KAGRA ISC Electrical Components Layout October 14, 2019 KAGRA ISC Electrical Components Layout Yuta Michimura Ando Group Department of Physics, University of Tokyo

Scope and Disclaimer 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)

KAGRA Layout EYT TRY table EYC chamber EYA IMC TRANS MCE IYA IYC PSL rack MCE IYA IYC PCY1 PSL IY1 IMMT2T TRX MC IX1 PCX1 MCF PRM PR2 IFI IMM PR3 BS IXC EXC IXA EXA EXT IO IMMT1T IMC REFL REFL MMT PRM POY LSC ASC1 ASC2 AUX POP SR2 POS EX2 EX3 EX4 PR2 BS SR2 SR3 POX AS? OMM AS Server room

List of EOMs, PDs, QPDs EOM (fPMC) EOM (fIMC) EOM (f1) EOM (f2) EOAM (f1) PMCR (fPMC, DC) PMCT (DC) REFCAVR (fIMC, DC) REFCAVT (DC) IP A (DC) IP B (DC) EYT TRY TRYVAC A (DC) TRYVAC B (DC) IMCT (DC) IMCT A (DC) IMCT B (DC) TRY (DC) TRY GR (DC) TRY A (DC) TRY B (DC) TRY GR A (DC) TRY GR B (DC) EY2 EYC POPVAC (f1, f2, DC) POPVAC A (f1, f2, DC) POPVAC B (f1, f2, DC) EY3 EY4 IMCTVAC A (DC) IMCTVAC B (DC) EYA IMC TRANS TRX (DC) TRX GR (DC) TRX A (DC) TRX B (DC) TRX GR A (DC) TRX GR B (DC) REFLVAC (f1, f2, DC) REFLVAC A (f1, f2, DC) REFLVAC B (f1, f2, DC) IMMT2TVAC (DC) IMMT2TVAC A (DC) IMMT2TVAC B (DC) MCE IMMT2T (f1, f2, DC) IMMT2T A (DC) IMMT2T B (DC) IYA IYC PCY1 IMMT1TVAC (DC) TRXVAC A (DC) TRXVAC B (DC) PSL IY1 IMMT2T POYVAC (f1, f2, DC) TRX MC IX1 PCX1 MCF PRM PR2 IFI IMM PR3 BS IXC EXC IXA EXA EXT IO IMMT1T IMC REFL REFL MMT PRM POY LSC ASC1 ASC2 AUX POP SR2 POS EX2 EX3 EX4 EOM (fALSX) SPOS (2*f1, 2*f2, DC) POS GR (fALSX, DC) PR2 BS SR2 IMMT1T (DC) IMCR (fIMC, DC) IMCR A (fIMC, DC) IMCR B (fIMC, DC) SR3 POY (f1, f2, DC) POX POX (f1, f2, DC) POXVAC (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) ASVAC (f1, DC) OMCTVAC (DC) ASVAC A (f1, DC) ASVAC B (f1, DC) OMCTVAC A (DC) OMCTVAC B (DC) AS? AS (f1, DC) OMCT (DC) AS A (f1, DC) AS B (f1, DC) OMCT A (DC) OMCT B (DC) REFL (f1, f2, DC) REFL NRSB (f3-f1, f3-f2, DC) REFL A (f1, f2, DC) REFL B (f1, f2, DC) OMM AS Server room

Where Do Signals Go EYT TRY EYC DC DC EYA IMC TRANS MCE IYA fIMC, DC f1, f2, DC IYC PCY1 PSL IY1 IMMT2T TRX MC IX1 PCX1 MCF PRM PR2 IFI IMM PR3 BS IXC EXC IXA EXA EXT IO IMMT1T IMC REFL REFL MMT PRM POY LSC ASC1 ASC2 AUX POP SR2 POS EX2 EX3 EX4 DC PR2 BS SR2 f1, f2, DC f1, f2, 2*f1, 2*f2, fALSY, DC fIMC, DC SR3 2*f1, 2*f2, fALSX, DC f1, f2, f3-f1, f3-f2, DC POX DC fPMC, DC AS? OMM AS f1, f2, DC f1, DC Server room

RF Generation and Distribution EYT TRY EY2 EYC EY3 EY4 EYA IMC TRANS MCE IYA fPMC IYC PCY1 PSL IY1 IMMT2T TRX MC IX1 PCX1 MCF PRM PR2 IFI IMM PR3 BS IXC EXC IXA EXA EXT IO IMMT1T IMC REFL REFL MMT PRM POY LSC ASC1 ASC2 AUX POP SR2 POS EX2 EX3 EX4 PR2 BS SR2 fIMC f1 → 2*f1 f2 → 2*f2 f3 → f3-f1 → f3-f2 fALSX fALSY SR3 POX AS? OMM AS Server room

Servo Boards EYT TRY EYC EYA IMC TRANS MCE IYA IYC PSL IMMT2T TRX MCF PCY1 PSL IY1 IMMT2T TRX MC IX1 PCX1 MCF PRM PR2 IFI IMM PR3 BS IXC EXC IXA EXA EXT IO IMMT1T IMC REFL REFL MMT PRM POY LSC ASC1 ASC2 AUX POP SR2 POS EX2 EX3 EX4 PR2 BS SR2 Common Mode Servo (for IMC) ISS SR3 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) POX TTFSS PMC Servo OMC Servo ? AS? OMM AS Server room