Download 2. List of deliverables

1.2 Management Activity
N1 – Table 1a: Contribution of the involved contractors.
#
Name
Short name
1
Commissariat à
l’Energie Atomique,
Paris, France
2
Centre National de la
Recherche Scientifique,
Paris, France
CNRS
3
Istituto Nazionale di
Fisica Nucleare,
Frascati, Italy
INFN
Annual Report
CEA
Short description of specific roles in the consortium
N1:
N2:
N3:
TA1:
JRA1
N1:
N2
N3
N4:
N5:
N6:
TA1
JR1
JR2:
JR3: Optical mesurments on crystalline materials at room as at low temperature. Production of
dielectric coatings. Set up of high finesse cavity at low temperature.
N1:
N2:
N3:
N4:
N5:
N6:
TA1:
JR1:
JR2
JR3: Coordination of the activity. Q measurements on thin silicon fibres and on membranes with and
without dielectric coatings applied, Mo and SiC cantilever blades, at room as at low temperature. Set
up of seamless copper RF superconducting cavities. Measurements of the acoustic effect generated
by particle absorption on metals across the superconducting transition. Design of the low
temperature seismic suspension system and of the lower stage elements. Modification of cryogenic
1
Contract [RII3-CT-2004-506222]t
#
Name
Short name
Short description of specific roles in the consortium
facilities and construction of dedicated sensors. Construction and testing of resonators. Construction
of optical readout systems and design of large area detector readouts.
N3:
N4:
9
Max-Planck Society for
the advancement of
Science, represented by
Max-Planck-Institute for
Nuclear Physics,
Heidelberg, Germany
N5:
MPIK
N6:
JRA1
JRA2:
JRA3: Coordination of the activity
N5:
Istituto di Fotonica e
13 Nanotecnologie-CNRSezione di Trento, Italy
IFN
European Gravitational
14 Observatory, Cascina,
Italy
EGO
JRA3: Realisation of a vacuum chamber with a micropositioning system for studying the effect of
the conditioning, thermal, and machining procedure of the electrodes on the breakdown field.
N1:
N5:
N4:
Leiden University –
15 LION Institute of
Physics, Netherlands
MiniGRAIL
University of Glasgow,
19 United
Kingdom
U.Glasgow
N5:
JRA2:
JRA3: Vacuum-annealing of the 1.4 ton sphere; Develpment of two-stage SQUIDS; Construction of
CuAl resonators and testing on spherical resonator (tasks M2 and C2)
N1: Membership of EB
N5: Participation to WG2 and WG3
JRA3: Coordination of the activity. Upgrade of cryogenic set-up for Q measurements of large
silicon cylinders (M1); set-up of the measuring cavity of the 10m interferometer for the direct
thermal noise measurement (T1); upgrade of the Q measurement facility at room temperature for the
Annual Report
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Contract [RII3-CT-2004-506222]
#
Name
Short name
Short description of specific roles in the consortium
investigation on coatings (M4)
N1 – Table 2a: Contribution of the involved institutions, not signatories to the Contract.
Institution
Friedrich-Schiller University, Germany
contribution
JRA3: Q measurements at low temperature, tasks M1, M4
and M5
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Contract [RII3-CT-2004-506222]
1.5.3 JRA3: Study on Thermal Noise Reduction in Gravitational Wave Detectors
Coordinator: G. Cagnoli (University of Glasgow)
Deputy Coordinator: K. Danzmann (MPI/Hannover)
The scientific activities in JRA3 (STREGA) aim to the developments of materials, methods
and technologies that will reduce the thermal noise level in gravitational wave detectors of 3rd
generation by a considerable amount (10 times with respect to the noise level of 2nd generation
detectors).
The most promising technological solutions that will allow such improvement in the detectors
performance are: cryogenic operation for interferometers; quantum limited readout systems
and new materials for acoustic detectors. The implications of these new development lines are
several; consequently this JRA has been organized in three main objectives:
M) Materials for Advanced Detectors;
C) Cryogenics for Advanced Detectors;
T) Thermal noise specific studies.
