Electronics and Cables around IMC Common Mode Servo Board Yuta Michimura Ando Group Department of Physics, University of Tokyo August 10, 2015.

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Presentation transcript:

Electronics and Cables around IMC Common Mode Servo Board Yuta Michimura Ando Group Department of Physics, University of Tokyo August 10, 2015

List up electronics and cables around IMC Common Mode Servo Board References: - JGW-D (IMC servo topology) - LIGO-D (Common Mode Servo Block diagram) - LIGO-D (Common Mode Servo Board) - JGW-D (Quad IQ Demodulator Board) - JGW-D (RF PD) - JGW-D (electronics racks layout) - JGW-D (what’s inside electronics racks)JGW-D LIGO-D LIGO-D040180JGW-D JGW-D JGW-D JGW-D Scope 2

not designed yet for KAGRA LIGO-D (schematic)LIGO-D LIGO-D (schematic of interface board)LIGO-D LIGO-D (schematic of low noise power module)LIGO-D boards are modified for each servo (IMC, ALS, CARM) LIGO-E , awiki (modification summary)LIGO-E awiki Common Mode Servo Board 3 front panel rear panel

consist from main board(bottom), interface board(top left), and low noise power module(top right) Common Mode Servo Board 4

board being fabricated now JGW-D (schematic)JGW-D Quad IQ Demod Board 5 front panel (LIGO-D )LIGO-D rear panel for WFS version (LIGO-D )LIGO-D rear panel for LSC version (LIGO-D )LIGO-D BNC SMA 9pin Dsub female 25pin Dsub female

4 IQ Demod Boards are included in 1 chassis we can use Mini Circuits mixer/LPF if we cannot make chassis assembly on time Quad IQ Demod Board 6 LIGO-D

we should make phase shifters for PMC, FRC, and IMC servo (adjusting cable length may be OK) maximum phase shift we need is 45 deg (if we are going to use IQ demodulator) 45 deg is ~4 m for 15 MHz (FRC, IMC) ~1 m for 52 MHz (PMC) LIGO-D (Delay Line Phase Shifter Assembly)LIGO-D LIGO-D (Delay Line Phase Shifter)LIGO-D Delay Line Phase Shifter 7

7 PCB boards left, 1 in soldering process, some parts missing for further soldering JGW-D (schematic)JGW-D sideband frequency for IMC servo is 15 MHz → resonant circuit should be modified RF PD 8 111mm 51mm 写真は坪野研 4 年生実験レポートより ( 石垣真史, 小林雅俊 ) 石垣真史 小林雅俊

Crystal Technology (driver: 1110AF-AEFO-1.5) AOM for Additive Offset 9 AOM (SMC for input) AOM driver (SMB for AM and FM input) AOM driver (SMA for output) +28V power

Cabling 10 RF PD (IMC REFL) 15 MHz RF Source (details not fixed??) Quad IQ Demod Common Mode Servo Whitening + AA for RTS I MonQ MonRFin BNC SMA IN1Slow OUT1fast SERVO DC power 9f Dsub (pin, gender) 9f RF MON 25f IQ OUTLO ±18V ±17V±24V 37f Controls 1, 2 RF OUT LOW RF OUT HI 9m DC p/n ±18V DC Power Supply Delay Line? AOM driver AOMEOM BNC cable SMA cable ribbon cable DC power cable IO rack IMC REFL table PSL table out +28V DC Power Supply? B C SMB SMC CBB AMFM ??

Rack & Chamber Layout m2.3m3.1m

Why do we use BNC for RF PDs? What do we do with 9-pin D-sub on RF PDs? I’m not sure yet about the details of analog/digital interface Availability of DC power supplies → ±18V, ±12V by default considering of adding ±24V now (Miyakawa) Details of RF source (splitter?) How do we connect cables between inside the PSL clean booth and outside? → There are holes for cables (Miyoki) AC power is available inside the PSL booth (Miyoki) Any booth for output tables? → no (Aso) Questions 12