Diff for "LCGT/subgroup/ifo/ISC/TaskList/CurrentStatus/ClassicalNoise"

Differences between revisions 14 and 15

Classical-Noise parameters

There are some issues to be discussed.

Beam radius	3cm	issue 1
Suspension length	40cm
Suspension thickness	1.8mm	issue 2
Number of suspension fiber	4
Temperature of suspension	16K
Mechanical loss of fiber	2e-7
Mirror radius	12.5cm	issue 3
Mirror thickness	15cm
Bulk absorption	20ppm/cm	issue 4
Coating absorption	0.1ppm	issue 4
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	issue 5
Mechanical loss of Tantala coating	4e-4	issue 5
Optical loss of each arm	70ppm/roundtrip	issue 6
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

LCGT/subgroup/ifo/ISC/TaskList/CurrentStatus/ClassicalNoise (last edited 2009-06-09 16:20:41 by whitehole)

-  ⇤ ← Revision 14 as of 2009-06-05 05:32:11 → 
  Size: 2694
  Editor: KentaroSomiya
  Comment:
+   ← Revision 15 as of 2009-06-05 05:33:55 → ⇥
  Size: 2774
  Editor: KentaroSomiya
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 29:
-|| 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 /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 /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 /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 /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 /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 /K ||
+|| 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 ||