Assembly Status of KAGRA Suspensions
Status
Red: no drawing, Orange: designed/ordered, Yellow: delivered, Green: assembled, Cyan: tested, Blue: Installed
Suspensions |
Type |
Stack |
IP |
F0 |
SF |
BF |
IM/IRM |
TM/RM |
Comments |
iKAGRA |
|||||||||
MCi |
C |
|
X |
X |
X |
X |
|
|
delivered to Kamioka |
MCo |
C |
|
X |
X |
X |
X |
|
|
delivered to Kamioka |
MCe |
C |
|
X |
X |
X |
X |
|
|
not aligned yet |
PR2 |
Bp |
X |
X |
X |
|
|
|
|
|
PR3 |
Bp |
X |
X |
X |
|
|
|
|
|
BS |
B |
X |
|
|
|
|
|
|
|
iETMX |
Fixed Bp |
X |
X |
X |
X |
|
|
|
|
iETMY |
Fixed Bp |
X |
X |
X |
X |
|
|
|
|
iITMX |
Bp? |
X |
X |
X |
|
|
|
|
maybe we don't make this |
iITMY |
Bp? |
X |
X |
X |
|
|
|
|
maybe we don't make this |
bKAGRA |
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PRM |
Bp |
X |
X |
X |
|
|
|
|
|
SR3 |
B |
X |
|
|
|
|
|
|
|
SR2 |
B |
X |
|
|
|
|
|
|
|
SRM |
B |
X |
|
|
|
|
|
|
|
bETMX |
A |
X |
|
|
|
|
|
|
|
bETMY |
A |
X |
|
|
|
|
|
|
|
bITMX |
A |
X |
|
|
|
|
|
|
|
bITMY |
A |
X |
|
|
|
|
|
|
|
IFI |
C |
|
X |
X |
X |
X |
|
|
|
IMMT1 |
C |
|
X |
X |
X |
X |
|
|
|
IMMT2 |
C |
|
X |
X |
X |
X |
|
|
|
OFI |
C |
|
X |
X |
X |
X |
|
|
|
OMC |
C |
|
X |
X |
X |
X |
|
|
|
TMSX |
C |
|
X |
X |
X |
X |
|
|
|
TMSY |
C |
|
X |
X |
X |
X |
|
|
|
Configurations
Type-A: IP + F0 + Standard GAS (3 stage) + BF + PF + IM + TM
Type-B: IP + F0 + Standard GAS (1 stage) + BF + IM + TM
Type-Bp: Standard GAS (1 stage) + BF + IM + TM
Fixed Type-Bp: BF + IM + TM
Type-C: Stack (+ IM) + TM
Mirrors etc. |
iKAGRA |
bKAGRA |
bETM, bITM |
|
Type-A |
iETM |
Fixed Type-Bp |
|
BS |
Type-B |
Type-B |
PRM |
|
Type-Bp |
PR2,PR3 |
Type-Bp |
Type-Bp |
SRM,SR2,SR3 |
|
Type-B |
MCi/o/e,IFI,IMMT |
Type-C |
Type-C |
OFI,OMC,TMS |
|
Type-C |
Sensors and Actuators
See JGW-T1402170 for arrangements of sensors and actuators for Type-A.
Similar arrangements apply for (Fixed) Type-Bp and Type-B.
For Type-C, we have TM actuation only.
Abbreviations
IP: Inverted Pendulum
F0: Top Filter (GAS filter)
SF: Standard Filter (GAS filter)
BF: Bottom Filter (GAS filter)
PF: Platform
GAS: Geometric Anti-Spring
IM: Intermediate Mass
IRM: Intermediate Recoil Mass
TM: Test Mass
RM: Recoil Mass
Payload: (BF + ) IM + IRM + TM + RM