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23 April 2024

» arxiv » 0805.2387

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Effect of energy deposited by cosmic-ray particles on interferometric gravitational wave detectors
Kazuhiro Yamamoto ; Hideaki Hayakawa ; Atsushi Okada ; Takashi Uchiyama ; Shinji Miyoki ; Masatake Ohashi ; Kazuaki Kuroda ; Nobuyuki Kanda ; Daisuke Tatsumi ; Yoshiki Tsunesada ;
Date:	15 May 2008
Abstract:	We investigated the noise of interferometric gravitational wave detectors due to heat energy deposited by cosmic-ray particles. We derived a general formula that describes the response of a mirror against a cosmic-ray passage. We found that there are differences in the comic-ray responses (the dependence of temperature and cosmic-ray track position) in cases of interferometric and resonant gravitational wave detectors. The power spectral density of vibrations caused by low-energy secondary muons is 100-times smaller than the goal sensitivity of future second-generation interferometer projects, such as LCGT and Advanced LIGO. The arrival frequency of high-energy cosmic-ray muons that generate enough large showers inside mirrors of LCGT and Advanced LIGO is one per a millennium. We also discuss the probability of exotic-particle detection with interferometers.
Source:	arXiv, 0805.2387
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