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← Revision 211 as of 2024-05-15 13:09:12 ⇥
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Quantities for chassis (not boards) are shown. Request from IOO+MIF(+IMC suspension) is shown. ||Name ||by 2016.10 <<BR>>(for IMC WFS) ||by 2017.2 <<BR>>(for green PLL, ISS) ||by 2017.5 <<BR>>(for PRMI initial aligment) ||by 2017.7 <<BR>>(for PRMI LSC/ASC) ||by full bKAGRA ||in stock || ||High Power Coil Driver || || || || ||3 ||? || || || || || || || || || || || || || || || || || || || || || || || || || || || || || || || || || || || || || || || || || |
Quantities (without spare) for chassis (not boards) we have to additionally make by the specified time are shown. Request from IOO+MIF(+IMC suspension?). ||Name ||by 2016.10 <<BR>>(for IMC WFS) ||by 2017.2 <<BR>>(for green PLL, ISS) ||by 2017.5 <<BR>>(for PRMI initial alignment) ||by 2017.7 <<BR>>(for PRMI LSC/ASC) ||by full bKAGRA ||Produced || ||High Power Coil Driver || || || || ||3? (only for IMC included) ||? || ||Quad IQ Demodulator LSC || || || || ||7 ||5 || ||Quad IQ Demodulator ASC ||+2 || || ||+4 ||22 ||0 || ||RF Distribution Amplifier ||+1 || || ||+2 ||10 ||1(handmade) || ||Common Mode Servo Board || || || ||+1 ||4 ||0 || ||Frequency Doubler || || || ||+1 ||2 ||0 || ||ISS Board || ||+1? || || ||1 ||0 || ||Phase Frequency Discreminator || ||+1? || || ||1 ||0 || ||VCO with PLL || ||+2? || || ||2 ||0 || == Low noise VCOs == [[/LowNoiseVCOs]] |
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Red rows: To be designed (or selected). Yellow rows: Not yet purchased, short of stock, or in production. Green rows: Ready for bKAGRA Phase 1. White rows: Ready for bKAGRA. Pink rows: status unknown ||Name ||Height ||Schematics ||Power ||Description ||Needed<<BR>>(bKAGRA Phase 1) ||Needed<<BR>>(bKAGRA) ||In stock ||Status || |
Red rows: To be designed (or selected). Yellow rows: Not yet purchased, short of stock, or in production. Green rows: Ready for bKAGRA Phase 1. White rows: Ready for bKAGRA. Pink rows: taken cared by ToyamaU Last update: Sept 11, 2017 (Added electronics for RF AM, updated status) ||Name ||Height ||Schematics ||Power ||Description ||Needed<<BR>>(bKAGRA Phase 1) ||Needed<<BR>>(bKAGRA) ||Produced ||Status || |
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||<#66ff00>RF Oscillator Source ||<#66ff00>2U ||<#66ff00>[[http://www.keysight.com/ja/pd-799470-pn-N5181A/mxg-rf-analog-signal-generator?nid=-536906709.536910813.00&cc=JP&lc=jpn|Agilent N5181A]] ||<#66ff00>AC ||<#66ff00>for the time being ||<#66ff00>5 ||<#66ff00>7 ||<#66ff00>5 ||<#66ff00>Stored in ICRR and Hongo || ||RF PD ||- ||[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1280|JGW-D1201280]] ||+-18V ||has RF HI, RF LOW outputs(BNC), and DC output(Dsub 9pin, which includes +-18V) ||6 ||17 ||3+20+20 ||3 handmaking done; 40 arrived with diodes(20 for MIF, 20 without resonances); test and housing in progress || ||<#ffff00>DC PD ||<#ffff00>- ||<#ffff00>[[http://www.thorlabs.co.jp/thorproduct.cfm?partnumber=PDA100A|Thorlabs PDA100A]] ||<#ffff00>+-12V ||<#ffff00>has DC output(BNC), needs power cable [[http://www.thorlabs.co.jp/thorproduct.cfm?partnumber=PDA-C-72|PDA-C-72]] ||<#ffff00>7 ||<#ffff00>7 ||<#ffff00>6 ||<#ffff00>At Kamioka Branch || |