All the three objectives are relevant for all the different types of detectors.
In more details, a list of items related to each objective follows.
Materials for Advanced Detectors. Silicon seems so far the most promising material for
cryogenic interferometer; suitable silicon suspensions and low loss coatings have to be
developed. For acoustic detectors new materials are CuAl, SiC and Mo for main test masses
and transducers; high coupling and low loss capacitor for capacitive readouts; coatings for
optical readouts. Superconducting radio-frequency cavities and an investigation on acoustic
effect generated by cosmic rays complete the objective.
Cryogenics for Advanced Detectors. The feasibility study of low noise cryogenic
suspensions with sufficient high level of heat extraction is fundamental for future
interferometers. At the same time quantum limited acoustic detectors need to operate at ultra
low temperature (tens of mK) and an investigation on this front, concerning the MiniGRAIL
detector, complete the objective.
Thermal noise specific studies. The development of facilities for direct measurement of
thermal noise is one of the tasks of this objective. Another phenomenon under investigation is
the photo-thermal effect. Finally, a study of thermal noise reduction in future resonant
detectors using large area readout systems is conducted.
JRA3 – Table 1a: Participating institutes.
Participant
number
Participant short
name
Person-months
2
3
13
15
19
CNRS
INFN
IFN
MiniGRAIL
U.Glasgow
22
184 (24)
8
12
22
Total
248(24)
JRA3 – Table 1b: Other entities foreseen to contribute to the project (but are not signatories to the
Contract).
Name of Istitution
City
Country
Friedrich-Schiller University
Jena
Germany
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Contract [RII3-CT-2004-506222]t
Deliverable/
Milestone No
m1
m2
d1
Deliverable/Milestone Name
JR3– Table 2: Deliverables.
Workpackage
/Task No
- Large cryostat in Glasgow operative, first Q
measurement
- Cryogenic low-absorption measurements
facility in Paris operative
d3
d4
- Report on the transducers test
m5
- First seamless copper cavity
- Measurement of the critical temperature of
the Niobium sputtered samples
- Construction Drawings for a prototype cavity
- Application of first coatings to silicon
substrates
- Report on results of the investigation of
losses of substrates
- Production of a silicon fibre with constant
crystalline axis orientation
- Local cooling by Total Internal Reflection on
a BaY2F8 crystal doped with Yb3+
- Report on room temperature measurements
of thermal and mechanical properties of fibres
produced by the collaboration
- Report on the effect estimation of local
cooling of a fibre on its level of thermal noise
- Installation of the dilution refrigerator in the
Frascati facility
- Acoustic emission detector for Nb bar ready
for taking measurements
- Report on low T measurements on Al using
an electron particle beam
- Installation of the Sumitomo PTR
- First cooling of the VFC
- Drawings of the first payload prototype
- Report on VFC thermal behaviour
- Cool down MiniGRAIL to below 50 mK
with more than 3 transducers
- Measure the noise temperature of the sphere
at T<50 mK and acquire data in coincidence
with other antennas
- Further improvement of 2-stage DC-DROS
SQUIDs and noise optimization
- Report on noise measurements below 50 mK
with 3 transducers
- Report on nearly quantum-limited SQUIDs
- Production of high-compliance very high
m3
m4
m6
d5
m7
d6
m8
m9
d7
d8
m10
M11
D9
M12
M13
D10
D11
M14
M15
M16
D12
D13
M17
WP1 / M2
WP1 / M3
WP1 / M4
Planned
Achieved
24
271
18
18
24
24
24
24
INFN (3)
24
24
Leiden (15)
22
22
