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Gravitational waves group status H.J. Bulten 1 H.J. Bulten - Nikhef Annual meeting, Dec. 15, 2009.

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Presentation on theme: "Gravitational waves group status H.J. Bulten 1 H.J. Bulten - Nikhef Annual meeting, Dec. 15, 2009."— Presentation transcript:

1 Gravitational waves group status H.J. Bulten 1 H.J. Bulten - Nikhef Annual meeting, Dec. 15, 2009

2 People Group at present Senior staff : Thomas Bauer (also LHCb) Jo van den Brand Henk Jan Bulten Chris van den Broeck Harry van der Graaf (<50 %) Tjeerd Ketel (also LHCb) Jan Willem van Holten (theory) Postdocs David Rabeling PhD students Mark Beker Matthieu Blom Tjonnie Li Gideon Koekoek ( theory) Sipho van der Putten Technical footprint Electronics: Henk Groenstege, Han Voet Design and construction: IMC end mirror FEA: Eric Hennes, Frans Mul (Corijn, Rosier) ET: Martin Doets 2H.J. Bulten - Nikhef Annual meeting, Dec. 15, 2009 Chris van den Broeck Mathieu Blom Tjonnie Li Mark Beker

3 FOM Program Conveners NIKHEF J.F.J. van den Brand (program leader), Th.S. Bauer, H.J. Bulten, H. van der Graaf, J.W. van Holten, T. Ketel Nijmegen, IMAPP G. Nelemans, J. Kuijpers Approved Nov. 2009 First discovery advanced LIGO/Virgo Towards observatories ET/LISA Primordial gravitational waves H.J. Bulten - Nikhef Annual meeting, Dec. 15, 20093

4 Virgo Associate member French-Italian-Dutch Virgo collaboration F. Linde (june 2009) – EGO council meetings W. Ubachs (laserlab VU) – Virgo STAC member Joint LIGO-Virgo science run since Jul. 7, 2009 Installation monolithic suspensions – Jan 2010 – June 2010 Factor 5 in sensitivity Joint data taking July/August 2010 ? Advanced Virgo/LIGO 2014 H.J. Bulten - Nikhef Annual meeting, Dec. 15, 20094

5 Upgrade Virgo+/advanced Virgo Nikhef (+VU) responsibilities Vacuum cryolinks Suspension 6 external + 2 internal benches IMC end mirror+dihedron Alignment system Phase Camera 5H.J. Bulten - Nikhef Annual meeting, Dec. 15, 2009

6 Upgrade Virgo+/advanced Virgo Nikhef (+VU) responsibilities Vacuum cryolinks Suspension 6 external + 2 internal benches IMC end mirror+dihedron Alignment system Phase Camera 6H.J. Bulten - Nikhef Annual meeting, Dec. 15, 2009 Including actively controlled power recycling mirror

7 Upgrade Virgo+/advanced Virgo Nikhef (+VU) responsibilities Vacuum cryolinks Suspension 6 external + 2 internal benches IMC end mirror+dihedron Alignment system Phase Camera 7H.J. Bulten - Nikhef Annual meeting, Dec. 15, 2009

8 Upgrade Virgo+/advanced Virgo Nikhef (+VU) responsibilities Vacuum cryolinks Suspension 6 external + 2 internal benches IMC end mirror+dihedron Alignment system Phase Camera 8H.J. Bulten - Nikhef Annual meeting, Dec. 15, 2009 Vacuum Cryolinks : M. Doets, JFJ van den Brand Towers ~10 -7 mbar 3km long arms < 10 -9 mbar Seismic isolation benches Active and passive systems F. Mul, E. Hennes, JFJ van den Brand

9 Upgrade Virgo+/advanced Virgo Nikhef (+VU) responsibilities Vacuum cryolinks Suspension 6 external + 2 internal benches IMC end mirror+dihedron Alignment system Phase camera 9 Alignment electronics Han Voet, Henk Groenstege, Tjeerd Ketel, Harry van der Graaf Input-mode cleaner end mirror, dihedron Jo vd Brand, Thomas Bauer, Eric Hennes, Frans Mul, Martin Doets H.J. Bulten - Nikhef Annual meeting, Dec. 15, 2009

10 Upgrade Virgo+/advanced Virgo Nikhef (+VU) responsibilities Vacuum cryolinks Suspension 6 external + 2 internal benches IMC end mirror+dihedron Alignment system Phase camera 10 Alignment electronics Han Voet, Henk Groenstege, Tjeerd Ketel, Harry van der Graaf H.J. Bulten - Nikhef Annual meeting, Dec. 15, 2009 Scan wavefront. Phase camera: D. Rabeling

11 NIKHEF analysis LIGO/Virgo Inspirals – Chris van den Broeck, Tjonnie Li Signals from neutron stars in binary systems ( S. vd Putten, HJB ) High red-shift, previously not attempted Implemented on grid H.J. Bulten - Nikhef Annual meeting, Dec. 15, 200911 A noise =100 A signal A noise =250 A signal A noise =300 A signal

12 Status ET H.J. Bulten - Nikhef Annual meeting, Dec. 15, 200912 Design Study Proposal approved by EU within FP7 Large part of the European GW community involved EGO, INFN, MPI, CNRS, NIKHEF, Univ. Birmingham, Cardiff, Glasgow Recommended in Aspera / Appec roadmap WP-1 leader (JFJ van den Brand), site selection Newtonian-noise modeling (Eric Hennes, Mark Beker, David Rabeling) Seismic measurements (Jo van den Brand, Mark Beker, David Rabeling) Homestake, Gran Sasso, Kamioka Infrastructure granite clay E. HennesM.Doets

13 Scientific output LIGO/Virgo data taking/detector upgrade proceed according to schedule Next upgrade jan-june 2010 Joint science run until end 2010 Einstein telescope feasibility studies proceed as planned > 20 publications in 2009 Also > 10 conference contributions H.J. Bulten - Nikhef Annual meeting, Dec. 15, 200913 Nature, Aug 2009. Limits on gravitational waves from cosmic strings. The entire shown parameter space can be excluded by advanced LIGO/Virgo

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