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Size: 2863
Comment:
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Size: 2656
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 8: | Line 8: |
| ||Diameter of suspension fiber ||1.8mm ||[[LCGT/subgroup/ifo/ISC/TaskList/CurrentStatus/ClassicalNoise/issue2|issue 2]] || | ||Diameter of suspension fiber ||1.8mm ||[[LCGT/subgroup/ifo/ISC/ClassicalNoise/issue2|issue 2]] || |
| Line 11: | Line 11: |
| ||Mechanical loss of fiber ||2e-7 ||[[LCGT/subgroup/ifo/ISC/TaskList/CurrentStatus/ClassicalNoise/issue8|issue 8]] || ||Mirror radius ||12.5cm ||[[LCGT/subgroup/ifo/ISC/TaskList/CurrentStatus/ClassicalNoise/issue3|issue 3]] || |
||Mechanical loss of fiber ||2e-7 ||[[LCGT/subgroup/ifo/ISC/ClassicalNoise/issue8|issue 8]] || ||Mirror radius ||12.5cm ||[[LCGT/subgroup/ifo/ISC/ClassicalNoise/issue3|issue 3]] || |
| Line 14: | Line 14: |
| ||Bulk absorption ||20ppm/cm ||[[LCGT/subgroup/ifo/ISC/TaskList/CurrentStatus/ClassicalNoise/issue4|issue 4]] || ||Coating absorption ||0.1ppm ||[[LCGT/subgroup/ifo/ISC/TaskList/CurrentStatus/ClassicalNoise/issue4|issue 4]] || |
||Bulk absorption ||20ppm/cm ||[[LCGT/subgroup/ifo/ISC/ClassicalNoise/issue4|issue 4]] || ||Coating absorption ||0.1ppm ||[[LCGT/subgroup/ifo/ISC/ClassicalNoise/issue4|issue 4]] || |
| Line 17: | Line 17: |
| ||Mechanical loss of a mirror ||1e-8 ||[[LCGT/subgroup/ifo/ISC/TaskList/CurrentStatus/ClassicalNoise/issue7|issue 7]] || | ||Mechanical loss of a mirror ||1e-8 ||[[LCGT/subgroup/ifo/ISC/ClassicalNoise/issue7|issue 7]] || |
| Line 20: | Line 20: |
| ||Mechanical loss of Silica coatings ||1e-4 ||[[LCGT/subgroup/ifo/ISC/TaskList/CurrentStatus/ClassicalNoise/issue5|issue 5]] || ||Mechanical loss of Tantala coatings ||4e-4 ||[[LCGT/subgroup/ifo/ISC/TaskList/CurrentStatus/ClassicalNoise/issue5|issue 5]] || ||Optical loss of each arm ||70ppm/roundtrip ||[[LCGT/subgroup/ifo/ISC/TaskList/CurrentStatus/ClassicalNoise/issue6|issue 6]] || |
||Mechanical loss of Silica coatings ||1e-4 ||[[LCGT/subgroup/ifo/ISC/ClassicalNoise/issue5|issue 5]] || ||Mechanical loss of Tantala coatings ||4e-4 ||[[LCGT/subgroup/ifo/ISC/ClassicalNoise/issue5|issue 5]] || ||Optical loss of each arm ||70ppm/roundtrip ||[[LCGT/subgroup/ifo/ISC/ClassicalNoise/issue6|issue 6]] || |
Parameters
There are some issues to be discussed. Beam radius 3cm Suspension length 40cm Diameter of suspension fiber 1.8mm Number of suspension fiber 4 Temperature of suspension 16K Mechanical loss of fiber 2e-7 Mirror radius 12.5cm Mirror thickness 15cm Bulk absorption 20ppm/cm Coating absorption 0.1ppm Temperature of mirrors 20K Mechanical loss of a mirror 1e-8 Number of coating layers (ITM) 9 (?) Number of coating layers (ETM) 18 (?) Mechanical loss of Silica coatings 1e-4 Mechanical loss of Tantala coatings 4e-4 Optical loss of each arm 70ppm/roundtrip Optical loss in the SRC 2% Optical loss at the PD 10%
Material properties
Young's modulus of Sapphire 4e11 Pa Density of Sapphire 4e3 kg/m^3 Poisson ratio of Sapphire 0.29 Thermal expansion of Sapphire (20K) 5.6e-9 1/K Specific heat of Sapphire (20K) 0.69 J/K/kg Thermal conductivity of Sapphire (20K) 1.57e4 W/m/K Thermal expansion of Sapphire (300K) 5.0e-6 1/K Specific heat of Sapphire (300K) 790 J/K/kg Thermal conductivity of Sapphire (300K) 40 W/m/K Young's modulus of Silica 7.2e10 Pa Poisson ratio of Silica 0.17 Refraction index of Silica 1.45 Thermal expansion of Silica (300K) 5.1e-7 1/K Specific heat per volume of Silica (300K) 1.64e6 J/K/m^3 Thermal conductivity of Silica (300K) 1.38 W/m/K dn/dT of Silica (300K) 8e-6 1/K Young's modulus of Tantala 1.4e11 Pa Poisson ratio of Tantala 0.23 Refraction index of Tantala 2.06 Thermal expansion of Tantala (300K) 3.6e-7 1/K Specific heat per volume of Tantala (300K) 2.1e6 J/K/m^3 Thermal conductivity of Tantala (300K) 33 W/m/K dn/dT of Tantala (300K) 14e-6 1/K