|
Size: 6422
Comment:
|
Size: 6552
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 44: | Line 44: |
| ||||||PDs|| | ||||||PD/QPD|| |
| Line 48: | Line 48: |
| |||||||| | ||||||fIMC|| |
| Line 56: | Line 56: |
| |||||||| | ||||||f1|| |
| Line 61: | Line 61: |
| |||||||| | ||||||f2|| |
| Line 66: | Line 66: |
| |||||||| | ||||||f3|| || RF Oscillator Source || ? || for f3 (split into 2 and send them to Diff. Freq. Generators)|| ||||||fALS|| |
Analog Electronics for Interferometer Control
Electronics
Name |
Height |
Schematics |
Power |
Description |
RF PD in air |
- |
+-18V |
has DC, RF HI, RF LOW outputs |
|
BB PD in air |
- |
|
|
broadband (for 2*f1, 2*f2 and nonresonant SB ?) |
RF QPD in air |
- |
|
|
should have 4 RF outputs, 4 DC outputs |
DC PD in air |
- |
|
|
should have DC output |
DC QPD in air |
- |
|
|
should have 4 DC outputs |
RF PD for green in air |
- |
|
|
BB can be OK |
DC PD for green in air |
- |
|
|
|
DC QPD for green in air |
- |
|
|
|
TTFSS |
- |
from Interface |
|
|
TTFSS Interface |
- |
+-17V,+-24V,+-200V |
|
|
PMC Servo Board |
- |
|
+-17V,+-24V,+-200V? |
may need interface board |
RF Oscillator Source |
? |
Agilent |
AC |
for the time being |
Frequency Doubler |
1U |
|
|
for sideband power monitor |
Difference Frequency Generator |
|
|
|
for nonresonant sidebands |
Phase Frequency Discriminator |
1U |
|
|
for ALS |
RF Distribution Amplifier |
1U |
|
+-17V,+-24V |
split into 8 |
Delay Line Phase Shifter |
1U |
|
+15V? |
1 input, 1 output? |
Quad IQ Demodulator LSC |
1U |
+-18V |
4 LOs for 4 demodulation channels |
|
Quad IQ Demodulator ASC |
1U |
+-18V |
1 LO for 4 demodulation channels |
|
Common Mode Servo Board |
1U |
|
+-17V,+-24V |
2 inputs, slow and fast outputs |
PD Interface Board |
1U |
|
+-18V |
for ribbon cables from RF PDs. 8 inputs? |
QPD Interface Board |
1U |
|
+-18V? |
for ribbon cables from RF QPDs. 8 inputs? |
ISS Board |
? |
|
|
|
PLL Servo Board |
? |
|
|
|
OMC Servo Board |
? |
|
|
|
References: awiki/RfDesign, awiki/LSC_Photodetectors
Photodetector list
List of the Interferometer Detection Ports JGW-T1402982
For each rack
KAGRA ISC Electrical Components Layout JGW-D1402986
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.
Name |
Height |
Description |
PD/QPD |
||
Quad IQ Demodulator LSC |
1U |
for IMCR(fIMC), IMMT2T(f1), IMMT2T(f2), (1ch left) |
PD Interface Board |
1Ux?? |
how many?? for PMCR, PMCT, REFCAVR, REFCAVT, IMCR, IMCT, IMMT1T, IMMT2T |
QPD Interface Board |
1Ux?? |
how many?? for IP_A/B, IMCR_A/B, IMCT_A/B, IMMT2T_A/B |
fIMC |
||
RF Oscillator Source |
? |
for fIMC sideband (also for Refcav) |
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) |
Delay Line Phase Shifter |
1U |
for TTFSS LO(Refcav lock) |
Delay Line Phase Shifter |
1U |
for CM board LO(IMC LSC) |
Common Mode Servo Board |
1U |
for IMC servo |
Quad IQ Demodulator ASC |
1U |
for IMCR_A QPD(fIMC) |
Quad IQ Demodulator ASC |
1U |
for IMCR_B QPD(fIMC) |
f1 |
||
RF Oscillator Source |
? |
for f1 sideband |
RF Distribution Amplifier |
1U |
for f1. to PSL EOM, to LSC racks, to Frequency Doubler, to Diff. Freq. Generator, to IQ Demod x 1, (3ch left) |
Frequency Doubler |
1U |
f1 to 2*f1 for ISC racks |
Diff. Freq. Generator |
?? |
make f3-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 IQ Demod x 1, (3ch left) |
Frequency Doubler |
1U |
f1 to 2*f1 for ISC racks |
Diff. Freq. Generator |
?? |
make f3-f2 for ISC racks |
f3 |
||
RF Oscillator Source |
? |
for f3 (split into 2 and send them to Diff. Freq. Generators) |
fALS |
||
RF Oscillator Source |
? |
for fALSX sideband for ISC racks |
RF Oscillator Source |
? |
for fALSY sideband for ISC racks |
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.
Name |
Height |
Description |
Quad IQ Demodulator LSC |
1U |
for REFL(f1), REFL(f2), REFL_NRSB(f3-f1), REFL_NRSB(f3-f2) |
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) |
PD Interface Board |
1Ux?? |
how many?? for REFL, REFL_NRSB, POP, SPOP, SPOS, POX, POY, AS, OMCT, POP_GR, POS_GR |
QPD Interface Board |
1Ux?? |
how many?? for REFL_A/B, POP_A/B, AS_A/B, OMCT_A/B |
EX4 rack
Located close to EXC chamber. Takes care of PD/QPDs on TRX table.
Name |
Height |
Description |
PD Interface Board |
1Ux?? |
how many?? for TRX, TRX_GR |
QPD Interface Board |
1Ux?? |
how many?? for TRX_A/B, TRX_GR_A/B |
EY4 rack
Located close to EYC chamber. Components should be the same as those in EX4.
Plan (as of 2012-08)
- Test fabrication of RF PD (by the end of September ?, test in October)
- Compile other analog circuit designs from LIGO into KAGRA spec. (by the end of October)
- Design frequency stabilization related circuits with NAOJ group (by the end of FY2012)