ANSYS simulation of LIGO ITM

Slides:

Advertisements

Similar presentations

Acoustic-Structural Interaction in a Tuning Fork

Advertisements

ILIAS 5-6/11/2004 WG T2 Task T2 (WG 11) AIM: exact definition (theoretical and experimental) of photo-thermal noise PARTICIPANTS INFN (AURIGA group; also.

Thermal Stresses Jake Blanchard Spring Temp. Dependent Properties For most materials, k is a function of temperature This makes conduction equation.

1 Design of Gridded-Tube Structures for the 805 MHz RF Cavity Department of Mechanical, Materials, and Aerospace Engineering M. Alsharoa (PhD candidate)

Finite wall wake function Motivation: Study of multi-bunch instability in damping rings. Wake field perturbs Trailing bunches OCS6 damping ring DCO2 damping.

Large sapphire substrate absorption measurements for LIGO S.M.A.- VIRGO Université Claude Bernard LYON I IPNL - IN2P3 – CNRS 22, Boulevard Niels Bohr

Solution in Ansys: Depending on the analysis you are doing Ansys gives you options on applying different loads and boundary conditions. Thermal analysis:

Standards Unit S4: Understanding Mean, Median, Mode and Range 1 – 2 hours. Groups of ??? activity. Camera to record card matches. Beneficial if students.

Stefan Hild, Andreas Freise, Simon Chelkowski University of Birmingham Roland Schilling, Jerome Degallaix AEI Hannover Maddalena Mantovani EGO, Cascina.

Stefan Hild, Andreas Freise, Simon Chelkowski University of Birmingham Roland Schilling, Jerome Degallaix AEI Hannover Maddalena Mantovani EGO, Cascina.

1-D Steady Conduction: Plane Wall

Feasibility Analysis h T1 T2 T3 T4 T5 One Dimensional Transient Analysis One Dimensional Finite Difference Steady State Analysis T1 and T5 will be known.

Modal Analysis Appendix Five. Training Manual General Preprocessing Procedure March 29, 2005 Inventory # A5-2 Basics of Free Vibration Analysis.

? ? ? ? ? ?.  3 POINT BENDING TEST :  Varying loads and spans  Variables measured in the gravity center:  Deflections with vision machine  Strains.

Theoretical Analysis of a Nanosensor based on WO 3 coated Carbon Nanotube for Ultra-high Sensitive Breath Acetone Sensing Ming Xia, Advisor: Prof. Xingguo.

Optical Configuration Advanced Virgo Review Andreas Freise for the OSD subsystem.

1 The Status of Melody: An Interferometer Simulation Program Amber Bullington Stanford University Optics Working Group March 17, 2004 G D.

Transient Thermal Problems Jake Blanchard Spring 2008.

RFQ CAD Model Beam Dynamics Studies Simon Jolly 3 rd August 2011.

LSC-VIRGO joint meeting - Pisa1 Input mirrors thermal lensing effect Frequency modulation PRCL length in Virgo Some results from a Finesse simulation.

Flat-Top Beam Profile Cavity Prototype

Beams of the Future Mihai Bondarescu, Oleg Kogan, Yanbei Chen, Andrew Lundgreen, Ruxandra Bondarescu, David Tsang A Caltech - AEI - Cornell Collaboration.

Heat load of the radiation cooled Ti target of the undulator based e+ source Felix Dietrich (DESY, TH-Wildau),Sabine Riemann(DESY), Andriy Ushakov(U- Hamburg),

LIGO LaboratoryLIGO-G R Coatings and Their Influence on Thermal Lensing and Compensation in LIGO Phil Willems Coating Workshop, March 21, 2008,

AdV Thermal Compensation System Viviana Fafone AdV/aLIGO joint technical meeting, February 4, 2004.

Experimental investigation of dynamic Photothermal Effect

Coating Program Update Gregory Harry LIGO/MIT on behalf of the Coating Working Group March 22, 2006 LSC Meeting – LHO G R.

Thermoelastic dissipation in inhomogeneous media: loss measurements and thermal noise in coated test masses Sheila Rowan, Marty Fejer and LSC Coating collaboration.

LIGO Laboratory1 Thermal Compensation in LIGO Phil Willems- Caltech Baton Rouge LSC Meeting, March 2007 LIGO-G Z.

Janyce Franc Effect of Laguerre Gauss modes on thermal noise Janyce Franc, Raffaele Flaminio, Nazario Morgado, Simon Chelkowski, Andreas Freise,

Equivalence relation between non spherical optical cavities and application to advanced G.W. interferometers. Juri Agresti and Erika D’Ambrosio Aims of.

17/05/2010A. Rocchi - GWADW Kyoto2 Thermal effects: a brief introduction  In TM, optical power predominantly absorbed by the HR coating and converted.

Advanced Virgo: Optical Simulation and Design Advanced Virgo review Andreas Freise for the OSD Subsystem.

Aspen Flat Beam Profile to Depress Thermal Noise J.Agresti, R. DeSalvo LIGO-G Z.

