High Sensitivity Torsion Balance Tests for LISA Proof Mass Modeling

Details High Sensitivity Torsion Balance Tests for LISA Proof Mass Modeling High Sensitivity Torsion Balance Tests for LISA Proof Mass Modeling

2007-02-08

arxiv.org/abs/gr-qc/0702053v1

AIPConf.Proc.873:151-157,2006

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6th International LISA Symposium

Scientific paper

10.1063/1.2405035

We have built a highly sensitive torsion balance to investigate small forces between closely spaced gold coated surfaces. Such forces will occur between the LISA proof mass and its housing. These forces are not well understood and experimental investigations are imperative. We describe our torsion balance and present the noise of the system. A significant contribution to the LISA noise budget at low frequencies is the fluctuation in the surface potential difference between the proof mass and its housing. We present first results of these measurements with our apparatus.

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