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

Differences between revisions 28 and 33 (spanning 5 versions)

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Interferometer Parameters

Old parameter sets (before 2010)

(Classical-noise parameters are here)

Parameter

LCGT VRSE-D (2010)¹

LCGT VRSE-B (2010)²

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			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)

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

-  ⇤ ← Revision 28 as of 2010-06-08 04:37:28 → 
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+   ← Revision 33 as of 2010-06-08 04:43:39 → ⇥
  Size: 5895
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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)>> ||units||
||<bgcolor="#FFFF00":colspan="4"> Laser source ||
+||'''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''' ||
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-||Injecting Laser Power into IFO||75 (carrier) = 78.48 (in total) || ||W||
+||Injecting Laser Power into IFO||78.48 (in total), 75 (carrier) || ||W||
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-|| || || || ||
+||<bgcolor="#FFFF00":colspan="4"> '''Mirror optical properties''' ||