||<#66ff00>RF Oscillator Source ||2U ||[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=6762|JGW-T1706762]], [[https://www.keysight.com/ja/pdx-x201911-pn-N5181B/mxg-x-series-rf-analog-signal-generator-9-khz-to-6-ghz?cc=JP&lc=jpn|Agilent N5181B]] ||AC ||for the time being (for auxiliary modulations like fPMC, fIMC, fALS, we should use cheaper fixed oscillator) ||5 ||7 ||6 ||Stored in ICRR, Hongo, and Toyama || ||RF PD ||- ||[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1280|JGW-D1201280]] ||+-18V ||has RF HI, RF LOW outputs(BNC), and DC output(Dsub 9pin, which includes +-18V) ||6 ||18 ||3+20+20 ||3 handmaking done; 40 arrived with diodes(20 for MIF, 20 without resonances); [[KAGRA/Subgroups/MIF/AEL/Photodetectors/RFPDList|List]] || ||DC PD ||- ||[[http://www.thorlabs.co.jp/thorproduct.cfm?partnumber=PDA100A|Thorlabs PDA100A]] ||+-12V ||has DC output(BNC), needs power cable [[http://www.thorlabs.co.jp/thorproduct.cfm?partnumber=PDA-C-72|PDA-C-72]] ||7 ||9 ||6+5 ||At Kamioka Branch || |
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||AOM Driver ||- ||Crystal Technology 1110AF-AEFO-1.5 ||+28V || ||1 ||1 ||1 ||At the site || | ||AOM Driver ||- ||Crystal Technology 1110AF-AEFO-1.5 ||+28V || ||1 ||1 ||1 ||At the site, for reference cavity || |
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||<#66ff00>Quad IQ Demodulator LSC ||<#66ff00>1U ||<#66ff00>[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2412|JGW-D1402412]] ||<#66ff00>+-18V ||<#66ff00>4 LOs for 4 demodulation channels ||<#66ff00>1 ||<#66ff00>7 ||<#66ff00>5 ||<#66ff00>At Kamioka Branch || ||<#ff0000>Dual IQ Demodulator ||<#ff0000>1U ||<#ff0000>([[https://dcc.ligo.org/LIGO-E1100044/public|LIGO-E1100044]]) ||<#ff0000>+-18V ||<#ff0000>2 LOs for 2 demodulation channels, fast verison ||<#ff0000>3 ||<#ff0000>3 ||<#ff0000> ||<#ff0000>use QuadIQ for now || ||<#66ff00>Common Mode Servo Board ||<#66ff00>2U ||<#66ff00>[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3705|JGW-D1503705]] ||<#66ff00>+-17V,+-24V ||<#66ff00>2 inputs, slow and fast outputs ||<#66ff00>2 ||<#66ff00>4 ||<#66ff00>1 ||<#66ff00>At Kamioka Branch || |
||<#66ff00>Quad IQ Demodulator LSC ||1U ||[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2412|JGW-D1402412]] ||+-18V ||4 LOs for 4 demodulation channels ||1 ||7 ||5 ||At Kamioka Branch, additional requested to AEL ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5487|JGW-T1605487]]) || ||<#ffff00>Dual IQ Demodulator ||1U ||([[https://dcc.ligo.org/LIGO-E1100044/public|LIGO-E1100044]]) ||+-18V ||2 LOs for 2 demodulation channels, fast verison ||3 ||3 || ||use QuadIQ for now || ||Common Mode Servo Board ||2U ||[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3705|JGW-D1503705]] ||+-17V,+-24V ||2 inputs, slow and fast outputs ||2 ||4 ||5 ||At Kamioka Branch [[KAGRA/Subgroups/MIF/AEL/CMSB|List]]|| |
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||RF QPD ||- ||[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=3812|JGW-D1403812]],[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=3813|JGW-D1403813]] ||+-18V ||should have 4 RF outputs, 4 DC outputs ||8 ||14 ||5+15 ||5 for IMC, 15 for IFO at Kamioka Branch || | ||RF QPD ||- ||[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3812|JGW-D1403812]],[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3813|JGW-D1403813]] ||+-18V ||should have 4 RF outputs, 4 DC outputs ||8 ||14 ||5+15 ||5 for IMC, 15 for IFO at Kamioka Branch; [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/MIF/AEL/Photodetectors/RFQPDList|List]] || |
