Low-temperature mechanical dissipation of thermally evaporated indium film for use in interferometric gravitational wave detectors. (13th May 2015)

• Record Type: Journal Article
• Authors: Murray, Peter G; Martin, Iain W; Cunningham, Liam; Craig, Kieran; Hammond, Giles D; Hofmann, Gerd; Hough, James; Nawrodt, Ronny; Reifert, David; Rowan, Sheila
• Is Part Of: Classical and quantum gravity. Volume 32:Number 11(2015:Jun.)
• Publication Date: 2015-05-13
• Subjects: indium -- thermal evaporation -- thin film coatings -- thin film deposition -- low temperature physics -- gravitational wave detectors -- gravitational waves; Quantum gravity -- Periodicals; Gravitation -- Periodicals; Relativity (Physics) -- Periodicals; Space and time -- Periodicals; Periodicals; 521.1
• DOI: 10.1088/0264-9381/32/11/115014
• Languages: English
• ISSNs: 0264-9381

Abstract

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.