Notes about Noise in Gravitational Wave Antennas Created by Cosmic Rays

Abstract

Thermodynamical fluctuations of temperature in mirrors may produce surface fluctuations not only through thermal expansion in mirror body but also through thermal expansion in mirror coating. We analyze the last "surface" effect which can be larger than the first "volume" one due to larger thermal expansion coefficient of coating material and smaller effective volume. In particular, these fluctuations may be important in laser interferometric gravitational antennae.

9 pages, LaTex

References in corpus (3)

• Dual-Resonator Speed Meter for a Free Test Mass
• The "optical lever" intracavity readout scheme for gravitational-wave antennae
• Effects of electrical charging on the mechanical Q of a fused silica disk

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