| Автор | The VIRGO Collaboration (presented by Giovanni Losurdo) |
| Дата выпуска | 2002-04-07 |
| dc.description | The VIRGO superattenuator (SA) is effective in suppressing seismic noise below the expected thermal noise level above 4 Hz. However, the residual mirror motion associated with the SA normal modes can saturate the interferometer control system. This motion is reduced by implementing a wideband (DC–5 Hz) multidimensional active control (the so-called inertial damping) which makes use of both accelerometers and position sensors and of a digital signal processing (DSP) system. Feedback forces are exerted by coil–magnet actuators on the top of an inverted pendulum pre-isolator stage. The residual root mean square motion of the mirror in 10 s is less than 0.1 μm. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The inertial damping of the VIRGO superattenuator and the residual motion of the mirror |
| Тип | paper |
| DOI | 10.1088/0264-9381/19/7/354 |
| Electronic ISSN | 1361-6382 |
| Print ISSN | 0264-9381 |
| Журнал | Classical and Quantum Gravity |
| Том | 19 |
| Первая страница | 1631 |
| Последняя страница | 1637 |
| Аффилиация | The VIRGO Collaboration (presented by Giovanni Losurdo); Istituto Nazionale di Fisica Nucleare—Sezione di Firenze, Lgo E Fermi, 2, Firenze, Italy |
| Выпуск | 7 |