INFN (3)
INFN (3)
Leiden (15)
INFN (3)
24
24
24
24
24
18
INFN (3)
30
212
INFN (3)
24
24
Glasgow (19)
30
24
Glasgow (19)
INFN (3)
24
24
INFN (3)
24
303
INFN (3)
24
24
INFN (3)
24
24
INFN (3)
24
24
INFN (3)
18
244
INFN (3)
18
155
INFN (3)
24
24
INFN (3)
INFN (3)
INFN (3)
INFN (3)
15
15
18
24
15
15
18
24
Leiden (15)
24
306
Leiden (15)
24
30
Leiden (15)
24
24
Leiden (15)
24
24
Leiden (15)
INFN (3)
24
24
24
24
CNRS(2)
WP1 / M1
- Silicate bonding samples ready for testing
- Report on the investigation plan of the effect
of doping in Si
- Measurement of field emission current in
small capacitors
- Test of resonant capacitive transducers on a
resonant sphere
- Report on Q measurement at low T
d2
Lead
Contractor(s),
other
participants
CNRS (2)
Glasgow (19)
CNRS (2)
Glasgow (19)
CNRS (2)
Glasgow (19)
WP1 / M5
WP1 / M6
WP2 / C1
WP2 / C2
WP2 / C3
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Contract [RII3-CT-2004-506222]
M18
D14
M19
M20
D15
thermal conductivity suspensions
- Production and assembly of the cryo-facility
cryostat
- Drawings of all the elements of the
suspension chain
- Installation of the silica suspension
- Locking of the laser on the stabilization
cavity in the Perugia facility
- Frequency stabilization of the master and
slave lasers in the IGR interferometer
optimized
- Measurement of photoelastic noise with short
cavities (small waist)
- Installation of a high-finesse cavity in a
cryostat
INFN (3)
30
30
INFN (3)
24
24
Glasgow (19)
24
307
Glasgow (19)
24
24
Glasgow (19)
24
24
24
24
24
24
24
24
24
24
27
308
24
24
24
24
WP3 / T1
CNRS (2)
INFN (3)
CNRS (2)
M22
WP3 / T2
INFN (3)
CNRS (2)
D16
- Technical report
INFN (3)
IFN (13)
M23
- Construction of a Folded Fabry-Perot cavity
INFN (3)
- Construction and optical test of a concaveIFN (13)
M24
convex cavity
INFN (3)
- Development of a mechanical amplifier with WP3 / T3
IFN (13)
M25
negligible thermal noise
INFN (3)
IFN (13)
D17
- Conceptual design of a DUAL detector
INFN (3)
CNRS (2)
Numbers on the delayed milestones are explained and referred to specific points in the section Major
achievements in the second 12 months
M21
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Contract [RII3-CT-2004-506222]
JR3– Table 3: Meetings in the reporting period.
Date
28/04/2005
Title/subject of meeting
/workshop
C1-C3 Meeting
Location
Cascina
Number of
attendees
5
Website address
http://www.egogw.it/ILIASGW/STREGAmeetings
.html
http://www.egogw.it/ILIAS-GW/
24-25/10/05
ILIAS – GW General
Meeting
Palma de
Mallorca,
Spain
56
17/02/2006
Silicon collaboration
start up meeting
Phone
conference
10
http://www.aei.mpg.de/
~sintes/ILIAS/
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Contract [RII3-CT-2004-506222]
JR3– Table 4 : Role of participant contractors
Deliverable
No
d1
d2
d3
Deliverable Name
Workpackage
/Task No
Contractors
- Silicate bonding samples ready for testing
- Report on the investigation plan of the effect
of doping in Si
WP1/M1
CNRS (2)
INFN (3)
Glasgow (19)
- Report on Q measurements at low T
d4
- Report on the transducers test
d5
- Construction Drawings for a prototype cavity
d6
- Report on results of the investigation of
losses of substrates
d7
- Report on room temperature measurements
of thermal and mechanical properties of fibres
produced by the collaboration
WP1/M2
INFN (3)
Leiden (15)
WP1/M3
INFN (3)
WP1/M4
- Report on the effect estimation of local
cooling of a fibre on its level of thermal noise
d9
- Report on low T measurements on Al using
an electron particle beam
Annual Report
(2): Task coordination
(19): Fabrication of silicate bonds
(2): Task coordination
(19): Purchase of samples.
Fabrication of mechanical
parts.
