis of the instrument as a function of its inclination must be accounted for in numerous seismological studies and seismic isolation applications. There are, in theory, many ways to separate tilt and horizontal motion components by combining the measurements of several sensors, and produce tilt-free estimations of the horizontal motion. This article reviews these configurations and analyses limitations related to sensor noise and geometrical couplings. It concludes with a discussion on the use of suspension mechanisms as an alternative to signal subtraction methods.

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“…Depending on the frequency range of interest, three types of sensors are commonly used to measure seismic vibrations [1]: seismic accelerometers, geophones and broadband seismometers. A comparison of these inertial sensors can be found in [2]. For more than 30 years, seismometers have reached sufficient resolution and dynamic range to capture seismic signals at most location of the Earth surface in a broad frequency range extending typically from 1 min to 100 Hz (see e.g.…”

Section: Introductionmentioning

confidence: 99%

Linear encoder based low frequency inertial sensor

Collette

Lambert

Hellegouarch

et al. 2015

MATEC Web of Conferences

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Abstract. For many applications, there is an increasing demand for low cost, high-resolution inertial sensors, which are capable of operating in harsh environments. Recently, a prototype of small optical inertial sensor has been built, using a Michelson interferometer. A resolution of 3 pm/√Hz has been obtained above 4 Hz using only low cost components. Compared to most state-of-the-art devices, this prototype did not contain any coil, which offers several important advantages, including a low thermal noise in the suspension and a full compatibility with magnetic environments (like particle collider). On the other hand, the Michelson is known to be tricky to tune, especially when one attempts to miniaturize the sensor. In this paper, we will propose a novel concept of inertial sensor, based on a linear encoder. Compared to the Michelson, the encoder is much more easy to mount, and the calibration more stable. The price to pay is a reduced resolution. In order to overcome this limitation, we amplify mechanically the relative motion between the support and the inertial mass. First results obtained with the new sensor will be discussed, and compared with the Michelson inertial sensor.

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Review: Inertial Sensors for Low-Frequency Seismic Vibration Measurement

Cited by 54 publications

References 41 publications

Budgeting and control of the mechanical noise in the International Linear Collider final focus system

Budgeting and control of the mechanical noise in the International Linear Collider final focus system

Review: Tilt‐Free Low‐Noise Seismometry

Linear encoder based low frequency inertial sensor

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