R. M. Cutler
University of Birmingham
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Featured researches published by R. M. Cutler.
Classical and Quantum Gravity | 2012
S. Aston; M. A. Barton; A. S. Bell; N. Beveridge; B. Bland; A. Brummitt; G. Cagnoli; C. A. Cantley; L. Carbone; A. Cumming; L. Cunningham; R. M. Cutler; R. J. S. Greenhalgh; G. Hammond; K. Haughian; T. Hayler; A. Heptonstall; J. Heefner; D. Hoyland; J. Hough; R. Jones; J. S. Kissel; R. Kumar; N. A. Lockerbie; D. Lodhia; I. W. Martin; P. G. Murray; J. O’Dell; M. V. Plissi; S. Reid
We describe the design of the suspension systems for the major optics for Advanced LIGO, the upgrade to LIGO—the Laser Interferometric Gravitational-Wave Observatory. The design is based on that used in GEO600—the German/UK interferometric gravitational wave detector, with further development to meet the more stringent noise requirements for Advanced LIGO. The test mass suspensions consist of a four-stage or quadruple pendulum for enhanced seismic isolation. To minimize suspension thermal noise, the final stage consists of a silica mirror, 40 kg in mass, suspended from another silica mass by four silica fibres welded to silica ears attached to the sides of the masses using hydroxide-catalysis bonding. The design is chosen to achieve a displacement noise level for each of the seismic and thermal noise contributions of 10^(−19) m/√Hz at 10 Hz, for each test mass. We discuss features of the design which has been developed as a result of experience with prototypes and associated investigations.
Classical and Quantum Gravity | 2012
L. Carbone; S. Aston; R. M. Cutler; A. Freise; J. Greenhalgh; J. Heefner; D. Hoyland; N. A. Lockerbie; D. Lodhia; N. A. Robertson; Clive C. Speake; K. A. Strain; A. Vecchio
We have developed, produced and characterized integrated sensors, actuators and the related read-out and drive electronics that will be used for the control of the Advanced LIGO suspensions. The overall system consists of the BOSEMs (a displacement sensor with an integrated electromagnetic actuator), the satellite boxes (the BOSEM readout and interface electronics) and six different types of coil-driver units. In this paper, we present the design of this read-out and control system, we discuss the related performance relevant for the Advanced LIGO suspensions, and we report on the experimental activity finalized at the production of the instruments for the Advanced LIGO detectors.
