CSNII workshop - April, 06-07, 2009 1

ET Design Study ET is a “design study” supported by the

European Commission under the Framework Programme 7 (FP7)

It is a ~3 years project supported by EC with about 3 M€

It is started in May 2008 and will end in 2011

http://www.et-gw.eu/

CSNII workshop - April, 06-07, 2009 2

ET participants: ET design study team is composed by all the

major groups leading the experimental Gravitational wave search in Europe:

Participant no. Participant organization name Country

1 European Gravitational Observatory Italy-France

2 Istituto Nazionale di Fisica Nucleare Italy

3 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., acting through Max-

Planck-Institut für Gravitationsphysik

Germany

4 Centre National de la Recherche Scientifique France

5 University of Birmingham United Kingdom

6 University of Glasgow United Kingdom

7 NIKHEF The Netherlands

8 Cardiff University United Kingdom

Project Organization

Light project Really “conceptual”

4+1 working packages

M. Punturo - Corso FP7, LNF 11-12-2008 3

Project Coordinator

Scientific Coordinator

WP1 coordinator

Task responsible

Task responsible

WP2 coordinator

Task reponsible

Task responsible

WP3 coordinator

Task responsible

Task responsible

WP4 coordinator

Task responsible

Task responsible

J. Colas (EGO director)

M. Punturo (INFN)

H. Lück (MPG)

J.v.d. Brand (Nikhef)

F. Ricci (INFN)A. Freise (UNIBHAM)

B. Sathyaprakash (Cardiff)

Project Decision Information Flow True link between the GEO and Virgo collaborations Open, through the Science Team, to the world wide GW community

M. Punturo - Corso FP7, LNF 11-12-2008 4

Executive board

GoverningCouncil

Science Team

Institutions Scientific community

Project

Project Coordinator

Scientific Coordinator

WP coordinators

GEO,Virgo , ST representatives (1 + 1 + 1)

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Site and infrastructu

re

Thermal noise of

mirrors and suspensions / cryogenics

Optical configuratio

n

Astrophysics issues

Management

J. v.d. Brand F. Ricci A. Freise B. S. Sathyaprakash

ET Working Groups

J. ColasM. PunturoH. Lück

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Site and infrastructures

Issues:•Scientific•Security•Costs•Legal•…

Figure: M.Lorenzini

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Thermal Noise, Suspension, Cryogenics

Thermo-Optic Noise

CryogenicsCryo-Materials

Coatingless Mirrors

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Optical Configuration

Squeezed Light

Non-Gaussian beams

High power laser (1064nm, 1550nm)

9

WP4:ET science goals Since GW detection is expected to occur in the advanced detectors, the ET science

targets are mainly addressed to observational aspects: Astrophysics:

Measure in great detail the physical parameters of the stellar bodies composing the binary systems NS-NS, NS-BH, BH-BH Constrain the Equation of State of NS through the measurement

of the merging phase of BNS of the NS stellar modes of the gravitational continuous wave emitted by a pulsar NS

Contribute to solve the GRB enigma Relativity

Compare the numerical relativity model describing the coalescence of intermediate mass black holes

Cosmology Measure few cosmological parameters using the GW signal from BNS emitting also an e.m. signal

(like GRB) Probe the first instant of the universe and its evolution through the measurement of the GW

stochastic background Astro-particle:

Contribute to the measure the neutrino mass

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Science Team

The ET science team is linking the GW community in Europe (and beyond)

More than 110 physicists participated at the first ET general meeting (Nov.2008)

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Evolution of the GW detectors

ET is inserted in the evolution scheme of the GW detectors in the world

´06 ´07 ´08 ´09 ´10 ´11 ´12 ´13 ´14 ´15 ´16 ´17 ´18 ´19 ´20 ´21 ´22

Virgo

GEO

LIGO

LISA

E.T.

Virgo+

E-LIGO

Advanced Virgo

GEO HF

Advanced LIGO

DS PCP Construction Comm.

Hanford

Livingston

Launch Transfer data

data

1st Generation 2nd Generation 3rd Gen.

Site Prep.