Analog Electronics for Interferometer Control

Electronics

Red rows: To be designed (or selected). Yellow rows: Not yet purchased or short of stock. Green rows: Ready for iKAGRA. White rows: Ready for bKAGRA. Pink rows: status unknown

Name

Height

Schematics

Power

Description

Needed
(iKAGRA)

Needed
(bKAGRA)

In stock

RF PD

-

JGW-D1201280

+-18V

has RF HI, RF LOW outputs(BNC), and DC output(Dsub 9pin, which includes +-18V)

5

17

1

RF QPD

-

JGW-D1402631

+-18V

should have 4 RF outputs, 4 DC outputs

2

14

(5)

DC PD

-

Thorlabs PDA100A

+-12V

has DC output(BNC), needs power cable PDA-C-72

6

6

DC QPD

-

JGW-D1402411

+-15V

has 4 DC outputs(Dsub 15pin, which includes +-15V) use oplev QPD for the time being

10

12

RF PD for green

-

(LIGO-D1002969)

BB can be OK

0

2

DC PD for green

-

Thorlabs PDA100A

+-12V

has DC output, needs power cable PDA-C-72

0

2

DC QPD for green

-

JGW-D1402411

+-15V

has 4 DC outputs(Dsub 15pin, which includes +-15V) use oplev QPD for the time being

0

4

DC PD in vacuum

-

(LIGO-D1101059)

for ISS and OMCTVAC

0

3

DC QPD in vacuum

-

(LIGO-T0900423)

bare QPD without amplifier

0

10

TTFSS

-

JGW-D1301823

from Interface

1

1

TTFSS Interface

-

JGW-D1301831

+-17V,+-24V,+-200V

1

1

PMC Servo Board

-

(LIGO-D1001618)

+-17V,+-24V,+-200V?

may need interface board

1

1

AOM Driver

-

Crystal Technology 1110AF-AEFO-1.5

+28V

1

1

RF Oscillator Source

?

Agilent

AC

for the time being

3

7

5

Frequency Doubler

1U

(LIGO-D1002178)

for sideband power monitor

Difference Frequency Generator

1U?

for nonresonant sidebands, 2 channels

Phase Frequency Discriminator

1U

(LIGO-D1002476)

+-17V,+-24V

for ALS, 2 channels

RF Distribution Amplifier

1U

(LIGO-D1000124)

+-17V,+-24V

split into 8

Delay Line Phase Shifter

1U

(LIGO-D0900128)

+15V?

for 2 channels

Quad IQ Demodulator LSC

1U

JGW-D1402412

+-18V

4 LOs for 4 demodulation channels

1

1

Quad IQ Demodulator ASC

1U

JGW-D1402412

+-18V

1 LO for 4 demodulation channels

2

4

Common Mode Servo Board

1U

(LIGO-D0901781)

+-17V,+-24V

2 inputs, slow and fast outputs

RF PD Interface Board

1U

(LIGO-D1102079)

+-18V

for ribbon cables from 4 RF PDs, with whitening filter

RF QPD Interface Board

1U

(LIGO-D1101906)

+- 18V

for ribbon cables from 4 RF QPDs, without whitening filter

DC QPD Interface Board

1U

JGW-D1302087

+-18V

for ribbon cables from 2 DC QPDs, with whitening filter

DC QPD Amplifier

1U

(LIGO-D1002481)

+-18V

for ribbon cables from 2 DC QPDs in vacuum

ISS Board

?

(LIGO-D1001985, LIGO-D1300439)

VCO with PLL

2U

(LIGO-D0900605,LIGO-D1300812)

+-17V,+-24V

OMC Servo Board

?

RF Oscillator Source(Wenzel OCXO)

2U

(LIGO-D080702)

0

7

Photodetector list

For each rack

IO rack

Located between PSL and MCF chamber. Generates RF for fIMC, f1, f2, f3, 2*f1, 2*f2, f3-f1, f3-f2, fALSX, and fALSY. Has servo circuits for FRC, IMC, and ISS. Takes care of PD/QPDs on PSL, IMC REFL, IMC TRANS, IMMT1, and IMMT2 tables. Also takes care of equivalent PD/QPDs in vacuum.

Name

Height

Description

iKAGRA?

