Tests with single two-wire pendulum

Document #:

LIGO-T080033-x0

Document type:

T - Technical notes

Abstract:

Using a single two-wire pendulum, investigated whether a permanent “set” caused by an enforced pitch is observed, whether the effect was proportional, and whether an increase in “d” distance would decrease the permanent “set” for a given input displacement.

Files in Document:

None

Topics:

• Suspensions
• Basic R&D

Authors:

• Ian Wilmut
• Justin Greenhalgh

Referenced by:

• LIGO-T0900103-v2: Hysteresis and pitch mode Q in the quad noise prototype and possible implications for thermal noise