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Directional radiati...
Directional radiative cooling thermal compensation for gravitational wave interferometer mirrors
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- Kamp, Carl Justin, 1982 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Kawamura, H. (author)
- Yokoyama Junior High School
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- Passaquieti, R. (author)
- Universita di Pisa,University of Pisa
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- DeSalvo, R. (author)
- California Institute of Technology (Caltech)
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(creator_code:org_t)
- Elsevier BV, 2009
- 2009
- English.
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In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. - : Elsevier BV. - 0168-9002. ; 607:3, s. 530-537
- Related links:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The concept of utilizing directional radiative cooling to correct the problem of thermal lensing in the mirrors of the LIGO/VIRGO gravitational wave detectors has been shown and has prospects for future use. Two different designs utilizing this concept, referred to as the baffled and parabolic mirror solutions, have been proposed with different means of controlling the cooling power. The technique takes advantage of the power naturally radiated by the mirror surfaces at room temperature to prevent their heating by the powerful stored laser beams. The baffled solution has been simulated via COMSOL Multiphysics as a design tool. Finally, the parabolic mirror concept was experimentally validated with the results falling in close agreement with theoretical cooling calculations. The technique of directional radiative thermal correction can be reversed to image heat rings on the mirrors periphery to remotely and dynamically correct their radius of curvature without subjecting the mirror to relevant perturbations. (C) 2009 Elsevier B.V. All rights reserved.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Thermal compensation
- Mirror
- Thermal radiation
- Lensing
- laser-beams
- Interferometer
- analytical models
Publication and Content Type
- art (subject category)
- ref (subject category)
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