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||<#ffff00>Quad IQ Demodulator ASC ||<#ffff00>1U ||<#ffff00>[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2412|JGW-D1402412]] ||<#ffff00>+-18V ||<#ffff00>1 LO for 4 demodulation channels ||<#ffff00>8 ||<#ffff00>22 ||<#ffff00>0 ||<#ffff00>use LSC ones for now || ||<#ffff00>RF Distribution Amplifier ||<#ffff00>1U ||<#ffff00>[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4460|JGW-D1504460]] ||<#ffff00>+-24V ||<#ffff00>split into 8 ||<#ffff00>4 ||<#ffff00>10 ||<#ffff00>1 ||<#ffff00>Components for 1 purchased (RF amp + 8way splitter), and assembled || ||<#ff0000>Delay Line Phase Shifter ||<#ff0000>1U ||<#ff0000>([[https://dcc.ligo.org/LIGO-D0900128/public|LIGO-D0900128]]) ||<#ff0000>+15V? ||<#ff0000>for 2 channels ||<#ff0000>3 ||<#ff0000>3 ||<#ff0000> ||<#ff0000> || ||<#ff0000>DC PD Interface Board ||<#ff0000>- ||<#ff0000>([[https://dcc.ligo.org/LIGO-D1002932|LIGO-D1002932]]) ||<#ff0000>+-12V ||<#ff0000>for 4 DC PDs, without whitening filter, on output tables ||<#ff0000>5 ||<#ff0000>6 ||<#ff0000> ||<#ff0000> || |
||<#ffff00>Quad IQ Demodulator ASC ||1U ||[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2412|JGW-D1402412]] ||+-18V ||1 LO for 4 demodulation channels ||8 ||22 ||0 ||Requested to AEL ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5488|JGW-T1605488]]) || ||<#ffff00>RF Distribution Amplifier ||1U ||[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4460|JGW-D1504460]] ||+-24V ||split into 8 ||4 ||10 ||1 ||Requested to AEL ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5490|JGW-T1605490]]) || ||<#ff0000>Delay Line Phase Shifter ||1U ||([[https://dcc.ligo.org/LIGO-D0900128/public|LIGO-D0900128]]) ||+15V? ||for 2 channels ||3 ||3 || || || ||<#ff0000>DC PD Interface Board ||- ||([[https://dcc.ligo.org/LIGO-D1002932|LIGO-D1002932]]) ||+-12V ||for 4 DC PDs, without whitening filter, on output tables ||5 ||6 || || || |
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||<#ff0000>Frequency Doubler ||<#ff0000>1U ||<#ff0000>([[https://dcc.ligo.org/LIGO-D1002178/public|LIGO-D1002178]]) ||<#ff0000>+-17V,+-24V ||<#ff0000>for sideband power monitor ||<#ff0000>1 ||<#ff0000>2 ||<#ff0000> ||<#ff0000> || ||<#ff0000>Difference Frequency Generator ||<#ff0000>1U? ||<#ff0000> ||<#ff0000> ||<#ff0000>for nonresonant sidebands, 2 channels ||<#ff0000>0 ||<#ff0000>1 ||<#ff0000> ||<#ff0000> || |
||<#ffff00>Frequency Doubler ||1U ||([[https://dcc.ligo.org/LIGO-D1002178/public|LIGO-D1002178]]) ||+-17V,+-24V ||for sideband power monitor ||1 ||2 || ||Requested to AEL ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5492|JGW-T1605492]]) || ||<#ff0000>Difference Frequency Generator ||1U? || || ||for nonresonant sidebands, 2 channels ||0 ||1 || || || |
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||<#ff0000>RF PD for green ||<#ff0000>- ||<#ff0000>([[https://dcc.ligo.org/LIGO-D1002969/public|LIGO-D1002969]]) ||<#ff0000> ||<#ff0000>use IR circuit but change PD? ||<#ff0000>2? ||<#ff0000>2 ||<#ff0000> ||<#ff0000> || ||<#ff0000>BB PD for IR ||<#ff0000>- ||<#ff0000>([[https://dcc.ligo.org/LIGO-D1002969/public|LIGO-D1002969]]) ||<#ff0000> ||<#ff0000>for ALS PLL (we use IR beat for KAGRA, while aLIGO uses green beat) ||<#ff0000>2? ||<#ff0000>2 ||<#ff0000> ||<#ff0000> || ||<#ff0000>BB PD Interface Board ||<#ff0000>1U? ||<#ff0000>([[https://dcc.ligo.org/LIGO-D1102079/public|LIGO-D1102079]]) ||<#ff0000> ||<#ff0000>same for RF PD Interface? ||<#ff0000>1? ||<#ff0000>1 ||<#ff0000> ||<#ff0000> || ||<#ffff00>DC PD for green ||<#ffff00>- ||<#ffff00>[[http://www.thorlabs.co.jp/thorproduct.cfm?partnumber=PDA100A|Thorlabs PDA100A]] ||<#ffff00>+-12V ||<#ffff00>has DC output, needs power cable [[http://www.thorlabs.co.jp/thorproduct.cfm?partnumber=PDA-C-72|PDA-C-72]] ||<#ffff00>2? ||<#ffff00>2 ||<#ffff00> ||<#ffff00> || |
