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Status of LIGO. Upper limits on known pulsar ellipticities. Barry Barish PAC Meeting Caltech 3-June-04. Goals and Priorities. Interferometer performance Integrate commissioning and data taking consistent with obtaining one year of integrated data at h = 10 -21 by end of 2006

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status of ligo

Statusof LIGO

Upper limits on known

pulsar ellipticities

Barry Barish

PAC Meeting

Caltech

3-June-04

goals and priorities
Goals and Priorities
  • Interferometer performance
    • Integrate commissioning and data taking consistent with obtaining one year of integrated data at h = 10-21 by end of 2006
  • Physics results from LIGO I
    • Initial upper limit results by early 2003
    • First search results in 2005
    • Reach LIGO I goals by 2007
  • Advanced LIGO
    • Prepare advanced LIGO proposal this fall
    • International collaboration and broad LSC participation
    • Advanced LIGO installation beginning by 2007

PAC Mtg -- Caltech

slide3

LIGO Sensitivity Evolution

Hanford 4km Interferometer

Dec 01

Nov 03

PAC Mtg -- Caltech

slide4

Best Performance to Date ….

Range ~ 6 Mpc

PAC Mtg -- Caltech

goals and priorities1
Goals and Priorities
  • Interferometer performance
    • Integrate commissioning and data taking consistent with obtaining one year of integrated data at h = 10-21 by end of 2006
  • Physics results from LIGO I
    • Initial upper limit results by early 2003
    • First search results in 2004
    • Reach LIGO I goals by 2007
  • Advanced LIGO
    • Prepare advanced LIGO proposal this fall
    • International collaboration and broad LSC participation
    • Advanced LIGO installation beginning by 2007

PAC Mtg -- Caltech

sensitivity during s1
Sensitivity during S1
  • LIGO S1 Run
  • ----------
  • “First
  • Upper Limit
  • Run”
  • 23 Aug–9 Sept 2002
  • 17 days
  • All interferometers

in power recycling

configuration

LHO 2Km

LHO 4Km

LLO 4Km

GEO

data exchange

for S1 RUN

PAC Mtg -- Caltech

s1 methodology papers
S1 “Methodology” Papers
  • Detector Paper
    • “Detector Description and Performance for the First Coincidence Observations between LIGO and GEO”
  • Periodic Sources
    • “Setting upper limits on the strength of periodic gravitational waves using the first science data from the GEO600 and LIGO detectors”
  • Inspiral Sources
    • “Analysis of LIGO data for gravitational waves from binary neutron stars”
  • Stochastic Sources
    • “Analysis of First LIGO Science Data for Stochastic Gravitational Waves”
  • Burst Sources
    • “First upper limits on gravitational wave bursts from LIGO”

PAC Mtg -- Caltech

slide9

LIGO Sensitivity -- L1

S1

May 01

First Science

Run

17 days - Sept 02

Jan 03

S2

Second Science

Run

59 days - April 03

PAC Mtg -- Caltech

science runs
Science Runs

A Measure of

Progress

Milky Way

Virgo Cluster

Andromeda

NN Binary

Inspiral Range

E8 ~ 5 kpc

S1 ~ 100 kpc

S2 ~ 0.9Mpc

S3 ~ 3 Mpc

Design~ 18 Mpc

PAC Mtg -- Caltech

post s3 at llo active external seismic
Post S3 at LLOactive external seismic

External Pre-Isolators

BSC

HAM

PAC Mtg -- Caltech

advanced ligo proposed in early 2003
Advanced LIGOproposed in early 2003

Multiple Suspensions

Active Seismic

Sapphire Optics

Higher Power Laser

PAC Mtg -- Caltech

slide13

AdLIGO Status as a Project

  • Large Projects at NSF are funded through MREF account (projects with total cost of more than ~10% of the annual division budget)
  • A long list of possible MREF projects (23) are under discussion by all the directorates and the list changes with time.
  • A shorter list of reviewed projects (11) are discussed annually with the NSB annually (a more stable list, but not prioritized)
  • The Assistant Directors advise the Directorate (who decides) what and when to bring projects forward to NSB for consideration and approval
  • Next big step is to obtain NSB approval and then inclusion in future MREF budgets to OMB (FY06?)

LIGO

PAC Mtg -- Caltech

ligo outreach program

LIGO Outreach Program

$5M for 5 years

LSC Collaborating Groups are invited to participate in the LIGO Laboratory Outreach Activities

ligo outreach collaboration
LIGO Outreach Collaboration
  • LIGO provides the science and facilities
  • Exploratorium exhibits the science
  • Southern University brings LIGO science to science education
  • Louisiana Board of Regents extends our program through public education

PAC Mtg -- Caltech

site plan
Site Plan

BUS & CAR PARKING

staging lot

LVEA

OSB

Existing unpaved site adjacent to LLO conference facility & temporary exhibit space

Erect new building with direct access to auditorium foyer

OUTREACHCENTER

PAC Mtg -- Caltech

conclusions
Conclusions
  • S1 Analysis Complete. Five Papers approved for publication.
  • S2 Data Run was ~x10 better sensitivity and ~x4 more running time. Data analysis is near complete and we plan to present the results at GR-17 in Dublin in July. LSC Data Analysis Meeting this weekend
  • S3 Data Run: Three interferometers with extragalactic sensitivity. Analysis not yet underway
  • LIGO is shutdown to install L1 seismic mitigation
  • Advanced LIGO was proposed in Jan 03 and was well reviewed. It is now awaiting approval by the NSB.
  • Short term goals:
    • Commission Seismic Retrofit
    • Improve sensitivity and reliability to near design and initiate the extended LIGO I search run.

PAC Mtg -- Caltech

this meeting
This Meeting
  • Review the Status of the LIGO Data Analysis, including new results
  • Review Status of Commissioning and Seismic Retrofit
  • Discussion and Advice on Possible LIGO Laboratory Management Structural Changes

PAC Mtg -- Caltech

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