Writing of the report
(3): Task coordinator
Purchase of samples
Running of the cryostat
Writing of the report
(3): Task coordination
(15): Fabrication of samples
Running of the cryostat
(3): Task coordination
Construction of the detector
prototype
(19): Task coordination
Writing of the report
Purchasing and fabrication of
samples
(2): Deposition of coatings
(3): Task coordination
Production of samples
Writing of the report
WP1/M5
d8
Glasgow (19)
INFN (3)
CNRS (2)
Role in the deliverable
WP1/M6
8
INFN (3)
Glasgow (19)
INFN (3)
(3): Task coordination
Production of samples
Writing of the report
(3): Task coordination
Running of the cryostat
Running of the accelerator
Writing of the report
Contract [RII3-CT-2004-506222]t
Role in the task
(in addition to the column at left)
(3): Partecipation to the STREGA
and ILIAS General Meetings
(19): Partecipation to the STREGA
and ILIAS General Meetings
(3): Partecipation to the STREGA
and ILIAS General Meetings
(15): Partecipation to the STREGA
and ILIAS General Meetings
(3): Partecipation to the STREGA
and ILIAS General Meetings
(3): Mechanical and electronic
upgrade of the cryostat
Partecipation to the STREGA
and ILIAS General Meetings
(19): Partecipation to the STREGA
and ILIAS General Meetings
(19): Mechanical and electronic
upgrade of the cryostat
Partecipation to the STREGA
and ILIAS General Meetings
(3): Mechanical, electronic and
optical parts for thermal
conduction and expansion
measurements
Partecipation to the STREGA
and ILIAS General Meetings
(3): Partecipation to the STREGA
and ILIAS General Meetings
d10
- Drawings of the first payload prototype
WP2/C1
d11
- Report on VFC thermal behaviour
d12
- Report on noise measurements below 50 mK
with 3 transducers
WP2/C2
d13
- Report on nearly quantum-limited SQUIDs
d14
- Drawings of all the elements of the
suspension chain
d15
- Frequency stabilization of the master and
slave lasers in the IGR interferometer
optimized
INFN (3)
Leiden (15)
(3): Task coordination
Drawing of the First Payload
Production of mechanical parts
Small scale prototype produced
(3): Task coordination
Set up of the whole feed-back
system
Writing of the report
(15): Task coordination
Running of the cryostat
Production of the 3 transducers
Writing of the report
(15): Task coordination
Running of the cryostat
Production of the SQUIDs
Writing of the report
WP2/C3
INFN (3)
(3): Task coordination
Production of the Drawings
Writing of the report
WP3/T1
Glasgow (19)
INFN (3)
(19): Task coordination
Purchasing and production of
electronic components
Writing of the report
d16
- Technical report
WP3/T2
CNRS (2)
INFN (3)
d17
- Conceptual design of a DUAL detector
WP3/T3
IFN (13)
INFN (3)
CNRS (2)
(2): Task coordination
Purcahsing of electronic,
mechanical and optical
components
Writing of the report
(3): Purcahsing of electronic,
mechanical and optical
components
Post doc salary
Writing of the report
(13): Task coordination
Simulation
Writing of the report
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Contract [RII3-CT-2004-506222]
(3): Partecipation to the STREGA
and ILIAS General Meetings
(15): Partecipation to the STREGA
and ILIAS General Meetings
(3): Mecanical parts for the upgrade
of the large cryostat.
Partecipation to the STREGA
and ILIAS General Meetings
(19): Production of silica fibres
Partecipation to the STREGA
General Meetings
(3): Mechanical, electronic and
optical parts interferometer
upgrades
Partecipation to the STREGA
and ILIAS General Meetings
(3): Partecipation to the STREGA
and ILIAS General Meetings
(3): Components for the folded
Fabry-Perot cavity and Post doc
salary
(2): Simulation
(3): Simulation
Writing of the report
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Contract [RII3-CT-2004-506222]
Partecipation to the STREGA
and ILIAS General Meetings
(13): Partecipation to the STREGA
and ILIAS General Meetings
Major achievements in the second 12 months
A short presentation of the most relevant events and facts occurred in the reporting period is
shown here.
