Recent results of a seismically isolated optical table prototype designed for advanced LIGO

Document #:

LIGO-P070132-x0

Document type:

P - Publications

Abstract:

The Horizontal Access Module Seismic Attenuation System (HAM-SAS) is a mechanical device expressly designed to isolate a multipurpose optical table and fit in the tight space of the LIGO HAM Ultra-High-Vacuum chamber. Seismic attenuation in the detectors' sensitivity frequency band is achieved with state of the art passive mechanical attenuators. These devices should provide an attenuation factor of about 70dB above 10Hz at the suspension point of the Advanced LIGO triple pendulum suspension. Automatic control techniques are used to position the optical table and damp rigid body modes. Here, we report the main results obtained from the full scale prototype installed at the MIT LIGO Advanced System Test Interferometer (LASTI) facility. Seismic attenuation performance, control strategies, improvements and limitations are also discussed.

Files in Document:

• P070132-00.pdf (105.5 kB)

Other Files:

• P070132-P.pdf (589.7 kB)

Topics:

• Public relations
• Document Migration from the old DCC

Authors:

• David Ottaway
• Riccardo DeSalvo
• Dennis Coyne
• Alberto Stochino
• Yoichi Aso
• Szabolcs Marka
• Virginio Sannibale
• Benjamin Abbott
• James Clark
• Ik Siong Heng
• Matthew Pitkin
• Graham Woan

Notes and Changes:

Rev P070132-00-Z:
- Full document number: LIGO-P070132-00-Z
- Author(s): James Clark; I. S. Heng; Matt Pitkin; Graham Woan
- Document date: 2007-10-26
- Document received date: 2007-10-26
- Document entry date: 2007-10-26

Publication Information:

http://www.iop.org/EJ/abstract/1742-6596/122/1/012010