GPhyS, GREX, Philippe Tourrenc - Bienvenu sur le Site du GPhys

Prehistory of GREX
•
•
•
More than 25 years ago, GREX had an ancestor
Informal meetings triggered by Philippe Tourrenc French scientists
detection of GW
Meetings in ENS or IHP with Ch.Bordé, C.Cohen-Tannoudji, T.Damour, …
GREX =
Gravitation
Mathematicians
Expérimentale
Experimentalists
Thanks to that initiative and to those people, Virgo has been supported by CNRS
and exists today
This “GREX” community meets regularly and is growing up every day .
C.N.Man -
Colloque Kick-off, les Houches, 20-22/10/09
1
Philippe Tourrenc
1942-2007
Marie-Christine Angonin
Alain Brillet
Nary Man
Serge Reynaud
Jean-Yves Vinet
Peter Wolf…
Some articles
Matter waves from a relativistic point of view :
[1976] B. Linet et Ph. Tourrenc: « Linet-Tourrenc Formula »
[1994] Ch.J. Bordé, A. Karasievicz, Ph. Tourrenc: including spin
Applications:
[1999] P. Wolf et Ph. Tourrenc: systematics effects in atomic gravimeter
[2004] Ph. Tourrenc, M-C. Angonin, X. Ovido: gravitational gradients in HYPER
[2006] P. Delva, M-C. Angonin, Ph. Tourrenc: gravitational wave detection with
matter waves
[2007] SAGAS collaboration, Ph. Tourrenc: unfinished work…
LinetLinet-Tourrenc Formula (1976)
B. Linet et Ph. Tourrenc, Can. J. Phys. 54, 1129
u
1
1
ϕ ( x1λ ) = ∫ ξ µξ ν hµν du + ϕ ( x0λ )
2 u0
• simple, with few clear hypothesis
• All about atom interferometry :
h00 → acceleration, PPN tests
h0i → rotation, Lense-Thirring, geodetic precession, PPN tests
hij → Gravitational waves, PPN tests
Systematics effects in atomic gravimeters (1998)
P. Wolf and Ph. Tourrenc, Phys. Lett. A251, 241
2 3
g
'
h
k
T
3hkT
∆ϕ = − gk2T + g ' kT ( 127 gT − v0 ) +
+ 2T (v0 − gT ) ∆k −
∆k
2m
m
2
3
• applications to experiments (SYRTE, Stanford, …)
• new terms
• Confirmed later by Stanford team
• more general formulation : Ch.J. Bordé, J. Fils, C. Antoine… (2002/2003)
Gravitational wave detection with matter
waves (2005)
P. Delva, M-C. Angonin, Ph. Tourrenc, Phys. Lett. A357, 249
• Same formalism for matter waves and light.
• Discussion on the adapted metric.
• Sensitivity estimation
Spatial experiments (2004, 2007)
M-C. Angonin, X. Ovido, Ph. Tourrenc, Gen. Rel. & Grav., 36, 2, 411
SAGAS collaboration, Ph. Tourrenc, arXiv: 0711.0304
SAGAS:
• relativity tests through solar
system
• atomic clock, atomic
accelerometer, laser link
HYPER:
• Lense-Thirring with cold atoms
• importance of the gravitational
gradients
Gravitational wave detectors (Virgo)
70’s : Weber bars + interferometer prototypes
Many discussions … idea of a km interferometer
1982 : First discussion group on GW
C. Bordé, P. Tourrenc, A. Brillet, T. Damour, J-Y. Vinet
1984 : GROG (Groupe de Recherche sur les OG)
(A. Brillet, C. N. Man, J-Y. Vinet)
1985 : meeting GROG / A. Giazotto
=> project appears in CNRS prospective
1986 : Laboratoire Gravitation & Cosmologie Relativistes
(Paris VI) (Dir. P. Tourrenc) : a refuge for the GROG
« Le » GREG (1990-1992)
• Le GREG = « Groupe de REcherche sur la Gravitation »
– Submitted to CNRS by Alain Brillet and Philippe Tourrenc in
1990, Philippe Tourrenc and Alain Brillet in 1991
• 9 laboratories
– LHA (Orsay) LGCR (Paris: IHPJussieu)
LAL (Orsay) LAPP (Annecy)
LSH (Paris:ENS/Jussieu) LSLP (Paris:ESPCI)
LOA (Palaiseau) IOTA (Orsay) DARC (Meudon)
• Objectives :
– Structuration around Virgo
– Facilitate exchanges between different communities
« Le » GREG (1990-1992)
One meeting organised by Philippe in september 1991 !
Prehistory of GREX
•
•
•
More than 25 years ago, GREX had an ancestor
Informal meetings triggered by Philippe Tourrenc French scientists
detection of GW
Meetings in ENS or IHP with Ch.Bordé, C.Cohen-Tannoudji, T.Damour, …
GREX =
Gravitation
Mathematicians
Expérimentale
Experimentalists
Thanks to that initiative and to those people, Virgo has been supported by CNRS
and exists today
This “GREX” community meets regularly and is growing up every day .
C.N.Man -
Colloque Kick-off, les Houches, 20-22/10/09
11
from GREG to GREX (1992-1995)
Informal meetings between :
Philippe Tourrenc, Alain Brillet, Serge Reynaud,
Lluis Bel, Alain Bernard, Jean-Paul Berthias, Luc Blanchet,
Claude Boccara, Silvano Bonazzola, Richard Bonneville,
Christian Bordé, Patrick Bouchareine, Claude Cohen-Tannoudji,
Thibault Damour, Claude Fabre, Pierre Fayet, Marc-Thierry Jaekel,
Jean-Pierre Lasota, Jean-Alain Marck, Benoit Mours, Terry Quinn,
Christophe Salomon, Christian Veillet, Jean-Yves Vinet, Michel Yvert
…
GREX (1995-2006-…)
• Research group (GDR) support by CNRS
GREX = « Gravitation et Expérience »
http://www.spectro.jussieu.fr/GREX/
• 12 years of « Réunions du GREX »
annual meetings in Grasse, Gif, Paris, Nice
• 4 international conferences
Les Houches (1997), Pisa (1998, 2002), Florence (2006)
• Many results and success
(Virgo, PHARAO/ACES, MICROSCOPE, HYPER, ICE,
T2L2, ODYSSEY, SAGAS, and so on…)
• Link between various communities
GW itf detection brief story
•1973 Noise studies and initial design: Rainer Weiss (M.I.T)
•1975 Prototypes in Glasgow and Garching
•1980’s Recycling interferometers: Ron Drever (Glasgow and Caltech)
•1982 First activities in France and Italy (optics, seismic isolation)
•1986-1989 Proposals for kilometric projects
•1990-1994 Construction starts in USA and Italy
•2000-2004 Commissioning
•2007: First coincidence runs of initial detectors
•2007: CLIO (cryo detector), design of advanced detectors matured
•2008: First upgrades Virgo+, enhanced LIGO
•2009: more advanced detectors Europe, Australia
Virgo
Pisa
3 km
m
k
3
Teaching documents
• http://aramis.obspm.fr/~erga/
• Choose : Enseignement
• Then : Enseignements universitaires
• Pdf versions of his courses on :
Introduction to physics
Quantum and atomic physics
Thermodynamics
Statistics …
Books
Armand Colin 1992
Cambridge University Press
1997
Cocktail reception on Wednesday…