Materials for Advanced Detectors
A new group from Jena has joint the STREGA collaboration in October 2005. Their expertise
is on cryogenic Q measurements.
Silicon is the most promising material for cryogenic interferometers and several groups have
been equipped with cryogenic setups for optical and mechanical measurements of this
material. 1At this moment none of the experimental setups devoted to the Q measurements are
free of systematic errors, introduced by the suspension or clamping systems used for the
samples. The challenge taken by these laboratories is high because only few examples of these
measurements can be found in literature and the difficulty on reproducing the data is holding
back some of the expected development of the scientific activities in STREGA.
In order to use at best the facilities in the different laboratories a Silicon Collaboration Group
has been formed at the second yearly meeting of STREGA. The 7 participating groups
(Florence, Glasgow, Jena, Legnaro, Perugia, Pisa, Roma1) agreed on planning a coordinate
scientific activity around the following research topics: i) crystal orientation effect; ii) doping
effect; iii) surface effect; iv) coating and diffraction gratings; v) bonding techniques; vi) full
scale prototype (presentation of G.Cagnoli at http://www.ego-gw.it/ILIAS-GW/ILIAS-GWMallorca_Agenda_v2.html).
Optical losses in silicon crystals are so low to be very close to the detection limit imposed by
the shot noise of photons. An upgrade of the facility is being made.
Samples of dielectric coatings on silicon substrates and silica-bonded silicon pieces have been
produced.
3The facility for the production of silicon fibres has to be optimized because the produced
samples have not yet the crystal orientation constant. The preparation of the seed seems to be
the solution. The activity had an unexpected problem: it has been found that the samples
produced so far were contaminated by the crucible. The activity is continuing.
It has been demonstrated the inverse fluorescence in the crystal suitable to be used in the
suspensions but the cooling rate is too low to be used in future detectors.
First Q measurements at low temperature of SiC cantilever blades. The Q is quite low
presumably because of the sintered nature of the sample. More compact structure samples are
now being tested.
The electron beam welding did not produce good results on mechanical losses as expected. Q
measurements on a hollow sphere showed that a thin layer of brazing material produces very
encouraging results.
The effort of developing an optical readout for acoustic detectors was divided so far on the
development of two setups: one dedicated to the AURIGA detector (a future upgrade) and the
other developed for DUAL (folded Fabry-Perot and Convex-Concave cavity). Since the
AURIGA detector will be operative for several years in the present status, the STREGA
collaboration has decided to spend all the efforts for the R&D of DUAL.
2The superconducting radio-frequency, niobium-sputtered, seamless copper cavities have been
successfully produced and tested and due to an unexpected fast delivering by the companies
involved in the production of parts, the activities of this year have been completed in advance.
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Contract [RII3-CT-2004-506222]
4The
detection of particles-induced acoustic-emission in a superconducting aluminium bar has
been delayed due to the unexpected long leading time of the dilution refrigerator. 5The facility
in Frascati was used to complete earlier than expected the investigation on Niobium.
Cryogenics for Advanced Detectors
The Vibration Free Cryocooler has been successfully realized and tested and this represents a
significant achievement for a future cryogenic interferometer: this first prototype achieves
already a very good level of vibration extinction.
A small prototype (scale 1:3.5) of last stage suspension made of silicon has been designed and
all its components constructed.
The large cryostat at EGO has been mounted and positively tested. The designing of the
cryogenic superattenuator has already started. After the designing of the first suspension
elements done this year, it has been understood that the production of a full cryogenic
superattenuator is not necessary because the single elements of the suspension chain can be
tested in the large cryogenic facility already mounted at EGO. The final deliverable at the end
of the project is going to be a Design of the full cryogenic superattenuator rather than the
production of it.
6The MiniGRAIL spherical resonant detector has achieved a temperature of 60 mK. Although
a not yet identified problem on the dilution refrigerator did not allow reaching the temperature
of 50 mK, several successful tests on the transducer chain have been done.
