E.T. Design StudyE.T. Design Study

Harald LückHarald Lück

1st generation2nd generation3rd generation

1 10 100 1000 1000010

-25

10-24

10-23

10-22

10-21

10-20

10-19

1st generation2nd generation3rd generation

1 10 100 1000 1000010

-25

10-24

10-23

10-22

10-21

10-20

10-19

3 main noise sources3 main noise sources

Thermal Noise

Seismic

Shot Noise

ET: Baseline ConceptUnderground location– Reduce seismic noise

– Reduce gravity gradient noise– Eases low frequency suspensions

Cryogenic

Overall beam tube length ~ 30km

Possibly Δ instead of L geometry

ConceptualConceptual Design Study Design Study Start Feb. / March 2008Start Feb. / March 2008

Working Packages:Working Packages:

11 Site and infrastructureSite and infrastructure22 Thermal noise of mirrors and Thermal noise of mirrors and suspensions / cryogenicssuspensions / cryogenics33 Optical configurationOptical configuration44 Astrophysics issuesAstrophysics issues55 ManagementManagement

Jo Van den Brand

P. Rapagnani

A. Freise

B. Sathyaprakash

M. Punturo

DS ManagementDS Management

Project Coordinator

Scientific Coordinator

WP1 coordinator

WP4 coordinator

WP3 coordinator

WP2 coordinator

Task responsible

Task responsible

Task reponsible

Task responsible

Task responsible

Task responsible

Task responsible

Task responsible

Secretary

Promote and verify scientific achievements

Administrative, financial, EU contact

Project Coordinator

5 WP coordinators

Scientific Coordinator

GEO and Virgo representatives

1 each

Science Team representative

Executive Board

The Governing Council

A Governing Council will be formed by the authorised representatives (one per institution) appointed by the participating contractors + scientific coordinator. Chair = Project Coordinator.Chair = Project Coordinator.

Participant no.

Participant organization name Country

1 European Gravitational Observatory Italy

2 Istituto Nazionale di Fisica Nucleare Italy

3 Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V., acting through Max-Planck-Institut fuer Gravitationsphysik

Germany

4 Centre National de la Recherche Scientifique France

5 University of Birmingham United Kingdom

6 University of Glasgow United Kingdom

7 Vereniging voor christelijk hoger onderwijs, wetenschappelijk onderzoek en patiëntenzorg

The Netherlands

8 University of Cardiff United Kingdom

Science TeamScience Team

Initially co-chaired byInitially co-chaired by– GEO spokesperson GEO spokesperson (Karsten Danzmann)(Karsten Danzmann)– Virgo spokesperson Virgo spokesperson (Benoit Mours)(Benoit Mours)– Virgo-EGO Scientific Forum (VESF) coordinator Virgo-EGO Scientific Forum (VESF) coordinator (Francesco (Francesco

Fidecaro)Fidecaro)

MembersMembers– Open to all members of GW community willing to contribute to Open to all members of GW community willing to contribute to

the DSthe DS– Initial members will be the coordinators of the research groups

participating in the project and the main scientists of the European gravitational wave community, indicated by the three co-chairpersons

Meetings:Meetings:– must meet at least once a year, during the annual project

plenary meeting

Results to be achieved within the Results to be achieved within the next three yearsnext three years

Site selection: scientific, operative, legal, Site selection: scientific, operative, legal, financial, administrativefinancial, administrativeSeismic isolation, suspension, substrates, Seismic isolation, suspension, substrates, coatings compatible with cryogenic coatings compatible with cryogenic operationoperationGeometry, topology, configuration of IFO Geometry, topology, configuration of IFO with sensitivity < SQL; high power effectswith sensitivity < SQL; high power effectsOptimize scientific output and define DA Optimize scientific output and define DA requirementsrequirements

Contract number: RII3-CT-2004-506222

Information flow inside the ProjectInformation flow inside the Project

Executive board

GoverningCouncil

Science Team

Institutions Scientific community

Project