PD/QPD

Quad IQ Demodulator LSC

1U

for IMCR(fIMC), IMMT2T(f1), IMMT2T(f2), (1ch left)

yes

RF PD Interface Board

1U

for PMCR, REFCAVR, IMCR, IMMT2T

yes

RF QPD Interface Board

1U

for IMCR_A/B, (2ch left)

yes

(DC PDs)

-

PMCT, REFCAVT, IMCT, IMMT1T, IMMT1TVAC, IMMT2TVAC (they come with BNC)

DC QPD Interface Board

1U

for IP_A/B

yes

DC QPD Interface Board

1U

for IMCT_A/B

yes

DC QPD Interface Board

1U

for IMMT2T_A/B

yes

DC QPD Interface Board

1U

for IMCTVAC_A/B

DC QPD Interface Board

1U

for IMMT2TVAC_A/B

fIMC

RF Oscillator Source

?

for fIMC sideband (also for Refcav)

yes

RF Distribution Amplifier

1U

for fIMC. to PSL EOM, to Delay Line for Refcav, to Delay Line for IMC LSC, to IQ Demod x 2, (3ch left)

yes

Delay Line Phase Shifter

1U

for TTFSS LO(Refcav lock), CM board LO(IMC LSC)

yes

Common Mode Servo Board

1U

for IMC servo

yes

Quad IQ Demodulator ASC

1U

for IMCR_A QPD(fIMC)

yes

Quad IQ Demodulator ASC

1U

for IMCR_B QPD(fIMC)

yes

f1

RF Oscillator Source

?

for f1 sideband

yes

RF Distribution Amplifier

1U

for f1. to PSL EOM, to PSL EOAM, to LSC racks, to Frequency Doubler, to Diff. Freq. Generator, to IMMT2T LO, (2ch left)

yes

Frequency Doubler

1U

f1 to 2*f1 for ISC racks

f2

RF Oscillator Source

?

for f2 sideband

RF Distribution Amplifier

1U

for f2. to PSL EOM, to LSC racks, to Frequency Doubler, to Diff. Freq. Generator, to IMMT2T LO, (3ch left)

Frequency Doubler

1U

f1 to 2*f1 for ISC racks

f3

RF Oscillator Source

?

for f3 to splitter

(RF splitter)

-

split f3 into 2 for Diff. Freq. Generator

Diff. Freq. Generator

1U?

make f3-f1 for ISC racks, make f3-f2 for ISC racks

fALSX,fALSY

RF Oscillator Source

?

for fALSX sideband for ISC racks

RF Oscillator Source

?

for fALSY sideband for ISC racks

Others

ISS Board

??

ISC racks

Stands for LSC, ASC1, ASC2 and AUX racks located between PR3 and PR2 chambers. Has servo circuits for CARM, ALSX, and ALSY. Takes care of PD/QPDs on REFL, POP, POS, POX, POY, and AS tables. Also takes care of equivalent PD/QPDs in vacuum.

Name

Height

Description

iKAGRA?

PD/QPD

Quad IQ Demodulator LSC

1U

for REFL(f1), REFL(f2), AS(f1), ASVAC(f1)

yes

Quad IQ Demodulator LSC

1U

for REFL_NRSB(f3-f1), REFL_NRSB(f3-f2), (2ch left)

Quad IQ Demodulator LSC

1U

for POP(f1), POP(f2), SPOP(2*f1), SPOP(2*f2)

Quad IQ Demodulator LSC

1U

for SPOS(2*f1), SPOS(2*f2), POP_GR(fALSY), POS_GR(fALSX)

Quad IQ Demodulator LSC

1U

for POX(f1), POX(f2), POY(f1), POY(f2)

Quad IQ Demodulator LSC

1U

for REFLVAC(f1), REFLVAC(f2), POPVAC(f1), POPVAC(f2)

Quad IQ Demodulator LSC

1U

for POXVAC(f1), POXVAC(f2), POYVAC(f1), POYVAC(f2)

RF PD Interface Board

1U

for REFL, REFL_NRSB, AS, SPOS

yes

RF PD Interface Board

1U

for POX, POY, POP, SPOP

RF PD Interface Board

1U

for POP_GR, POS_GR, POXVAC, POYVAC

RF PD Interface Board

1U

for REFLVAC, POPVAC, ASVAC, (1ch left)

