2483
Comment:
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2774
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Deletions are marked like this. | Additions are marked like this. |
Line 14: | Line 14: |
|| Mirror thickness || 15cm ||[[LCGT/subgroup/ifo/ISC/TaskList/CurrentStatus/ClassicalNoise/issue4|issue 4]]|| || Temperature of suspension || 20K || || |
|| Mirror thickness || 15cm || || || 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]] || || Temperature of mirrors || 20K || || |
Line 17: | Line 19: |
|| Number of coatings (ITM) || 9 || || || Number of coatings (ETM) || 18 || || |
|| Number of coatings (ITM) || 9 (?) || || || Number of coatings (ETM) || 18 (?) || || |
Line 27: | Line 29: |
|| Young's modulus of Sapphire || 4e11 Pa || || Density of Sapphire || kg/m^3|| || Poisson ratio of Sapphire || 0.29 || || Thermal expansion of Sapphire (20K) || 5.6e-9 K^-1|| || Specific heat of Sapphire (20K) || 0.69 || || Thermal conductivity of Sapphire (20K) || 1.57e4 || || Thermal expansion of Sapphire (300K) || 5.0e-6 K^-1|| || Specific heat of Sapphire (300K) || 790 || || Thermal conductivity of Sapphire (300K) || 40 || || 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 K^-1|| || Specific heat of Silica (300K) || || || Thermal conductivity of Silica (300K) || 1.38 || || dn/dT of Silica (300K) || 8e-6 K^-1 || || Young's modulus of Tantala || 1.4e11 Pa || || Poisson ratio of Tantala || 0.23 || || Refraction index of Tantala || 2.07 || || Thermal expansion of Tantala (300K) || 3.6e-7 K^-1|| || Specific heat of Tantala (300K) || || || Thermal conductivity of Tantala (300K) || 33 || || dn/dT of Tantala (300K) || 14e-6 K^-1 || TO BE COMPLETED... |
|| 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 || || Thermal expansion of Sapphire (300K) || 5.0e-6 || 1/K|| || Specific heat of Sapphire (300K) || 790 || J/K || || 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 || || 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 || 2.07 || || || 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 || |
Classical-Noise parameters
There are some issues to be discussed.
Beam radius |
3cm |
|
Suspension length |
40cm |
|
Suspension thickness |
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 mirror |
1e-8 |
|
Number of coatings (ITM) |
9 (?) |
|
Number of coatings (ETM) |
18 (?) |
|
Mechanical loss of Silica coating |
1e-4 |
|
Mechanical loss of Tantala coating |
4e-4 |
|
Optical loss of each arm |
70ppm/roundtrip |
|
Optical loss in the SRC |
2% |
|
Optical loss at the PD |
10% |
|
Physical constants
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 |
Thermal expansion of Sapphire (300K) |
5.0e-6 |
1/K |
Specific heat of Sapphire (300K) |
790 |
J/K |
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 |
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 || 2.07 || ||
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 |