Low-temperature mechanical dissipation of thermally evaporated indium film for use in interferometric gravitational wave detectors

Murray, P. G. , Martin, I. W. , Cunningham, L. , Craig, K., Hammond, G. D. , Hofmann, G., Hough, J. , Nawrodt, R., Reifert, D. and Rowan, S. (2015) Low-temperature mechanical dissipation of thermally evaporated indium film for use in interferometric gravitational wave detectors. Classical and Quantum Gravity, 32(11), 115014. (doi: 10.1088/0264-9381/32/11/115014)

Abstract

Indium bonding is under consideration for use in the construction of cryogenic mirror suspensions in future gravitational wave detectors. This paper presents measurements of the mechanical loss of a thermally evaporated indium film over a broad range of frequencies and temperatures. It provides an estimate of the resulting thermal noise at 20 K for a typical test mass geometry for a cryogenic interferometric gravitational wave detector from an indium layer between suspension elements.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Nawrodt, Dr Ronny and Hammond, Professor Giles and Rowan, Professor Sheila and Martin, Dr Iain and Cunningham, Dr Liam and Hough, Professor James and Murray, Dr Peter
• Authors: Murray, P. G., Martin, I. W., Cunningham, L., Craig, K., Hammond, G. D., Hofmann, G., Hough, J., Nawrodt, R., Reifert, D., and Rowan, S.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Research Centre: College of Science and Engineering > School of Physics and Astronomy > Institute for Gravitational Research
• Journal Name: Classical and Quantum Gravity
• Publisher: Institute of Physics
• ISSN: 0264-9381
• ISSN (Online): 1361-6382
• Copyright Holders: Copyright © 2015 IOP
• First Published: First published in Classical and Quantum Gravity 32(11):115014
• Publisher Policy: Reproduced under a Creative Commons License