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| [[LCGT/subgroup/ifo/ISC/IFOParameters/BeforeBW|Old parameter sets]] | [[LCGT/subgroup/ifo/ISC/IFOParameters/BeforeBW|Old parameter sets]] (before 2010) |
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| ||Parameter||LCGT VRSE-D(2010)<<FootNote(2004 data referred to [[http://gw.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=30&version=1|LCGT design document 1.0]].)>>||LCGT VRSE-B(2010)<<FootNote(2007 data referred to [[http://gw.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=30|LCGT design document 2.0]] and [[attachment:LCGT/subgroup/ifo/ISC/CoreDocuments/TAC.ppt|TAC presentation]] at 2005/8/23)>>||LCGT BRSE(2009)||LCGT DRSE(2009)||units|| ||Wave length||1064||1064||1064||1064||nm|| ||Initial Laser Power||300||150||150||150||W|| ||Injecting Laser Power into IFO||100||75(carrier)||75||75||W|| ||Modulation depth||Not defined||Not defined|| || || || ||RF freq 1||15.025(AM)||9.98125(AM)|| || ||MHz|| ||RF freq 2||49.5825(PM)||59.8875(PM)|| || ||MHz|| ||MC1 length||9.755||9.755|| || ||m|| ||MC2 length||199.78||180.463?|| || ||m|| ||MC1 FSR||15.525||15.525|| || ||MHz|| ||MC2 FSR||0.75125||0.831771?|| || ||MHz|| ||MC1 Finesse||1720||1720|| || ||MHz|| ||MC2 Finesse||1000||1000|| || ||MHz|| || || || || || || || ||EM Reflectivity||0.99995||0.99995|| 0.99995 || 0.99995 || || ||FM Reflectivity||0.995||0.996|| 0.992 || 0.992 || || ||PRM Reflectivity||0.76||0.80|| 0.77 || 0.77 || || ||SRM Reflectivity||0.68||0.77|| 0.88 || 0.88 || || ||BS Reflectivity||0.5?||0.5?|| 0.5 || 0.5 || || ||EM Transmittance||2e-5||2e-5|| 3e-5 || 3e-5 || || ||FM Transmittance||0.00497||0.00399|| 0.00798 || 0.00798 || || ||PRM Transmittance||0.23997||0.19999|| 0.22998 || 0.22998 || || ||SRM Transmittance||0.31997||0.22999|| 0.11998 || 0.11998 || || ||BS Transmittance||0.49997?||0.49999?|| || || || ||EM Loss||3e-5||1e-5(3e-5?)|| 2e-5 || 2e-5 || || ||FM Loss||3e-5||1e-5(3e-5?)|| 2e-5 || 2e-5 || || ||PRM Loss||3e-5||1e-5(3e-5?)|| 2e-5 || 2e-5 || || ||SRM Loss||3e-5||1e-5(3e-5?)|| 2e-5 || 2e-5 || || ||BS Loss ||3e-5||1e-5(3e-5?)|| || || || || || || || || || || ||Arm cavity length||3000||3000||3000||3000||m|| ||PR cavity length||14.9899?||45?|| || ||m|| ||PRM-BS length||Not defined||Not defined|| || ||m|| ||BS-FM X length||Not defined||Not defined|| || ||m|| ||BS-FM Y length||Not defined||Not defined|| || ||m|| ||Asymmetry length||1.4990?||7.5?|| || ||m|| ||SR cavity length||17.9878?||45?|| || ||m|| ||SRM-BS length||Not determined||Not determined|| || ||m|| ||SRC detuning phase||pi/2||pi/2||pi/2|| 1.343 ||rad|| |
||'''Parameter'''||'''LCGT VRSE-D (2010)'''<<FootNote(2004 data referred to [[http://gw.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=30&version=1|LCGT design document 1.0]].)>>||'''LCGT VRSE-B (2010)'''<<FootNote(2007 data referred to [[http://gw.