Thermal noise specific studies
7The upgrade of the Glasgow interferometer is going on with a slight delay due to unexpected
fault of the laser that had to be replaced. The laser replacement had a consequence on the
optics also since the matching of the new laser beam to the old cavity had to be done again.
A smaller spot size has been obtained in the photo-thermal effect facility in Florence whereas
the low-temperature high-finesse cavity assembled in Paris has shown the first resonances.
The theoretical study of the performance of the DUAL detector has been concluded and
presented here.
8The convex-concave cavity activity is being extended for few moths further in the third year.
The same group has devoted more effort than expected in the successful construction of the
first folded Fabry-Perot cavity.
Glossary
1st Generation Detectors.
Current generation of detectors: aluminium bars for resonators and
interferometers at room temperatures with metal suspensions.
nd
2 Generation Detectors. Known as Advanced Detectors: mK operational temperature for
resonator, quantum limited; room temperature interferometers with monolithic silica
suspensions, high power lasers and signal recycling.
3rd Generation Detectors. These are the cryogenic underground interferometers using squeezed
light.
Fabry-Perot cavity. Optical cavity made of a full reflecting mirror and a partially
transmitting/reflecting one, facing each other. From the latter the light is injected and if
the length of the cavity is an integer number of half wavelengths and the curvature of the
mirrors is appropriate, the light can resonate in a TEoo Gaussian mode.
Last stage. It is the lower stage of the suspension in an interferometer. It consists of the mirror,
its suspension fibres and the upper stage.
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Contract [RII3-CT-2004-506222]
Locking.
It is an active control of the frequency of the laser or the position of the mirror/s of an
interferometer in order to achieve a desired condition. In most of the cases presented in
this report, this condition corresponds to the resonant of the cavities.
Marionetta. It is the stage immediately above the mirror in an interferometric Gravitational
Wave Detector. It has electromechanical actuators for the steering of the mirror.
Monolithic suspension. They are achieved when the suspension fibres are of the same material of
the mirror and of the marionette.
Q measurements. For Q is meant Quality Factor of the resonance. The sample is excited in one
of its modes (generally mechanical modes) and the decay of free oscillation is recorded.
The Q is worked out from the characteristic decay time . The Q quantify the losses.
Superattenuator. It is the chain of passive mechanical filters (harmonic oscillators) whose aim
is to suspend the mirror and isolate it from the seismic motion that is 10 orders of
magnitude larger than the expected effect of gravitational waves.
Test mass. It is the mass sensing the gravitational wave. For resonator is the main mass; for RF
detectors is the superconducting cavity; for interferometers is each mirror of the FabryPerot cavities.
Annual Report
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Contract [RII3-CT-2004-506222]
2. List of deliverables
Activity
Deliverable
(NAx; JRAy) No
1
2
3
4
5
6
7
8
JRA3
9
10
11
12
13
14
15
Deliverable Name
Silicate bonding samples
ready for testing
Report on the
investigation of the effect
of doping in Si
Report on Q
measurement at low T
Report on the transducers
test
Construction Drawing for
a prototype cavity
Technical report
Report on room
temperature
measurement of thermal
and mechanical
properties of fibres
produced by the
collaboration
Report on the effect
estimation of local
cooling of a fibre on its
level of thermal noise
Report on low
temperature
measurement on Al using
an electron particle beam
Drawings of of the first
cryo payload prototype
Report on VFC thermal
behaviour
Report on noise
measurements below 50
mK with 3 transducers
Report on nearly
quantum-limited
SQUIDs
Drawings of all the
elements of the
suspension chain
Report on the new
frequency stabilization
system for the IGR
interferometer
Workpackage
/Task No
Delivered
by
Contractor(s)
Planned
(in
months)
Achieved
(in months)
CNRS (2)
Glasgow (19)
24
24
CNRS (2)
Glasgow (19)
24
24
INFN (3)
24
24
INFN (3)
24
24
WP1 / M3
INFN (3)
24
24
WP1 / M4
Glasgow (19)
INFN (3)
24
24
INFN (3)
24
24
INFN (3)
24
24
INFN (3)
24
24
INFN (3)
18
18
INFN (3)
24
24
Leiden (15)
24
24
Leiden (15)
24
24
WP2 / C3
INFN (3)
24
24
WP3 / T1
Glasgow (19)
24
24
24
24
24
24
WP1 / M1
WP1 / M2
WP1 / M5
WP1 / M6
WP2 / C1
WP2 / C2
16
Technical report
WP3 / T2
17
Conceptual design of a
DUAL detector
WP3 / T3
CNRS (2)
INFN (3)
IFN (13)
INFN (3)
CNRS (2)
Annual Report
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Contract [RII3-CT-2004-506222]
Annexes
Annex 5 – List of Publications
Gravitational Waves
STREGA
M. Bassan et al.,
First results of the RAP experiment (acoustic detection of particles) in the low temperature
regime.
