KAGRA ISCKAGRA ISCElectrical Components LayoutElectrical Components Layout

Yuta MichimuraAndo Group

Department of Physics, University of Tokyo

April 21, 2023

• Draw rough layout of electrical components (RF distribution, PD/QPDs, servo boards) for KAGRA ISC

• Cameras and picomotors are not included• Components for ISS, ALS, and OMC are very uncertain• “AS rack” is currently not on the rack list

• References: - JGW-D1402908 (IMC servo topology) - JGW-D1402984 (Cabling around PSL+IMC) - JGW-D1100425 (electronics racks layout) - JGW-D1402831 (what’s inside electronics racks) - JGW-T1402982 (list of ISC detection ports) - Wiki/OutputTables (list of output tables)

Scope and DisclaimerScope and Disclaimer

2

IFI

KAGRA LayoutKAGRA Layout

3

MCF IMM

MCE

PRMPR3

PR2BS

SR2

SR3

OMM

IYC

IYA

EYA

EYC

EYT

IXC IXA EXA EXC EXT

IMC REFL

REFL

IMC TRANS

IMMT2T

IMMT1T

POY

POX

POPPOS

TRY

TRX

AS

IO

MC

MMTPRMLSCASC1ASC2AUX

PR2 BS SR2

IX1PCX1

IY1

PCY1

EY2

EY3

EY4

EX2 EX3 EX4

table

chamber

rack

PSL

Server room

AS?

List of EOMs, PDs, QPDsList of EOMs, PDs, QPDs

4

MCF IFI IMM

MCE

PRMPR3

PR2BS

SR2

SR3

OMM

IYC

IYA

EYA

EYC

EYT

IXC IXA EXA EXC EXT

IMC REFL

REFL

IMC TRANS

IMMT2T

IMMT1T

POY

POX

POPPOS

TRY

TRX

AS

IO

MC

MMTPRMLSCASC1ASC2AUX

PR2 BS SR2

IX1PCX1

IY1

PCY1

EY2

EY3

EY4

EX2 EX3 EX4

EOM (fPMC)EOM (fIMC)EOM (f1)EOM (f2)EOM (f3)EOAM (f1)PMCR (fPMC, DC)PMCT (DC)REFCAVR (fIMC, DC)REFCAVT (DC)IP A (DC)IP B (DC)

IMCT (DC)IMCT A (DC)IMCT B (DC)

IMMT2T (f1, f2, DC)IMMT2T A (DC)IMMT2T B (DC)

IMCR (fIMC, DC)IMCR A (fIMC, DC)IMCR B (fIMC, DC)

REFL (f1, f2, DC)REFL NRSB (f3-f1, f3-f2, DC)REFL A (f1, f2, DC)REFL B (f1, f2, DC)

IMMT1T (DC)

POY (f1, f2, DC)

EOM (fALSY)POP (f1, f2, DC)SPOP (2*f1, 2*f2, DC)POP GR (fALSY, DC)POP A (f1, f2, DC)POP B (f1, f2, DC)

EOM (fALSX)SPOS (2*f1, 2*f2, DC)POS GR (fALSX, DC)

Server room

POX (f1, f2, DC)

AS (f1, DC)OMCT (DC)AS A (f1, DC)AS B (f1, DC)OMCT A (DC)OMCT B (DC)

TRX (DC)TRX GR (DC)TRX A (DC)TRX B (DC)TRX GR A (DC)TRX GR B (DC)

TRY (DC)TRY GR (DC)TRY A (DC)TRY B (DC)TRY GR A (DC)TRY GR B (DC)

PSL

AS?

REFLVAC (f1, f2, DC)REFLVAC A (f1, f2, DC)REFLVAC B (f1, f2, DC)IMMT2TVAC (DC)IMMT2TVAC A (DC)IMMT2TVAC B (DC)

IMMT1TVAC (DC)

IMCTVAC A (DC)IMCTVAC B (DC)

POPVAC (f1, f2, DC)POPVAC A (f1, f2, DC)POPVAC B (f1, f2, DC)

POYVAC (f1, f2, DC)

POXVAC (f1, f2, DC)

TRYVAC A (DC)TRYVAC B (DC)TRYVAC GR A (DC)TRYVAC GR B (DC)

TRXVAC A (DC)TRXVAC B (DC)TRXVAC GR A (DC)TRXVAC GR B (DC)

ASVAC (f1, DC)OMCTVAC (DC)ASVAC A (f1, DC)ASVAC B (f1, DC)OMCTVAC A (DC)OMCTVAC B (DC)

Where Do Signals GoWhere Do Signals Go

5

PSL MCF IFI IMM

MCE

PRMPR3

PR2BS

SR2

SR3

OMM

IYC

IYA

EYA

EYC

EYT

IXC IXA EXA EXC EXT

IMC REFL

REFL

IMC TRANS

IMMT2T

IMMT1T

POY

POX

POPPOS

TRY

TRX

AS

IO

MC

MMTPRMLSCASC1ASC2AUX

PR2 BS SR2

IX1PCX1

IY1

PCY1

EY2

EY3

EY4

EX2 EX3 EX4

fIMC, DC

DC

f1, f2, DC

fIMC, DC

DC

f1, f2, f3-f1, f3-f2, DC

f1, f2, DC

f1, DC

f1, f2, DC

2*f1, 2*f2, fALSX, DCf1, f2, 2*f1, 2*f2, fALSY, DC

DC

DC

Server room

fPMC, DC AS?

RF Generation and DistributionRF Generation and Distribution

6

MCF IFI IMM

MCE

PRMPR3

PR2BS

SR2

SR3

OMM

IYC

IYA

EYA

EYC

EYT

IXC IXA EXA EXC EXT

IMC REFL

REFL

IMC TRANS

IMMT2T

IMMT1T

POY

POX

POPPOS

TRY

TRX

AS

IO

MC

MMTPRMLSCASC1ASC2AUX

PR2 BS SR2

IX1PCX1

IY1

PCY1

EY2

EY3

EY4

EX2 EX3 EX4

PSL

Server room

fIMCf1 → 2*f1f2 → 2*f2f3 → f3-f1 → f3-f2fALSXfALSY

fPMC

AS?

Servo BoardsServo Boards

7

MCF IFI IMM

MCE

PRMPR3

PR2BS

SR2

SR3

OMM

IYC

IYA

EYA

EYC

EYT

IXC IXA EXA EXC EXT

IMC REFL

REFL

IMC TRANS

IMMT2T

IMMT1T

POY

POX

POPPOS

TRY

TRX

AS

IO

MC

MMTPRMLSCASC1ASC2AUX

PR2 BS SR2

IX1PCX1

IY1

PCY1

EY2

EY3

EY4

EX2 EX3 EX4

PSL

Server room

Common Mode Servo (for IMC)ISS

TTFSSPMC Servo

Common Mode Servo (for CARM)Common Mode Servo (for ALSX)Common Mode Servo (for ALSY)Phase Frequency Discriminator (for ALSX)Phase Frequency Discriminator (for ALSY)PLL Servo ? (for ALSX)PLL Servo ? (for ALSY)

OMC Servo ?

AS?