Search Results - "Harry, Gregory M."

Pendulum mode thermal noise in advanced interferometers: a comparison of fused silica fibers and ribbons in the presence of surface loss by Gretarsson, Andri M., Harry, Gregory M., Penn, Steven D., Saulson, Peter R., Startin, William J., Rowan, Sheila, Cagnoli, Gianpietro, Hough, Jim

“…The use of fused-silica ribbons as suspensions in gravitational wave interferometers can result in significant improvements in pendulum mode thermal noise…”
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Two-stage superconducting-quantum-interference-device amplifier in a high-Q gravitational wave transducer by Harry, Gregory M., Jin, Insik, Paik, Ho Jung, Stevenson, Thomas R., Wellstood, Frederick C.

“…We report on the total noise from an inductive motion transducer for a gravitational-wave antenna. The transducer uses a two-stage superconducting quantum…”
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Frequency and surface dependence of the mechanical loss in fused silica by Penn, Steven D., Ageev, Alexander, Busby, Dan, Harry, Gregory M., Gretarsson, Andri M., Numata, Kenji, Willems, Phil

“…We have compiled measurements of the mechanical loss in fused silica from samples spanning a wide range of geometries and resonant frequency in order to model…”
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Gravitational radiation from gamma-ray burst-supernovae as observational opportunities for LIGO and VIRGO by van Putten, Maurice H. P. M., Levinson, Amir, Lee, Hyun Kyu, Regimbau, Tania, Punturo, Michele, Harry, Gregory M.

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The Big Bang Observer: High laser power for gravitational wave astrophysics by Harry, Gregory M, Fritschel, Peter, Folkner, William, Shaddock, Daniel A, Phinney, E Sterl

“…The Big Bang Observer(BBO) is a proposed space-based gravitational wave detector which will look for the stochastic background of gravitational waves from the…”
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The effects of heating on mechanical loss in tantala/silica optical coatings by Abernathy, Matthew R., Harry, Gregory M., Travasso, Flavio, Martin, Iain, Reid, Stuart, Rowan, Sheila, Hough, Jim, Fejer, Martin M., Route, Roger, Penn, Steve, Armandula, Helena, Gretarsson, Andri

“…Second-generation interferometric gravitational-wave detectors will operate at temperatures noticeably above room temperature. Study was done to determine what…”
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Comparison of advanced gravitational-wave detectors by Harry, Gregory M., Houser, Janet L., Strain, Kenneth A.

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Mechanical Ringdown Studies of Large-Area Substrate-Transferred GaAs/AlGaAs Crystalline Coatings by Penn, Steven D, Kinley-Hanlon, Maya M, MacMillan, Ian A. O, Heu, Paula, Follman, David, Deutsch, Christoph, Cole, Garrett D, Harry, Gregory M

“…We investigated elastic loss in GaAs/AlGaAs multilayers to help determine the suitability of these coatings for future gravitational wave detectors. We…”
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The Big Bang Observer: High Laser Power for Gravitational Wave Astrophysics by Harry, G.M., Folkner, W., Fritschel, P., Phinney, E.S., Shaddock, D.A.

“…The Big Bang Observer(BBO) is a proposed space-based gravitational wave detector which will look for the stochastic background of gravitational waves from the…”
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Dissipation of mechanical energy in fused silica fibers by Gretarsson, Andri M, Harry, Gregory M

“…Rev.Sci.Instrum. 70 (1999) 4081-4087 For thermal noise considerations of LIGO suspensions, the sources of dissipation in the suspending fibers must be…”
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Comparison of advanced gravitational-wave detectors by Harry, Gregory M, Houser, Janet L, Strain, Kenneth A

“…Phys.Rev. D65 (2002) 082001 We compare two advanced designs for gravitational-wave antennas in terms of their ability to detect two possible gravitational wave…”
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Frequency and surface dependence of the mechanical loss in fused silica by Penn, Steven D, Ageev, Alexander, Busby, Dan, Harry, Gregory M, Gretarsson, Andri M, Numata, Kenji, Willems, Phil

“…We have compiled measurements of the mechanical loss in fused silica from samples spanning a wide range of geometries and resonant frequency in order to model…”
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Effects of electrical charging on the mechanical Q of a fused silica disk by Mortonson, Michael J, Vassiliou, Christophoros C, Ottaway, David J, Shoemaker, David H, Harry, Gregory M

“…Rev.Sci.Instrum.74:4840-4845,2003 We report on the effects of an electrical charge on mechanical loss of a fused silica disk. A degradation of Q was seen that…”
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Gravitational radiation from gamma-ray bursts as observational opportunities for LIGO and VIRGO by van Putten, Maurice H. P. M, Levinson, Amir, Lee, Hyun Kyu, Regimbau, Tania, Punturo, Michele, Harry, Gregory M

“…Phys.Rev.D69:044007,2004 Gamma-ray bursts are believed to originate in core-collapse of massive stars. This produces an active nucleus containing a rapidly…”
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Detectability of gravitational wave events by spherical resonant-mass antennas by Harry, Gregory M, Stevenson, Thomas R, Paik, Ho Jung

“…Phys.Rev.D54:2409-2420,1996 We have calculated signal-to-noise ratios for eight spherical resonant-mass antennas interacting with gravitational radiation from…”
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Titania-doped tantala/silica coatings for gravitational-wave detection by Harry, Gregory M, Abernathy, Matthew R, Becerra-Toledo, Andres E, Armandula, Helena, Black, Eric, Dooley, Kate, Eichenfield, Matt, Nwabugwu, Chinyere, Villar, Akira, Crooks, D. R. M, Cagnoli, Gianpietro, Hough, Jim, How, Colin R, MacLaren, Ian, Murray, Peter, Reid, Stuart, Rowan, Sheila, Sneddon, Peter H, Fejer, Martin M, Route, Roger, Penn, Steven D, Ganau, Patrick, Mackowski, Jean-Marie, Michel, Christophe, Pinard, Laurent, Remillieux, Alban

“…Class.Quant.Grav.24:405-416,2007 Reducing thermal noise from optical coatings is crucial to reaching the required sensitivity in next generation…”
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Two stage superconducting quantum interference device amplifier in a high-Q gravitational wave transducer by Harry, Gregory M, Jin, Insik, Paik, Ho Jung, Stevenson, Thomas R, Wellstood, Frederick C

“…We report on the total noise from an inductive motion transducer for a gravitational-wave antenna. The transducer uses a two-stage SQUID amplifier and has a…”
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Detectability of gravitational wave events by spherical resonant-mass antennas by Harry, GM, Stevenson, TR, Paik, HJ

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Effect of Optical Coating and Surface Treatments on Mechanical Loss in Fused Silica by Gretarsson, Andri M, Harry, Gregory M, Penn, Steven D, Saulson, Peter R, Schiller, John J, Startin, William J

“…We report on the mechanical loss in fused silica samples with various surface treatments and compare them with samples having an optical coating. Mild surface…”
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High quality factor measured in fused silica by Penn, Steven D, Harry, Gregory M, Gretarsson, Andri M, Kittelberger, Scott E, Saulson, Peter R, Schiller, John J, Smith, Joshua R, Swords, Sol O

“…Rev.Sci.Instrum. 72 (2001) 3670-3673 We have measured the mechanical dissipation in a sample of fused silica drawn into a rod. The sample was hung from a…”
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