Diff for "LCGT/subgroup/ifo/ISC/IFOParameters"

Differences between revisions 39 and 66 (spanning 27 versions)

Interferometer Parameters

Old parameter sets (before 2010)

(Classical-noise parameters are here)

Parameter	LCGT VRSE-D¹	LCGT VRSE-B	units
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	13.324109		m
MC2 length	13.324109		m
MC1 FSR			MHz
MC2 FSR			MHz
MC1 Finesse			MHz
MC2 Finesse			MHz
Cavity Length
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			m
SRM-BS length			m
SRC detuning phase	0.05934 = 3.4 degree	0	rad
Mirror geometries or mechanical properties
EM mass	30		kg
FM mass	30		kg
PRM mass	Not defined		kg
SRM mass	Not defined		kg
BS mass	Not defined		kg

EM ROC	7113.900		m
FM ROC	7113.900		m
FM AR ROC	Not defined		m
PRM ROC	Not defined		m
SRM ROC	Not defined		m
BS ROC	Infinity		m

EM thickness	15		cm
FM thickness	15		cm
PRM thickness	Not defined		cm
SRM thickness	Not defined		cm
BS thickness	Not defined		cm
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
HR Coating Loss of EM, FM, PRM and SRM	45e-6
BS Loss	100e-6
Transmissivity	1 - R - Loss
AR Transmissivity	0.999
AR Coating Loss	1000e-6

Bulk loss (absorption) (large optics: ???FM, EM)	20		ppm/cm
Bulk loss (absorption) (small optics: ???)	2.5		ppm/cm

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

Output Mode Cleaner
OMC length	1.5		m
OMC Finesse	2000
OMC input/output mirror reflectivity	To be designed
OMC end mirror reflectivity	To be designed
OMC MC FSR	???		MHz
Control Bandwidth
Quantum efficiency	0.9
CARM control band width	30k		Hz
DARM control band width	200		Hz
PRC control band width	50		Hz
MICH control band width	50		Hz
SRC control band width	50		Hz
Feed-Forward gain	-0.97		1/(1-0.97) = 30

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

Special Working Group Report. (1)

LCGT/subgroup/ifo/ISC/IFOParameters (last edited 2011-04-30 00:35:52 by OsamuMiyakawa)

-  ⇤ ← Revision 39 as of 2010-06-08 04:52:04 → 
  Size: 5841
  Editor: DaisukeTatsumi
  Comment:
+   ← Revision 66 as of 2010-06-08 08:27:58 → ⇥
  Size: 4987
  Editor: DaisukeTatsumi
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 9:
-||'''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||
+||<align="center":width="20%">'''Parameter'''||<align="center":width="15%">'''LCGT VRSE-D'''<<FootNote([[http://gw.icrr.u-tokyo.ac.jp/JGWwiki/LCGT/subgroup/ifo/BW|Special Working Group Report]].)>>||<align="center":width="15%">'''LCGT VRSE-B''' ||units||
 Line 33:
+||<bgcolor="#FFFF00":colspan="4"> '''Mirror geometries or mechanical properties''' ||
||EM mass           || 30 || ||kg||
||FM mass           || 30 || ||kg||
||PRM mass          || <:( Not defined || ||kg||
||SRM mass          || <:( Not defined || ||kg||
||BS mass           || <:( Not defined || ||kg||
|| || || || ||
||EM ROC            || 7113.900    || ||m||
||FM ROC            || 7113.900    || ||m||
||FM AR ROC         || <:( Not defined || ||m||
||PRM ROC           || <:( Not defined || ||m||
||SRM ROC           || <:( Not defined || ||m||
||BS ROC            || Infinity    || ||m||
|| || || || ||
||EM thickness      || 15 || ||cm||
||FM thickness      || 15 || ||cm||
||PRM thickness     || <:( Not defined || ||cm||
||SRM thickness     || <:( Not defined || ||cm||
||BS thickness      || <:( Not defined || ||cm||
-Line 39:
+Line 58:
-||EM Loss           || 45e-6    ||  || ||
||FM Loss           || 45e-6    ||  || ||
||PRM Loss          || 45e-6    ||  || ||
||SRM Loss          || 45e-6    ||  || ||
+||HR Coating Loss of EM, FM, PRM and SRM || 45e-6 ||  || ||
-Line 44:
+Line 60:
-|| Transmittance    || 1 - R - Loss ||    || ||
|| || || || || || ||
+|| Transmissivity   || 1 - R - Loss ||    || ||
||AR Transmissivity || 0.999    ||  || ||
||AR Coating Loss   || :-? 1000e-6  || || ||
|| || || || ||
||Bulk loss (absorption) (large optics: ???FM, EM) || :-? 20  || || ppm/cm ||
||Bulk loss (absorption) (small optics: ???)       || :-? 2.5 || || ppm/cm ||
|| || || || ||
-Line 62:
+Line 83:
-||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||
+||<bgcolor="#FFFF00":colspan="4"> '''Output Mode Cleaner''' ||
||OMC length                           || 1.5   || ||m||
||OMC Finesse                          || 2000  || || ||
||OMC input/output mirror reflectivity || X-( To be designed|| || ||
||OMC end mirror reflectivity          || X-( To be designed || || ||
||OMC MC FSR                           || ???   || ||MHz||
||<bgcolor="#FFFF00":colspan="4"> '''Control Bandwidth''' ||
||Quantum efficiency                   || 0.9   || ||　||
||CARM control band width              || 30k   || ||Hz||
||DARM control band width              || 200   || ||Hz||
||PRC control band width               || 50    || ||Hz||
||MICH control band width              || 50    || ||Hz||
||SRC control band width               || 50    || ||Hz||
||Feed-Forward gain                    || -0.97 || || 1/(1-0.97) = 30 ||