Haughian, K., Chen, D., Cunningham, L. , Hofmann, G., Hough, J. , Murray, P.G., Nawrodt, R., Rowan, S., van Veggel, A.A. and Yamamoto, K. (2016) Mechanical loss of a hydroxide catalysis bond between sapphire substrates and its effect on the sensitivity of future gravitational wave detectors. Physical Review D, 94(8), 082003. (doi:10.1103/PhysRevD.94.082003)
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Abstract
Hydroxide catalysis bonds are low mechanical loss joints which are used in the fused silica mirror suspensions of current room temperature interferometric gravitational wave detectors, one of the techniques which was essential to allow the recent detection of gravitational radiation by LIGO. More sensitive detectors may require cryogenic techniques with sapphire as a candidate mirror and suspension material, and thus hydroxide catalysis bonds are under consideration for jointing sapphire. This paper presents the first measurements of the mechanical loss of such a bond created between sapphire substrates and measured down to cryogenic temperatures. The mechanical loss is found to be 0.03±0.01 at room temperature, decreasing to (3±1)×10−4 at 20 K. The resulting thermal noise of the bonds on several possible mirror suspensions is presented.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Nawrodt, Dr Ronny and van Veggel, Dr Marielle and Rowan, Professor Sheila and Cunningham, Dr Liam and Hough, Professor James and Haughian, Dr Karen and Murray, Dr Peter |
| Authors: | Haughian, K., Chen, D., Cunningham, L., Hofmann, G., Hough, J., Murray, P.G., Nawrodt, R., Rowan, S., van Veggel, A.A., and Yamamoto, K. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Physical Review D |
| Publisher: | American Physical Society |
| ISSN: | 1550-7998 |
| ISSN (Online): | 1550-2368 |
| Published Online: | 12 October 2016 |
| Copyright Holders: | Copyright © 2016 American Physical Society |
| First Published: | First published in Physical Review D 94(8):082003 |
| Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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