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.
Laser Interferometer Space Antenna: 6th International LISA Symposium
- Pub Date:
- November 2006
- Astrometric and interferometric instruments;
- General Relativity and Quantum Cosmology
- 6th International LISA Symposium