RF QPD Interface Board

1U

for REFL_A/B, POP_A/B

RF QPD Interface Board

1U

for AS_A/B, ASVAC_A/B

RF QPD Interface Board

1U

for REFLVAC_A/B, POPVAC_A/B

(DC PDs)

-

OMCT, OMCTVAC (they come with BNC)

DC QPD Interface Board

1U

for OMCT_A/B

DC QPD Amplifier

1U

for OMCTVAC_A/B

f1

RF Distribution Amplifier

1U

for f1. to Delay Line for CARM, POP LO, POX LO, POY LO, AS LO, (3ch left)

yes

Delay Line Phase Shifter

1U

for CM board LO(CARM), (1ch left)

yes

Common Mode Servo Board

1U

for CARM servo

yes

Quad IQ Demodulator ASC

1U

for REFL_A QPD(f1)

Quad IQ Demodulator ASC

1U

for REFL_B QPD(f1)

Quad IQ Demodulator ASC

1U

for POP_A QPD(f1)

Quad IQ Demodulator ASC

1U

for POP_B QPD(f1)

Quad IQ Demodulator ASC

1U

for AS_A QPD(f1)

Quad IQ Demodulator ASC

1U

for AS_B QPD(f1)

Quad IQ Demodulator ASC

1U

for REFLVAC_A QPD(f1)

Quad IQ Demodulator ASC

1U

for REFLVAC_B QPD(f1)

Quad IQ Demodulator ASC

1U

for POPVAC_A QPD(f1)

Quad IQ Demodulator ASC

1U

for POPVAC_B QPD(f1)

Quad IQ Demodulator ASC

1U

for ASVAC_A QPD(f1)

Quad IQ Demodulator ASC

1U

for ASVAC_B QPD(f1)

f2

RF Distribution Amplifier

1U

for f2. to REFL LO, POP LO, POX LO, POY LO, (4ch left)

Quad IQ Demodulator ASC

1U

for REFL_A QPD(f2)

Quad IQ Demodulator ASC

1U

for REFL_B QPD(f2)

Quad IQ Demodulator ASC

1U

for POP_A QPD(f2)

Quad IQ Demodulator ASC

1U

for POP_B QPD(f2)

Quad IQ Demodulator ASC

1U

for REFLVAC_A QPD(f2)

Quad IQ Demodulator ASC

1U

for REFLVAC_B QPD(f2)

Quad IQ Demodulator ASC

1U

for POPVAC_A QPD(f2)

Quad IQ Demodulator ASC

1U

for POPVAC_B QPD(f2)

2*f1,2*f2

(RF splitter)

-

split 2*f1 into 2 for SPOP LO, SPOS LO

(RF splitter)

-

split 2*f2 into 2 for SPOP LO, SPOS LO

f3-f1,f3-f2

fALSX,fALSY

(RF splitter)

-

split fALSX into 2 for POS EOM, Delay Line for ALSX

Delay Line Phase Shifter

1U

for CM board LO(ALSX), CM board LO(ALSY)

Common Mode Servo Board

1U

for ALSX servo

(RF splitter)

-

split fALSY into 2 for POP EOM, Delay Line for ALSY

Common Mode Servo Board

1U

for ALSY servo

Phase Frequency Discriminator

1U

for ALSX, ALSY

VCO with PLL

2U

for ALSX

VCO with PLL

2U

for ALSY

EX4 rack

Located close to EXC chamber. Takes care of PD/QPDs on TRX table. Also takes care of equivalent PD/QPDs in vacuum.

Name

Height

Description

iKAGRA?

PD/QPD

(DC PDs)

-

TRX, TRX_GR (they come with BNC)

DC QPD Interface Board

1U

for TRX_A/B

DC QPD Interface Board

1U

for TRX_GR_A/B

DC QPD Amplifier

1U

for TRXVAC_A/B

EY4 rack

Located close to EYC chamber. Components should be the same as those in EX4.

AS rack

Should be located close to OMM chamber.

Name

Height

Description

iKAGRA?

OMC Servo board

??

for OMC lock


Plan (as of 2012-08)

RFPD