Indium joints for cryogenic gravitational wave detectors
نویسندگان
چکیده
A viable technique for the preparation of highly thermal conductive joints between sapphire components in gravitational wave detectors is presented. The mechanical loss of such a joint was determined to be as low as 2×10 at 20 K and 2×10 at 300 K. The thermal noise performance of a typical joint is compared to the requirements of the Japanese gravitational wave detector, KAGRA. It is shown that using such an indium joint in the suspension system allows it to operate with low thermal noise. Additionally, results on the maximum amount of heat which can be extracted via indium Classical and Quantum Gravity Class. Quantum Grav. 32 (2015) 245013 (18pp) doi:10.1088/0264-9381/32/24/245013 Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. 0264-9381/15/245013+18$33.00 © 2015 IOP Publishing Ltd Printed in the UK 1 joints are presented. It is found that sapphire parts, joined by means of indium, are able to remove the residual heat load in the mirrors of KAGRA.
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تاریخ انتشار 2015