Mechanical Loss of Reflective Coating at Low Temperature

Details Mechanical Loss of Reflective Coating at Low Temperature Mechanical Loss of Reflective Coating at Low Temperature

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....5.3111y&link_type=abstract

Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I

Physics

Scientific paper

We measured the mechanical loss of the reflective coating of a mirror at low temperature in order to evaluate the thermal noise of the Large-scale Cryogenic Gravitational wave telescope (LCGT). We found that the measured coating loss is indep endent of the temperature at between 4 K and 300 K. This means that the mirror cooling suppresses the thermal motion caused by the coating loss effectively. The thermal noise of LCGT was estimated to be smaller than its goal sensitivity limit.

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