Thoughts on Damping the Sidles-Sigg torques on the Testmass

Document #:

LIGO-T1800503-v2

Document type:

T - Technical notes

Abstract:

Some calculations related to a proposal. Is it possible to damp the ~3 Hz Sidles Sigg mode by sensing a local TM and driving the PUM. seems like is it possible.

Files in Document:

• T1800503_damping_testmass_SS.pdf (929.0 kB)

Other Files:

• source_tex.zip (349.7 kB)

Topics:

• Seismic Isolation
• Modelling
• Suspensions
• Sensing and Control

Authors:

• Edgard Bonilla
• Brian Lantz

Keywords:

proposal optical integration SPI

Notes and Changes:

adds BTL section on calc included in proposal

Related Documents:

• LIGO-T1800504: Thoughts on Damping the Testmass from the UIM

Referenced by:

• LIGO-G2102249-v1: Suspension thoughts