ansys simulation of ligo itm n.
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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

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ansys simulation of ligo itm

ANSYS simulation of LIGO ITM

Comparison with analytical solution (LIGO-P020026-00-D)

simulation parameters
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

12.5 cm

HR surface

Lateral surface

10 cm

AR surface

LIGO ITM

RED: Ansys results

BLUE: Analytical

transient analysis results

HR surface

AR surface

Transient analysis results

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
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