Inspiral Group Report: S1 Preliminary Report

Inspiral Group Report: S1 Preliminary Report

A new family of flat-topped beams interesting for future LIGO interferometers Mihai Bondarescu California Institute of Technology April 24 2004 GR fun @ Cornell 1 Collaborators and Consultants

K. Thorne (Caltech) Pavlin Savov (Caltech) Erika DAmbrosio (Caltech) S. Vyatchanin (MSU, Moscow) S. Strigin (MSU, Moscow) R. OShaughnessy (NWU, Chicago) P. Kazarian (GCC) April 24 2004 GR fun @ Cornell

2 April 24 2004 GR fun @ Cornell 3 International Network of Interferometric Detectors Network Required for: Detection Confidence Waveform Extraction

Direction by Triangulation TAMA300 Tokyo LIGO Hanford, WA LIGO Livingston, LA April 24 2004 GR fun @ Cornell GEO600 Hanover Germany

VIRGO Pisa, Italy 4 Slide adapted from a talk by Kip LIGO Collaboration of ~350 scientists at ~30 institutions Hanford Washington 4 km April 24 2004

2 km GR fun @ Cornell 5 Slide adapted from a talk by Kip Livingston, Louisiana 4 km April 24 2004 GR fun @ Cornell

6 Slide adapted from a talk by Kip LIGOs International Partners GEO600, Hanover Germany [UK, Germany] VIRGO: Pisa, Italy [Italy/France] AIGO, Jin-Jin West Australia April 24 2004 TAMA300, Tokyo [Japan]

GR fun @ Cornell 7 Slide adapted from a talk by Kip How a LIGO Interferometer Works Fabry-Perot Cavity Beam Splitter April 24 2004 GR fun @ Cornell

Fabry-Perot Cavity 8 Slide adapted from a talk by Kip April 24 2004 GR fun @ Cornell Slide adapted from Rejean J Dupuis talk from 9 http://www.ligo.org/results/

Noise in LIGO Adopted from Kips Talk (LIGO-G030137-00-Z) April 24 2004 GR fun @ Cornell 10 What is Thermoelastic Noise and How to Reduce It? Random Thermal Fluctuations (~0.5 mm)

Hot Regions Expand; Cold Contract Beam Intensity Averages Over Mirror Surface Imperfect Averaging = Thermoelastic Noise Gaussian Beam April 24 2004 GR fun @ Cornell 11 Slide from a talk prepared by Pavlin Savov for PCGM

What is Thermoelastic Noise and How to Reduce It? Random Thermal Fluctuations (~0.5 mm) Hot Regions Expand; Cold Contract Beam Intensity Averages Over Mirror Surface Imperfect Averaging = Thermoelastic Noise April 24 2004 GR fun @ Cornell

Mesa Beam 12 Slide from a talk prepared by Pavlin Savov for PCGM Building a MESA beam Minimal Gaussian April 24 2004 GR fun @ Cornell 13

Building a MESA beam Minimal Gaussian April 24 2004 GR fun @ Cornell 14 Building a MESA beam Minimal Gaussian e April 24 2004 GR fun @ Cornell

x 2 + i (z+ corrrections) 15 Building a MESA beam Minimal Gaussians April 24 2004 GR fun @ Cornell 16 Building a MESA beam Mesa

April 24 2004 GR fun @ Cornell 17 Flat and Concentric Configurations (OShaugnessy, Thorne) April 24 2004 (Bondarescu, Kazarian,Savov) GR fun @ Cornell

18 Flat and Concentric Configurations (OShaugnessy, Thorne) April 24 2004 (Bondarescu, Kazarian,Savov) GR fun @ Cornell 19 My proposal

Mirror April 24 2004 GR fun @ Cornell Overlap minimal Gaussians centered on these lines 20 Mimimal Gausians axis

Whats different? Surfaces of constant phase April 24 2004 GR fun @ Cornell 21 Whats different? D Flat Mirrors

April 24 2004 GR fun @ Cornell Confocal Mirros 22 Mesa Beams Comparison April 24 2004 GR fun @ Cornell 23

