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Dive into the research topics where J.-M. Mackowski is active.

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Featured researches published by J.-M. Mackowski.


Classical and Quantum Gravity | 1997

The Virgo interferometer

B. Caron; A. Dominjon; C. Drezen; R. Flaminio; X. Grave; F. Marion; L. Massonnet; C. Mehmel; R. Morand; B. Mours; V. Sannibale; M. Yvert; D. Babusci; S. Bellucci; S. Candusso; G. Giordano; G. Matone; J.-M. Mackowski; L. Pinard; F. Barone; E. Calloni; L. Di Fiore; M. Flagiello; F. Garufi; A. Grado; Maurizio Longo; M. Lops; S. Marano; L. Milano; S. Solimeno

The Virgo gravitational wave detector is an interferometer with 3 km long arms in construction near Pisa to be commissioned in the year 2000. Virgo has been designed to achieve a strain sensitivity of a few times at 200 Hz. A large effort has gone into the conception of the mirror suspension system, which is expected to reduce noise to the level of at 10 Hz. The expected signals and main sources of noise are briefly discussed; the choices made are illustrated together with the present status of the experiment.


Classical and Quantum Gravity | 2008

Measurements of a low-temperature mechanical dissipation peak in a single layer of Ta2O5 doped with TiO2

I. W. Martin; H. Armandula; C. Comtet; M. M. Fejer; A. M. Gretarsson; G. M. Harry; J. Hough; J.-M. Mackowski; Ian MacLaren; C. Michel; J.-L. Montorio; N. Morgado; R. Nawrodt; S. Penn; S. Reid; A. Remillieux; R. Route; S. Rowan; C. Schwarz; P. Seidel; W. Vodel; Anja Zimmer

Thermal noise arising from mechanical dissipation in oxide coatings is a major limitation to many precision measurement systems, including optical frequency standards, high-resolution optical spectroscopy and interferometric gravity wave detectors. Presented here are measurements of dissipation as a function of temperature between 7 K and 290 K in ion-beam-sputtered Ta2O5 doped with TiO2, showing a loss peak at 20 K. Analysis of the peak provides the first evidence of the source of dissipation in doped Ta2O5 coatings, leading to possibilities for the reduction of thermal noise effects.


International Europhysics Conference on High Energy Physics HEP 93 | 1997

The Virgo Project

J.-Y. Vinet; F. Bondu; A. Brillet; F. Cleva; H. Heitmann; L. Latrach; N. Man; M. Pham Tu; M. Barsuglia; V. Brisson; F. Cavalier; M. Davier; P. Hello; P. Heusse; F. Lediberder; P. Marin; B. Caron; A. Dominjon; C. Drezen; R. Flaminio; X. Grave; F. Marion; L. Massonet; C. Mehmel; R. Morand; B. Mours; V. Sannibale; M. Yvert; L. Dognin; P. Ganau

The Virgo project is a Italian-French collaboration aiming at the construction of a long baseline interferometric antenna for the detection of gravitational radiation signals of cosmic origin. We describe the principles of the system, and high-light the technical challenges we need to overcome for reaching a sensitiity as low as 10−23Hz−1/2.The gravitational clustering of collisionless particles in an expanding universe is modelled using some simple physical ideas. I show that it is possible to understand the nonlinear clustering in terms of three well defined regimes: (1) linear regime; (2) quasilinear regime which is dominated by scale-invariant radial infall and (3) nonlinear regime dominated by nonradial motions and mergers. Modelling each of these regimes separately I show how the nonlinear two point correlation function can be related to the linear correlation function in hierarchical models. This analysis leads to results which are in good agreement with numerical simulations thereby providing an explanation for numerical results. Using this model and some simple extensions, it is possible to understand the transfer of power from large to small scales and the behaviour of higher order correlation functions. The ideas presented here will also serve as a powerful analytical tool to investigate nonlinear clustering in different models.


6th Topical Seminar on Experimental Apparatus for Particle Physics and Astrophysics | 1997

The VIRGO interferometer for gravitational wave detection.

B. Caron; A. Dominjon; C. Drezen; R. Flaminio; X. Grave; F. Marion; L. Massonnet; C. Mehmel; R. Morand; B. Mours; V. Sannibale; M. Yvert; D. Babusci; S. Bellucci; S. Candusso; G. Giordano; G. Matone; J.-M. Mackowski; L. Pinard; F. Barone; E. Calloni; L. Di Fiore; M. Flagiello; F. Garuti; A. Grado; Maurizio Longo; M. Lops; S. Marano; L. Milano; S. Solimeno

The Virgo gravitational wave detector is an interferometer with 3 km long arms in construction near Pisa in Italy. The accessible sources at the design sensitivity and main noises are reviewed. Virgo has devoted a significant effort to extend sensitivity to low frequency reaching the strain level h = 10−21 Hz−1/2 at 10 Hz while at 200 Hz h = 3 · 10−23 Hz−1/2. Design choices and status of construction are presented.


