1. KAGRA ISC Electrical Components Layout Yuta Michimura Ando Group Department of Physics, University of Tokyo December 8, 2015

2. 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 Underlined ones are used also for iKAGRA 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)JGW-D1402908JGW-D1402984JGW-D1100425JGW-D1402831JGW-T1402982Wiki/OutputTables Scope and Disclaimer 2

3. IFI KAGRA Layout 3 MCF IMM MCE PRM PR3 PR2 BS SR2 SR3 OMM IYC IYA EYA EYC EYT IXC IXAEXA EXC EXT IMC REFL REFL IMC TRANS IMMT2T IMMT1T POY POX POP POS TRY TRX AS IO MC MMT PRM LSCASC1ASC2 AUX PR2BSSR2 IX1 PCX1 IY1 PCY1 EY2 EY3 EY4 EX2EX3EX4 table chamber rack PSL Server room AS?

4. List of EOMs, PDs, QPDs 4 MCF IFIIMM MCE PRM PR3 PR2 BS SR2 SR3 OMM IYC IYA EYA EYC EYT IXC IXAEXA EXC EXT IMC REFL REFL IMC TRANS IMMT2T IMMT1T POY POX POP POS TRY TRX AS IO MC MMT PRM LSCASC1ASC2 AUX PR2BSSR2 IX1 PCX1 IY1 PCY1 EY2 EY3 EY4 EX2EX3EX4 EOM (fPMC) EOM (fIMC, f2) EOM (f1, f3) 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, f2-f1, DC) REFL A (f1, f2, DC) REFL B (f1, f2, DC) [IMMT1T (DC)] POY (f1, f2, DC) EOM (fALSX) POP (f1, f2, DC) SPOP (2*f1, 2*f2, DC) POP GR (fALSX, DC) PLLX (BB, DC) [POP A (f1, f2, DC)] [POP B (f1, f2, DC)] EOM (fALSY) SPOS (2*f1, 2*f2, DC) POS GR (fALSY, DC) PLLY (BB, 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) Underline: also for iKAGRA [ ]: may be omitted

5. Where Do Signals Go 5 PSL MCF IFIIMM MCE PRM PR3 PR2 BS SR2 SR3 OMM IYC IYA EYA EYC EYT IXC IXAEXA EXC EXT IMC REFL REFL IMC TRANS IMMT2T IMMT1T POY POX POP POS TRY TRX AS IO MC MMT PRM LSCASC1ASC2 AUX PR2BSSR2 IX1 PCX1 IY1 PCY1 EY2 EY3 EY4 EX2EX3EX4 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, fALSY, BB, DC f1, f2, 2*f1, 2*f2, fALSX, BB, DC DC Server room fPMC, DC AS?

6. RF Generation and Distribution 6 MCF IFIIMM MCE PRM PR3 PR2 BS SR2 SR3 OMM IYC IYA EYA EYC EYT IXC IXAEXA EXC EXT IMC REFL REFL IMC TRANS IMMT2T IMMT1T POY POX POP POS TRY TRX AS IO MC MMT PRM LSCASC1ASC2 AUX PR2BSSR2 IX1 PCX1 IY1 PCY1 EY2 EY3 EY4 EX2EX3EX4 PSL Server room fIMC f1 → 2*f1 f2 → 2*f2 f3 → f3-f1 → f3-f2 fALSX fALSY fPMC AS?

7. List of Servo Boards 7 MCF IFIIMM MCE PRM PR3 PR2 BS SR2 SR3 OMM IYC IYA EYA EYC EYT IXC IXAEXA EXC EXT IMC REFL REFL IMC TRANS IMMT2T IMMT1T POY POX POP POS TRY TRX AS IO MC MMT PRM LSCASC1ASC2 AUX PR2BSSR2 IX1 PCX1 IY1 PCY1 EY2 EY3 EY4 EX2EX3EX4 PSL Server room Common Mode Servo (for IMC) ISS TTFSS PMC 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?

8. List of PZTs 8 MCF IFIIMM MCE PRM PR3 PR2 BS SR2 SR3 OMM IYC IYA EYA EYC EYT IXC IXAEXA EXC EXT IMC REFL REFL IMC TRANS IMMT2T IMMT1T POY POX POP POS TRY TRX AS IO MC MMT PRM LSCASC1ASC2 AUX PR2BSSR2 IX1 PCX1 IY1 PCY1 EY2 EY3 EY4 EX2EX3EX4 PSL Server room Laser PMC Periscope x4 AS? OMC

9. List of Picomotors 9 MCF IFIIMM MCE PRM PR3 PR2 BS SR2 SR3 OMM IYC IYA EYA EYC EYT IXC IXAEXA EXC EXT IMC REFL REFL IMC TRANS IMMT2T IMMT1T POY POX POP POS TRY TRX AS IO MC MMT PRM LSCASC1ASC2 AUX PR2BSSR2 IX1 PCX1 IY1 PCY1 EY2 EY3 EY4 EX2EX3EX4 steering to IMC x4 IP QPD x4 [IMCT QPD x4] [IMMT2T QPD x4] IMCR QPD x4 REFL QPD x4 steering Xgreen x4 [POP QPD x4] Server room AS QPD x4 [OMCT QPD x4] [TRY QPD x4] [TRY GR QPD x4] PSL AS? steering to IFI x4 steering to REFL x4 IMMT2TVAC PD x2 IMMT2TVAC QPD x4 IMMT2TVAC PD x2 MCe sus x2 IMCTVAC QPD x4 steering to POP x4 POPVAC QPD x4 steering to TRY x4 TRYVAC QPD x4 TRYVAC GR QPD x4 steering to AS x4 ASVAC QPD x4 OMCTVAC QPD x4 MCi sus x2 MCe sus x2 steering to TRX x4 TRYVAC QPD x4 TRYVAC GR QPD x4 [TRX QPD x4] [TRX GR QPD x4] steering Ygreen x4