Readout system and predicted performance of a low-noise low-frequency horizontal accelerometer
- 作者：Alessandro Bertolini ; Riccardo DeSalvo ; Francesco Fidecaro ; Mario Francesconi ; Szabolcs Marka ; Virginio Sannibale ; Duccio Simonetti ; Akiteru Takamori and Hareem Tariq
- 刊名：Nuclear Instruments and Methods in Physics Research Section A ; Accelerators ; Spectrometers ; Detectors and Associated Equipment
- 出版年：2006
- 期刊代码：41_01689002
- 类别：ph
- 出版时间：1 August 2006
- 卷：564
- 期：1
- 页码：579-586
- 文件大小：243 K
摘要
The readout system of a new very low noise low-frequency, force-feedback accelerometer is presented. The horizontal accelerometer carrying this sensor has been designed to be integrated in an advanced seismic isolation system for interferometric gravitational wave detectors. To make it suitable for ultra-high-vacuum operation and to reduce the probability of failures of the in-vacuum components, the accelerometer is equipped with a high-resolution capacitance sensor fully driven by remote signal conditioning electronics. The instrument's performance is not compromised by cabling lengths of up to 15 m. The accelerometer, equipped with this readout scheme, should be able to detect the inertial displacement of a platform with a root-mean-square noise less than 1 nm, integrated over all the frequencies above 0.01 Hz. We plan to implement the same readout scheme in a companion vertical sensor now being designed.