Nuclear Physics | 1997

The VIRGO interferometer for gravitational wave detection

B. Caron; A. Dominjon; C. Drezen; R. Flaminio; X. Grave; F. Marion; L. Massonnet; C. Mehmel; R. Morand; B. Mours; V. Sannibale; M. Yvert; D. Babusci; S. Bellucci; S. Candusso; G. Giordano; G. Matone; J.-M. Mackowski; L. Pinard; F. Barone; E. Calloni; L. Difiore; M. Flagiello; F. Garuti; A. Grado; Maurizio Longo; M. Lops; S. Marano; L. Milano; S. Solimeno


Archive | 1995

The VIRGO experiment: status of the art.

B. Caron; A. Dominjon; F. Marion; L. Massonet; R. Morand; B. Mours; M. Yvert; Danilo Babusci; Hao Fang; Gianfranco Giordano; G. Matone; J.-M. Mackowski; M. Napolitano; L. Pinard; C. Boccara; P. Gleizes; V. Loriette; Jean Paul Roger; F. Barone; E. Calloni; L. Di Fiore; A. Grado; Michael J. Longo; G. Marra; L. Milano; Guido Russo; S. Solimeno; F. Bondu; A. Brillet; V. Brisson


Archive | 1997

VIRGO Status Report, November 1996

A. Brillet; Danilo Babusci; S. Bellucci; S. Candusso; Gianfranco Giordano; G. Matone; C. Boccara; Ph. Gleyzes; V. Loriette; Jean Paul Roger; E. Bougleux; M. Mazzoni; P. G. Pelfer; R. Stanga; J.-M. Mackowski; L. Pinard; V. Brisson; F. Cavalier; M. Davier; P. Hello; P. Heusse; P. Marin; Luca Matone; Y. Acker; M. Barsuglia; B. Bhawal; F. Bondu; F. Cleva; H. Heitmann; J.-M. Innocent


International Conference on Gravitational Waves - Sources and Detectors | 1996

State of the art of the Virgo experiment

B. Caron; A. Dominjon; C. Drezen; R. Flaminio; X. Grave; F. Marion; L. Massonnet; C. Mehmel; R. Morand; B. Mours; V. Sannibale; M. Yvert; D. Babusci; S. Bellucci; S. Candusso; G. Giordano; G. Matone; J.-M. Mackowski; L. Pinard; C. Boccara; P. Gleizes; V. Loriette; J.P. Roger; P. G. Pelfer; R. Stanga; F. Barone; E. Calloni; L. Di Fiore; M. Flagiello; F. Garufi


Archive | 1997

SIESTA A General Purpose Simulation Program for the VIRGO Experiment

F. Marion; B. Caron; D. Castellazzi; M.-L. Dedieu; Laurent Derome; A. Dominjon; C. Drezen; R. Flaminio; X. Grave; L. Massonnet; C. Mehmel; R. Morand; B. Mours; Virginio Sannibale; M. Yvert; E. Bougleux; M. Mazzoni; P. G. Pelfer; R. Stanga; Danilo Babusci; S. Belluci; S. Candusso; Gianfranco Giordano; G. Matone; J.-M. Mackowski; L. Pinard; F. Barone; E. Calloni; L. Di Fiore; M. Flagiello


Nuclear Physics | 1996

Status of the VIRGO experiment

B. Caron; A. Dominjon; C. Drezen; R. Flaminio; X. Grave; F. Marion; L. Massonnet; C. Mehmel; R. Morand; B. Mours; M. Yvert; Danilo Babusci; Gianfranco Giordano; G. Matone; J.-M. Mackowski; M. Napolitano; L. Pinard; L. Dognin; F. Barone; E. Calloni; L. Difiore; M. Flagiello; A. Grado; Maurizio Longo; M. Lops; S. Marano; L. Milano; Guido Russo; S. Solimeno; Y. Acker

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A. Dominjon

Centre national de la recherche scientifique

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B. Caron

Centre national de la recherche scientifique

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R. Morand

Centre national de la recherche scientifique

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B. Mours

Laboratoire d'Annecy-le-Vieux de physique des particules

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C. Mehmel

Centre national de la recherche scientifique

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L. Pinard

Centre national de la recherche scientifique

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R. Flaminio

Centre national de la recherche scientifique

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X. Grave

Centre national de la recherche scientifique

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