LCGT noise curves
calculated on 2009.8.28

* The unit is 1/rtHz for all the curves.

hmirrorcoa= coating Brownian thermal noise
hmirrorstr= substrate Brownian thermal noise
hmirrorthermo= substrate thermoelastic noise
hsusp= suspension thermal noise
hseis= seismic noise

varBRSEQN= variable RSE (in BRSE operation) quantum noise
varDRSEQN= variable RSE (in DRSE operation) quantum noise

varBRSE= variable RSE (in BRSE operation) total noise
varDRSE= variable RSE (in DRSE operation) total noise

maxBRSE= max-BRSE (maximum SNR for BNS w/o detuning) total noise
maxDRSE= max-DRSE (maximum SNR for BNS) total noise

SQL= standard quantum limit

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[Mechanical Parameters]

coating mechanical loss
silica: 1e-4
tantala: 4e-4
number of layers silica:9, tantala:18
* silica cap is not included

substrate mechanical loss: 1e-8

suspension mechanical loss: 2e-7
fiber thickness: 1.8mm diameter

test-mass temperature 20K
upper-mass temperature 10K
fiber effective temperature 16K

seismic motion 1e-9*f^(-2)
seismic isolation 1e-3*f^(-6)

[Optical Parameters for variable RSE]

ITM power transmittance= 0.4% (finesse=1550)
SRM power transmittance= 15%
PRM power transmittance= 10%

optical losses= 45ppm per bounce
ETM transmittance= 5ppm

input carrier power= 100W
carrier power at beamsplitter= 825W
* If optical loss per bounce at a mirror is 45ppm,
  PR gain cannot be higher than 8.6, so we need to
  have 100W laser instead of the original 75W.

DC readout phase= 121.8 deg for BRSE operation
                  134.7 deg for DRSE operation
detune phase= 86.5 deg (for DRSE operation)

[SNR for NS-NS binary inspirals]

varBRSE -> SN=8 at 255Mpc
varDRSE -> SN=8 at 281Mpc
maxBRSE -> SN=8 at 259Mpc
maxDRSE -> SN=8 at 299Mpc
* optimal direction