Mexican-Hat Mirrors Corrections April 24 2004 GR fun @ Cornell 24 Tilt Instability Reduce Thermoelastic Noise Evaluate Tilt Instability for New Mirrors Shapes Compare to

Conventional Spherical Mirrors April 24 2004 Fabry-Perot Cavity GR fun @ Cornell 25 The Eigenvalue Problem ikL e = G L / 2 G 2 T 2 G L / 2 April 24 2004

GR fun @ Cornell 26 Mesa Beam Profiles April 24 2004 GR fun @ Cornell 27 Flat-Concentric MB Comparison Eigenstates Comparison

Eigenvalues Comparison m = (1) * c April 24 2004 GR fun @ Cornell 28

f Again Flat-Concentric Configurations Relation =e ( r )(1g ) U ( r )(1g *( r )) =e U

G=1-L/R m +1 c =(1) c =F ( *f )

* f (Yanbei Chen) April 24 2004 GR fun @ Cornell 29 Results and Conclusions Thermoelastic Noise (O,Shaughnessy, Strigin, Vyatchanin)

MH S Tilt Instability T (Mode Mixing) MH G

/ S =0.34 G / T =5.29 Nearly Flat Concentric Duality (in Progress) April 24 2004 GR fun @ Cornell 30

Recently Viewed Presentations

  • Why "Saving Trees" is ruining the forest

    Why "Saving Trees" is ruining the forest

    Improved wildlife habitat. All wildlife species have definitive requirements for sunlight, space, shelter, food, and water in order to do well. Allowing more sunlight to reach the forest floor, the food and shelter that furry woodland creatures depend upon can...
  • 1 About us  OpusING was founded in USA

    1 About us OpusING was founded in USA

    600 Superior Ave. EastFifth Third BuildingSuite 1300Cleveland, OH 44114. Directions: Google Map. Canada India. Toronto Offshore Development Center India 25 Sheppard AVE., West Suite 300 B- 87, First Floor Toronto, ON - M2N 6S6 Sector 60, Noida 201301 . Phone:...
  • Tires, Tubes & Services

    Tires, Tubes & Services

    1. States will contact contractors directly to begin the Participating Addendum process. 2. States may have submitted Intents to Participate during solicitation, this will provide the information for contractors to contact states interested in signing a Participating Addendum. 3.
  • Lean in Healthcare: Meeting the 2015 Challenge

    Lean in Healthcare: Meeting the 2015 Challenge

    Lean in Healthcare: Meeting the 2015 Challenge Dr. Timothy D. Hill, Ph.D., CLSSBB, PMP Lean Improvement Specialist, Bluewater Health President, Kyosei Canada International Lean Leader, The Leading Edge Group Invited Professor, Corporate Social Responsibility & International Economics King's University College...
  • -sh -ch -th -ss fresh rich class math

    -sh -ch -th -ss fresh rich class math

    -sh -ch -th -ss class rich math path fresh cash bath grass pass much moth miss such cloth boss toss wash with kiss rush push guess wish brush
  • MURI - Stanford University

    MURI - Stanford University

    • An overall phase develops proportional to area (topological phase), A desired phase shift of achieved with Lifetime-limited atomic linewidth: 3 MHz via Auger recombination Radiative lifetime: 2 ms via phonon assisted process Optimum regime for detuning is just off-resonance...
  • Auditory Verbal Therapy - Deaf Ed

    Auditory Verbal Therapy - Deaf Ed

    Auditory sandwich technique Present two choices Use the parent as a model Speech Goals & Activities Imitate consonants varying by manner with the same vowels ex: ssss vs tutu mmm vs bubu Microphone Basketball, bowling, soccer Balloon toss Marbles Make...
  • Molecular Biology of Gene Function - Santa Monica College

    Molecular Biology of Gene Function - Santa Monica College

    * A model operon INDUCIBLE Negative inducible operon Turned on repressor J. Monod Won the Nobel Prize in 1965 Z Y A O P I Lac Operon and Proposed Arrangement with control I gene Not technically part of the "operon"...