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=30|LCGT design document 2.0]] and [[attachment:LCGT/subgroup/ifo/ISC/CoreDocuments/TAC.ppt|TAC presentation]] at 2005/8/23)>> ||units|| /* ===================================================================== */ ||<bgcolor="#FFFF00":colspan="4"> '''Laser source''' || ||Wave length||1064|| ||nm|| ||Initial Laser Power||150|| ||W|| ||Injecting Laser Power into IFO||78.48 (in total), 75 (carrier) || ||W|| ||Modulation depth|| 0.3 for both || || || ||RF freq 1|| 11.25 (PM) || ||MHz|| ||RF freq 2|| 45.00 (PM) || ||MHz|| ||MC1 length|| || ||m|| ||MC2 length|| || ||m|| ||MC1 FSR|| || ||MHz|| ||MC2 FSR|| || ||MHz|| ||MC1 Finesse|| || ||MHz|| ||MC2 Finesse|| || ||MHz|| ||<bgcolor="#FFFF00":colspan="4"> '''Mirror optical properties''' || ||EM Reflectivity || 0.999945 || || || ||FM Reflectivity || 0.996 || || || ||PRM Reflectivity || 0.9 || || || ||SRM Reflectivity || 0.8464 = 0.92^2 || || || ||BS Reflectivity || 0.5 || || || ||EM Loss || 45e-6 || || || ||FM Loss || 45e-6 || || || ||PRM Loss || 45e-6 || || || ||SRM Loss || 45e-6 || || || ||BS Loss || 100e-6 || || || || Transmittance || 1 - R - Loss || || || || || || || || ||Arm cavity length || 3006.69 || ||m|| ||PR cavity length || 73.2826 || ||m|| ||PRM-BS length || 48.2826 || ||m|| ||BS-FM X length || 26.665515 || ||m|| ||BS-FM Y length || 23.334485 || ||m|| ||Asymmetry length || 3.33103 || ||m|| ||SR cavity length ||17.9878?||45?|| || ||m|| ||SRM-BS length ||Not determined||Not determined|| || ||m|| ||SRC detuning phase|| 0.05934 = 3.4 degree || pi/2 || ||rad|| |
| Line 113: | Line 111: |
| ||Quantum efficiency||Not defined||Not defined|| 0.9 || 0.9 || || | ||Quantum efficiency || 0.9 || 0.9 || || |
Interferometer Parameters
Old parameter sets (before 2010)
(Classical-noise parameters are here)
Laser source |
|||||
Wave length |
1064 |
|
nm |
||
Initial Laser Power |
150 |
|
W |
||
Injecting Laser Power into IFO |
78.48 (in total), 75 (carrier) |
|
W |
||
Modulation depth |
0.3 for both |
|
|
||
RF freq 1 |
11.25 (PM) |
|
MHz |
||
RF freq 2 |
45.00 (PM) |
|
MHz |
||
MC1 length |
|
|
m |
||
MC2 length |
|
|
m |
||
MC1 FSR |
|
|
MHz |
||
MC2 FSR |
|
|
MHz |
||
MC1 Finesse |
|
|
MHz |
||
MC2 Finesse |
|
|
MHz |
||
Mirror optical properties |
|||||
EM Reflectivity |
0.999945 |
|
|
||
FM Reflectivity |
0.996 |
|
|
||
PRM Reflectivity |
0.9 |
|
|
||
SRM Reflectivity |
0.8464 = 0.92^2 |
|
|
||
BS Reflectivity |
0.5 |
|
|
||
EM Loss |
45e-6 |
|
|
||
FM Loss |
45e-6 |
|
|
||
PRM Loss |
45e-6 |
|
|
||
SRM Loss |
45e-6 |
|
|
||
BS Loss |
100e-6 |
|
|
||
Transmittance |
1 - R - Loss |
|
|
||
|
|
|
|
||
Arm cavity length |
3006.69 |
|
m |
||
PR cavity length |
73.2826 |
|
m |
||
PRM-BS length |
48.2826 |
|
m |
||
BS-FM X length |
26.665515 |
|
m |
||
BS-FM Y length |
23.334485 |
|
m |
||
Asymmetry length |
3.33103 |
|
m |
||
SR cavity length |
17.9878? |
45? |
|
|
m |
SRM-BS length |
Not determined |
Not determined |
|
|
m |
SRC detuning phase |
0.05934 = 3.4 degree |
pi/2 |
|
rad |
|
|
|
|
|
|
|
Arm cavity FSR |
0.05 |
0.05 |
|
|
MHz |
PRC cavity FSR |
19.3166 |
6.7 |
|
|
MHz |
Arm cavity Finesse |
1250 |
1548 |
777 |
777 |
|
Arm power gain |
796 |
987 |
|
|
|
Arm power(single) |
0.398 |
0.3859 |
0.202 |
0.202 |
MW |
PR gain |
10 |
10.63 |
11 |
11 |
|
PRC power on BS |
1000 |
797.14 |
825 |
825 |
W |