J. Phys.: Conf. Ser. 32, (8), 393-7 (2006)
G. Cagnoli,
R&D on thermal noise in Europe: the STREGA Project.
J. Phys.: Conf. Ser. 32, (8), 294-300 (2006)
M. Alshourbagy et al.,
Measurements of thermoelastic properties of crystalline Si fibres.
Class. Quantum Grav. 23, (8), S277-85 (2006)
F. Marino, M. De Rosa, and F. Marin,
Canard orbits in Fabry-Perot cavities induced by radiation pressure and photothermal effects
Physical Review E 73, 026217 (2006)
M. De Rosa, F. Marin, F. Marino, O. Arcizet, A. Heidmann, M. Pinard,
Experimental investigation of dynamic photo-thermal effect
Class. Quantum Grav. 23, (8), S259-66 (2006)
S. Reid, G. Cagnoli, D. R. M. Crooks, J. Hough, P. Murray, S. Rowan, M. M. Fejer, R. Route and
S. Zappe,
Mechanical Dissipation in Silicon Flexures.
Physics Letters A 351 (2006) 205-21
Gravitational Waves
GWA
A.Stavirids, K.D. Kokkotas,
Evolution equations for slowly relativistic stars
Int.J.Modern.Physics D 14, 543-571 (2005).
E. Berti and K.D.Kokkotas,
Quasinormal modes of the Kerr-Newman black hole: Coupling of electromagnetic and
gravitational perturbations.
Physical Review D 71, 124008 (2005)
H.Sotani and K.D.Kokkotas,
Stellar Oscillations in Scalar-Tensor Theory of Gravity.
Physical Review D 71, 124038 (2005).
K.D.Kokkotas, N.Stergioulas,
Annual Report
15
Contract [RII3-CT-2004-506222]
Gravitational Waves from Compact Sources
Proceedings of 5th International Workshop “New Worlds in Astroparticle Physics”, World Scientific
(2005)
B.Zink, N.Stergioulas, I.Hawke, C.D.Ott, E.Schnetter, E.Müller,
Black hole formation through fragmantation of toroidal poltropes
gr-qc/0501080.
L.Baiotti, I.Hawke, P.J.Montero, F.Loffer, L.Rezzolla, N.Stergioulas, J.A.Font, E.Seidel
Three-dimensional relativistic simulations of rotating neutro nstar collapse to a Kerr Black hole
Phys.Rev.D 71, 024035 (2005).
I.Hawke, F.Loffler, A.Nerozzi,
Excision methods for high resolution schock capturing schemes applied to general relativistic
hydridynamics
Phys.Rev.D 71, 104006 (2005).
B.Giacomazzo, L.Rezzolla,
The exact solution of the Riemann problem in relativistic MHD
gr-qc/0507102.
J.D.Schnittman, L.Rezzolla,
Quasi-periodic oscillations in the x-ray light curves from relativistic tori
astro-ph/0506702.
A.Buonanno, G.Sigl, G.G.Raffelt, H.-Th.Janka, E.Müller,
Stochastic gravitational-wave background from cosmological supernovae
Phys. Rev. D 72, 084001 (2005).
Conferences
Annual Report
16
Contract [RII3-CT-2004-506222]