ANSYS simulation of LIGO ITM

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Presentation transcript:

ANSYS simulation of LIGO ITM Comparison with analytical solution (LIGO-P020026-00-D)

Simulation parameters 2D axysimmetrical model Absorbed power in the coating: 10mW Absorbed power in the substrate: 10mW Waist of the gaussian heating beam: 3.4 cm Radiation into space @ 295K Coating modeling included in the simulation

LIGO ITM RED: Ansys results BLUE: Analytical 12.5 cm 10 cm HR surface AR surface Lateral surface RED: Ansys results BLUE: Analytical

Heat in the coating

Heat in the substrate

Coating+substrate heating

Transient analysis results HR surface AR surface Legend: Red curve Blue curve Pink curve Green curve Simulation parameters: -10mW absorbed in the coating -internal steps of 5 minutes -length of the sim: 10 hrs

Modal analisys results: breathing mode 2D axysimmetrical without coating: f0=14459.966 Hz 2D axysimmetrical with coating: f0=14459.520 Hz Full 3D model with coating (it takes forever): f0=14463.809 Hz