Thermal noise of gram-scale cantilever flexures
Instrumentation and Detectors
2015-06-04 v3 General Relativity and Quantum Cosmology
Abstract
We present measurements of thermal noise in niobium and aluminium flexures. Our measurements cover the audio frequency band from 10Hz to 10kHz, which is of particular relevance to ground-based interferometric gravitational wave detectors, and span up to an order of magnitude above and below the fundamental flexure resonances at 50Hz - 300Hz. Our results are well-explained by a simple model in which both structural and thermoelastic loss play a role. The ability of such a model to explain this interplay is important for investigations of quantum-radiation-pressure noise and the standard quantum limit.
Keywords
Cite
@article{arxiv.1502.05768,
title = {Thermal noise of gram-scale cantilever flexures},
author = {Thanh T-H. Nguyen and Bram J. J. Slagmolen and Conor M. Mow-Lowry and John Miller and Adam Mullavey and Stefan Goßler and Paul A. Altin and Daniel A. Shaddock and David E. McClelland},
journal= {arXiv preprint arXiv:1502.05768},
year = {2015}
}
Comments
11 pages, 5 figures