N5 – WP1:Status and perspectives

G.Losurdo – INFN Firenze/UrbinoH.Grote – AEI Hannover

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

ILIAS N5 – GWA network

• Objectives– Increase the level of EU coordination– Maximise return on large investments already made– Enhance the performance of existing detectors– Prepare the future of this discipline in Europe– Improve the exchange of infos on subjects of common

interest– Foster the development of common methodologies for joint

observations

• Working groups:– WG1: antenna commissioning and characterization– WG2: joint operations of antennas, network data analysis– WG3: a european strategy for future antennas

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

WG1

• Objectives

– To speed up the commissioning and the characterization of Virgo and GEO by means of a deeper collaboration between the two teams

– To develop common methods of characterization of interferometric GW detectors to be applied to Virgo and GEO

– To provide inputs for establishing priorities for short term improvements of the existing interferometric detectors on the base of the Virgo and GEO characterization

• Budget for travels: 30 keuro/year from 2004 to 2007

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

From the1st EB meeting minutes

• Main statement: “We must create a community that represents our activity…”

• About the meetings:– Members of WG1 must meet 4 times/year at the

experimental sites.– Meetings are open to all interested persons belonging to

the network. – They have to meet twice before August (to be confirmed

by the chairmen)

• Appointed people have access to the detectors data

• They have to identify what software tools are missing to perform their job

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

The group

S.HildH.Grote (co-chairman)H.LueckJ.Smith

M.BarsugliaA.FreiseP.La PennaG.Losurdo (co-chairman)

L.TaffarelloM.Visco

Not a closed group:we can invite other people involved in WG1 topics to partecipate

GEO600

Virgo

Bars

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

WG1: 4-years execution plan

MILESTONES DELIVERABLES

YEAR 1Working group set-upGEO/Virgo noise sources comparison

Annual report

YEAR 2

GEO/Virgo joint noise characterizationDevelopment of common characterization algorithms

Annual reportRecommandations report for short term improvements

YEAR 3

GEO/Virgo joint noise characterizationImplementation of common characterization algorithms

Annual report

YEAR 4GEO/Virgo joint noise characterization

Annual reportRecommandations report for short term improvements

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

1st year milestones

• Working group set up– 1st meeting: Cascina, July 2004– 2nd meeting: Hannover, September 2004– 3rd meeting: January, TBD

• Web page set up (meeting agendas, minutes and presentations available)

• GEO/Virgo noise sources comparison, work started:– Comparing detector subsystems– Comparing detector operation– Comparing tools for data analysis– Comparing noise characterization methods

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

WG1 first meetings goals

• Keep in touch, know each other

• Understand where we are and where we are going: talks on detector status

• Develop a common language: talks on single detector subsystems of commissioning topics, demos of detector operation

• Noise characterization: talks on noise analysis methods and on data tools

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

1st meeting agenda

July 7th

• Introduction (G.Losurdo)

• Status of the detectors– Geo (H.Lueck)– Virgo (A.Freise)– Bars (M.Visco,

L.Taffarello)

• Commissioning/SubsystemsLocking/Control

– Geo (H.Grote)– Virgo (M.Barsuglia)

July 8th

• Commissioning/Noise– Geo (J.Smith)– Virgo (P.La Penna)– Bars (M.Visco,

L.Taffarello)

• General discussion

Social lunch (with WG3)

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

2nd meeting agenda

September 23rd

• Commissioning progress– Geo (H.Lueck)– Virgo (P. La Penna)

• Commissioning/Subsystems– Virgo suspension

control (G.Losurdo)– GEO detector operation

(H.Grote)– GEO detector operation

demo on site (GEO team)

Social event: visit to the nearby animal farm

• Commissioning/NoiseData tools and

exchange– Geo (S.Hild)– Virgo (A.Freise)

September 24th

• Commissioning/NoiseNoise analysis

– Geo (J.Smith)– Bars (M.Visco)

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

First achievements

• All the appointed group members attended both meetings, other participants present (everybody happy to be there)

• The discussion has been very deep and partecipated, with plenty of questions

• People start understanding similarities/differences in the commissioning approaches

• There is a strong will of collaboration and a widely open attitude

• A first test of data exchange has been done…

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

GEO data read with Virgo dataDisplayA.Freise

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

Analogous Virgo channels: notice how different are the names…A.Freise

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

Open “problems”: GEO-Virgo asymmetries

• We must create a common “dictionary”/language

• At the moment the meaning of commissioning is different for the two groups:– Virgo is working for making the detector fully operative– GEO is in the phase of noise charaterization

Full locking of Virgo reduces the “gap”

• The Virgo commissioning group is larger and the organization is different

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

Actions for the next future

• Increase the frequency of the meetings (using video/audio-conference)

• Invite non-appointed people to give talks

• Participate to “commissioning meetings” of the two detectors: getting more involved into the commissioning life of the others

• Share progressively the noise puzzles, write common internal reports

• Exchange students for short periods

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

Noise ProjectionsJ.Smith’s talk, 1st meeting

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

Effect of the vacuum pump

Between 13h22 (UTC) and 14h40, all pumps are progressively switched off

At 13h59, IB pump switched off

ZOOM

Between 14h40 and 15h00, original conditions are restored

P.La Penna’s talk, 1st meeting

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

GAUSSIANITY GAUSSIANITY

EXPLORER NAUTILUS

1 day of data on July 2004

M.Visco’s talk, 1st meeting

ILIAS-GW N5 JRA – Paris, Nov 6th, 2004 G.Losurdo – INFN Firenze-Urbino

Conclusive remarks

• A group of people deeply involved in GW detector commissioning has been set up

• The group can be an open and permanent workshop for collaborative noise characterization in Virgo and GEO detectors

• There is a lot that we can learn from each other and there is an very good spirit of collaboration