SR gain |
10 |
14.68 |
? |
N/A |
|
Arm cavity cut-off frequency |
|
16.14 |
31.8 |
31.8 |
Hz |
PR cavity cut-off frequency |
|
1.209e6 |
|
|
Hz |
PR-Arm cut-off frequency |
|
1.189 |
2.3 |
2.3 |
Hz |
Signal band |
|
236.9 |
|
|
Hz |
MICH contrast |
0.995 |
0.995 |
|
|
|
Other losses in PRC |
Not defined |
1e-3 |
0.02/PRG |
0.02/PRG |
|
Other losses in SRC |
Not defined |
|
0.02/SRG |
0.02/SRG |
|
|
|
|
|
|
|
EM mass |
50.9 |
30 |
30 |
30 |
kg |
FM mass |
50.9 |
30 |
30 |
30 |
kg |
PRM mass |
Not defined |
Not defined |
|
|
kg |
SRM mass |
Not defined |
Not defined |
|
|
kg |
BS mass |
Not defined |
Not defined |
|
|
kg |
|
|
|
|
|
|
EM ROC |
4500 |
4500 |
4500 |
4500 |
m |
FM ROC |
Infinity |
Infinity |
Infinity |
Infinity |
m |
FM AR ROC |
12 |
?? |
Infinity |
Infinity |
m |
PRM ROC |
0.81 |
?? |
|
|
m |
SRM ROC |
Not defined |
Not defined |
|
|
m |
BS ROC |
Infinity |
Infinity |
|
|
m |
|
|
|
|
|
|
EM AR Reflectivity |
Not defined |
1e-3 |
|
|
|
FM AR Reflectivity |
Not defined |
1e-3 |
|
|
|
PRM AR Reflectivity |
Not defined |
1e-3 |
|
|
|
SRM AR Reflectivity |
Not defined |
1e-3 |
|
|
|
BS AR Reflectivity |
Not defined |
1e-3 |
|
|
|
EM AR Loss |
Not defined |
Not defined |
|
|
|
FM AR Loss |
Not defined |
Not defined |
|
|
|
PRM AR Loss |
Not defined |
Not defined |
|
|
|
SRM AR Loss |
Not defined |
Not defined |
|
|
|
BS AR Loss |
Not defined |
Not defined |
|
|
|
|
|
|
|
|
|
EM absorption loss (bulk) |
20 |
20 |
|
|
ppm/cm |
FM absorption loss (bulk) |
20 |
20 |
20 |
20 |
ppm/cm |
EM absorption loss (coat) |
|
|
ppm |
||
FM absorption loss (coat) |
<1 |
<1 |
ppm |
||
PRM absorption loss |
5 |
5 |
|
|
ppm/cm |
SRM absorption loss |
5 |
5 |
|
|
ppm/cm |
BS absorption loss |
5 |
5 |
|
|
ppm/cm |
EM thickness |
18 |
15 |
15 |
15 |
cm |
FM thickness |
18 |
15 |
15 |
15 |
cm |
PRM thickness |
Not defined |
Not defined |
|
|
cm |
SRM thickness |
Not defined |
Not defined |
|
|
cm |
BS thickness |
Not defined |
Not defined |
|
|
cm |
EM bulk Loss |
1000 |
1000 |
|
|
ppm |
FM bulk Loss |
1000 |
1000 |
|
|
ppm |
PRM bulk Loss |
1000 |
1000 |
|
|
ppm |
SRM bulk Loss |
1000 |
1000 |
|
|
ppm |
BS bulk Loss |
1000 |
1000 |
|
|
ppm |
|
|
|
|
|
|
OMC input/output mirror reflectivity |
0.8 |
0.8 |
|
|
|
OMC end mirror reflectivity |
0.99995 |
0.99995 |
|
|
|
OMC length |
0.07 |
0.07 |
|
|
m |
OMC MC FSR |
4282 |
4282 |
|
|
MHz |
OMC Finesse |
14 |
14 |
|
|
MHz |
|
|
|
|
|
|
Quantum efficiency |
0.9 |
0.9 |
|
||
Frequency Stabilization band width |
10000 |
10000 |
|
|
Hz |
CARM control band width |
Not defined |
0.1 |
|
|
Hz |
DARM control band width |
Not defined |
1000 |
|
|
Hz |
PRC control band width |
Not defined |
1000 |
|
|
Hz |
MICH control band width |
Not defined |
10 |
|
|
Hz |
SRC control band width |
Not defined |
1000 |
|
|
Hz |
To do list to define parameters for 2009
Reference
Length Sensing Scheme Review by Somiya (Japanese) lcgtrse.pdf
Length Sensing Scheme Review for advLIGO by Somiya AdvLIGO-LSCv4.pdf
2004 data referred to LCGT design document 1.0. (1)
2007 data referred to LCGT design document 2.0 and TAC presentation at 2005/8/23 (2)