Effects of as-built Mirrors - analysis using FFT - Hiro Yamamoto, Biplab Bhawal, Xiao Xu, Raghu Dodda (SLU)  LIGO I mirror phase map  FFT tools  Thermal.

LSC meeting, 25/05/07 Thermal lensing simulation 1 Faraday thermal lensing numerical simulations Slim Hamdani EGO LIGO-G Z.

1 CHEM-E7130 Process Modeling Exercise Numerical integration, distributions etc.

Some considerations on radiative cooling V. Fafone, Y. Minenkov, I. Modena, A. Rocchi INFN Roma Tor Vergata.

F.Staufenbiel / EuCARD 2 / Heat load and stress studies of the ILC collimator G. Moortgat-Pick 1;2 S. Riemann 2, F. Staufenbiel 2, A. Ushakov.

HOM hook BNL cavity, thermal losses with temperature-dependent properties of Nb (electrical and thermal) 1 st addendum to the presentation given on 21/2.

LIGO G M Intro to LIGO Seismic Isolation Pre-bid meeting Gary Sanders LIGO/Caltech Stanford, April 29, 2003.

Alessio Rocchi INFN Roma Tor Vergata Thermal Compensation System for Virgo+

ILIAS - Geneve1 Input mirrors thermal lensing effect in Virgo J. Marque.

Thermal Compensation System TCS V. Fafone for the TCS Subsystem.

LIGO-G Z 1 Report of the Optics Working Group to the LSC David Reitze University of Florida March 20, 2003.

Friedrich-Schiller-University Jena Institute of Solid State Physics – Low Temperature Physics Christian Schwarz 15 th September Genoa 1 Investigation.

Thermal compensation issues: sensing and actuation V. Fafone University of Rome Tor Vergata and INFN ASPERA Technological Forum – EGO October, 2011.

Material Downselect Rationale and Directions Gregory Harry LIGO/MIT Kavli Institute for Astrophysics and Space Technology On behalf of downselect working.

CLIC module simulation model

4.1 Different Audio Properties

Beam Window Studies for Superbeams

TBM thermal modelling status

6th Homework - Solution In this homework, we shall model and simulate a thermal system. We shall model heat conduction along a well-insulated copper rod.

Thermal noise reduction through LG modes

Optimization design of the vibration isolation of AC magnet girder

LIGO Scientific Collaboration

Workshop on Gravitational Wave Detectors, IEEE, Rome, October 21, 2004

Flat-Top Beam Profile Cavity Prototype: design and preliminary tests

Modeling of Advanced LIGO with Melody

ANSYS simulation of LIGO ITM

Example: Convection? Radiation? Or Both?

Neural Network Lab Develop a Neural Network to simulate the temperature exiting a heat exchanger: We will use a simulated heat exchanger in DeltaV, EX2_SIM.

Thermal effects of the small cryotrap on AdVirgo TM

Energy from the Sun.

Flat-Top Beam Profile Cavity Prototype

Modes and Modal Classes

Tianjin Institute of Power Sources, Tianjin, China Dr. Songrui Wang

Comb Driven Double Ended Tuning Fork

Simulation Frequency(Hz)

Presentation transcript:

ANSYS simulation of LIGO ITM Frequency shifts with time (dynamic surface heating)

Simulation parameters 2D axysimmetrical model Absorbed power in the coating: 10mW Waist of the gaussian heating beam: 3.4 cm Radiation into space @ 295K Coating modeling included in the simulation We chose 295K because the measured temperature into Virgo towers is (22.0±0.1)°C

Modal analisys results 2D axysimmetrical with coating, T=295K: f0=14459.5199 Hz breathing mode f0=9521.6059 Hz drum mode 2D axysimmetrical with coating, T=300K: f0=14467.1918 Hz breathing mode f0=9526.46525 Hz drum mode Difference with your simulation: (-14462.2638+14467.1918)/14465=8.5·10-5 (-9523.18+9526.46525)/9524.8=8.6·10-5 We think this difference may be due to a non perfect match of our elastic parameters and different eigensolvers in Ansys and Comsol.

Thermal-modal analisys steady state 10mW absorbed into coating T=295K: Δf/f0_breath=1.534·10-6 Δf/f0_drum=1.633·10-6 10mW absorbed into substrate T=295K : Δf/f0_breath=1.651·10-6 Δf/f0_drum=1.614·10-6 10mW absorbed into coating T=300K: Δf/f0_breath=1.283·10-6 Δf/f0_drum=1.324·10-6 10mW absorbed into substrate T=300K : Δf/f0_breath=1.380·10-6 Δf/f0_drum=1.306·10-6 The differences with your results are of the order of 12-14%, these may be due to the fact that we used different temperature dependances of the elastic parameters. Anyway we cannot exclude that the temperature distribution inside the ITM is different as calculated by Ansys and Comsol...

Time dependent solution We read your data files. There are 121 points in both files, if sampled every 5 minutes, it means the time span is 10 hours. If we plot them against time, they look ok. But if we zoom the last hours.... Are we missing something?

Ansys data (T0=295K) Next step will be the solution for 10 mW absorbed into the substrate.