R

1
RD on thermal noise in Europe the STREGA
Project

• Geppo CagnoliUniversity of Glasgow
• AMALDI 6 Okinawa - JapanJune 20-24 2005

2
Toward the 3rd generation detectors

• The 1st generation is taking data
• 20 Mpc NS-NS detection range
• The Big Leap Advanced Detectors
• Stretching room temperature technology to its
  very limit
• Impressive RD for Advanced LIGO
• 350 Mpc NS-NS detection range
• Advanced VIRGO proposal on its making
• MiniGRAIL, SFERA and DUAL advanced resonant
  detectors

3
Toward the 3rd generation detectors

• We have to secure the detection distance and
  potentially increase it with a further 10 times
  reduction of the detector noise
• Technology
• Low temperature is a promising direction for
  Interferometers
• SQL and ultra-cryogenic operation for resonant
  detectors
• LCGT (Large Cryogenic Gravitational
  Telescope) is a precursor
• Complementary to LISA and DECIGO

4
EGO the 3rd generation observatoryhttp//virgo-b
wulf.pg.infn.it/punturo/FP6/
From Kip Thorne
ADVANCED LIGO ADVANCED VIRGO
h
LCGT
Hz 1/2
1st generation limit
5
What STREGA is

• Study of Thermal noise Reduction for European
  Gravitational wAve detectors
• STREGA mission
• Lower thermal noise 10 times with respect to
  the second generation detectors
• STREGA coordinates the efforts that many labs
  in different projects spend on Thermal Noise
  Research

6
Institutions and Labs

• CNRS/ln2p3
• ESPCI (Paris), LKB (Paris), LMA (Lyon)
• INFN
• Firenze, Frascati, Genova, Legnaro, Napoli,
  Padova, Perugia, Pisa, Roma1, Roma2, Trento
• IFN
• Trento
• University of Leiden
• MiniGRAIL
• University of Glasgow
• IGR

7
Some numbers

• 120 scientists involved
• 1390 k total budget from EU
• Started 1st April 2004
• 5 years duration
• http//www.ego-gw.it/ILIAS-GW/

8
STREGA as part of a bigger Project
FrameworkProgram 6supports thedevelopmentof
the EuropeanResearch Area with 17.5 G 72 G
in FP7
STREGA (RD)
GWA (Networking)
9
The Content

• 3 Objectives Materials, Cryogenics, Th. Noise
  Selected topics

10
Silicon for substrates
Low T facilities for optical and mechanical loss
measurements are being assembled
11
Coatings
Advanced LIGO poster
Investigation on lossesof dielectric coatings
forDiffractive Optics
12
Materials for Resonators
5 cm
Optical transducer prototype
SiC cantilever blade
13
Cryogenics facility at EGO
14
Direct Th.Ns. Measurement Facility
15
Conclusions

• First of the 5 years is already concluded
• The coordination across labs of different
  projects is working well especially for
  Coatings, Suspensions and Cryogenics
• STREGA and GWA are open to new groups that
  want to participate in the project
• Full details in http//www.ego-gw.it/ILIAS-GW/