TY - JOUR
T1 - Central heating radius of curvature correction (CHRoCC) for use in large scale gravitational wave interferometers
AU - Accadia, T.
AU - Bulten, H.J.
AU - Rabeling, D.S.
AU - van den Brand, J.F.J.
PY - 2013
Y1 - 2013
N2 - An asymmetry in radii of curvature of the mirrors in the arms of an interferometric gravitational-wave detector can degrade the performance of such a detector. In addition, the non-perfect mirror surface figures can excite higher order modes if the radii of curvature are close to higher order mode degeneracy. In this paper, we present a novel technique for changing the radii of curvature of arm cavity end mirrors by Central Heating Radius of Curvature Correction. This system was installed in the Virgo experiment in Cascina and proved to be an efficient, non-invasive solution with a large dynamic range. We present how the interferometer was tuned using such a system in order to obtain the best duty-cycles and sensitivity achieved with Virgo to date. © 2013 IOP Publishing Ltd.
AB - An asymmetry in radii of curvature of the mirrors in the arms of an interferometric gravitational-wave detector can degrade the performance of such a detector. In addition, the non-perfect mirror surface figures can excite higher order modes if the radii of curvature are close to higher order mode degeneracy. In this paper, we present a novel technique for changing the radii of curvature of arm cavity end mirrors by Central Heating Radius of Curvature Correction. This system was installed in the Virgo experiment in Cascina and proved to be an efficient, non-invasive solution with a large dynamic range. We present how the interferometer was tuned using such a system in order to obtain the best duty-cycles and sensitivity achieved with Virgo to date. © 2013 IOP Publishing Ltd.
U2 - 10.1088/0264-9381/30/5/055017
DO - 10.1088/0264-9381/30/5/055017
M3 - Article
SN - 0264-9381
VL - 30
SP - 055017
JO - Classical and Quantum Gravity
JF - Classical and Quantum Gravity
IS - 5
M1 - 055017
ER -