||<#ff0000>RF PD for green ||- ||([[https://dcc.ligo.org/LIGO-D1002969/public|LIGO-D1002969]]) || ||use IR circuit but change PD? ||2? ||2 || || || ||<#ff0000>BB PD for IR ||- ||([[https://dcc.ligo.org/LIGO-D1002969/public|LIGO-D1002969]]) || ||for ALS PLL (we use IR beat for KAGRA, while aLIGO uses green beat) ||2? ||2 || || || ||<#ff0000>BB PD Interface Board ||1U? ||([[https://dcc.ligo.org/LIGO-D1102079/public|LIGO-D1102079]]) || ||same for RF PD Interface? ||1? ||1 || || || ||<#ff0000>DC PD for green ||- ||[[http://www.thorlabs.co.jp/thorproduct.cfm?partnumber=PDA100A|Thorlabs PDA100A]] ||+-12V ||has DC output, needs power cable [[http://www.thorlabs.co.jp/thorproduct.cfm?partnumber=PDA-C-72|PDA-C-72]] ||2? ||2 || || || |
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||<#ff0000>Phase Frequency Discriminator ||<#ff0000>1U ||<#ff0000>([[https://dcc.ligo.org/LIGO-D1002476/public|LIGO-D1002476]]) ||<#ff0000>+-17V,+-24V ||<#ff0000>for ALS, 2 channels ||<#ff0000>2? ||<#ff0000>1 ||<#ff0000> ||<#ff0000> || ||<#ff0000>VCO with PLL ||<#ff0000>2U ||<#ff0000>([[https://dcc.ligo.org/LIGO-D0900605/public|LIGO-D0900605]],[[https://dcc.ligo.org/LIGO-D1300812/public|LIGO-D1300812]]) ||<#ff0000>+-17V,+-24V ||<#ff0000> ||<#ff0000>2? ||<#ff0000>2 ||<#ff0000> ||<#ff0000> || |
||<#ff00ff>Phase Frequency Discriminator ||1U ||([[https://dcc.ligo.org/LIGO-D1002476/public|LIGO-D1002476]]) ||+-17V,+-24V ||for ALS, 2 channels ||2? ||1 || ||Made by ToyamaU? || ||<#ff00ff>VCO with PLL ||2U ||([[https://dcc.ligo.org/LIGO-D0900605/public|LIGO-D0900605]],[[https://dcc.ligo.org/LIGO-D1300812/public|LIGO-D1300812]]) ||+-17V,+-24V ||for PLL VCO, we will use [[https://www.keysight.com/ja/pdx-x201773-pn-E8663D/psg-rf-analog-signal-generator-100-khz-to-9-ghz?cc=JP&lc=jpn|E8663D]] ||2? ||2 || ||Made by ToyamaU? || |
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||<#ff0000>DC PD in vacuum ||<#ff0000>- ||<#ff0000>([[https://dcc.ligo.org/LIGO-D1101059|LIGO-D1101059]]) ||<#ff0000> ||<#ff0000>for ISS and OMCTVAC ||<#ff0000>0 ||<#ff0000>3 ||<#ff0000> ||<#ff0000> || ||<#ff0000>DC QPD in vacuum ||<#ff0000>- ||<#ff0000>([[https://dcc.ligo.org/LIGO-T0900423/public|LIGO-T0900423]]) ||<#ff0000> ||<#ff0000>bare QPD without amplifier ||<#ff0000>0 ||<#ff0000>10 ||<#ff0000> ||<#ff0000> || ||<#ff0000>DC QPD in vacuum for green ||<#ff0000>- ||<#ff0000>([[https://dcc.ligo.org/LIGO-T0900423/public|LIGO-T0900423]]) ||<#ff0000> ||<#ff0000>bare QPD without amplifier ||<#ff0000>0 ||<#ff0000>4 ||<#ff0000> ||<#ff0000> || ||<#ff0000>DC PD Amplifier ||<#ff0000>? ||<#ff0000> ||<#ff0000>+-18V ||<#ff0000>for DC PD in vacuum ||<#ff0000>0 ||<#ff0000>2 ||<#ff0000> ||<#ff0000> || ||<#ff0000>DC QPD Amplifier ||<#ff0000>1U ||<#ff0000>([[https://dcc.ligo.org/LIGO-D1002481/public|LIGO-D1002481]]) ||<#ff0000>+-18V ||<#ff0000>for ribbon cables from 2 DC QPDs in vacuum ||<#ff0000>0 ||<#ff0000>7 ||<#ff0000> ||<#ff0000> || ||<#ff0000>ISS Board ||<#ff0000>? ||<#ff0000>([[https://dcc.ligo.org/LIGO-D1001985|LIGO-D1001985]], [[https://dcc.ligo.org/LIGO-D1300439|LIGO-D1300439]]) ||<#ff0000> ||<#ff0000> ||<#ff0000>0 ||<#ff0000>1 ||<#ff0000> ||<#ff0000> || ||<#ff0000>OMC Servo Board ||<#ff0000>? ||<#ff0000> ||<#ff0000> ||<#ff0000> ||<#ff0000>0 ||<#ff0000>1 ||<#ff0000> ||<#ff0000> || ||<#ff0000>RF Oscillator Source(Wenzel OCXO) ||<#ff0000>2U ||<#ff0000>([[https://dcc.ligo.org/LIGO-D080702/public|LIGO-D080702]]) ||<#ff0000> ||<#ff0000> ||<#ff0000>0 ||<#ff0000>7 ||<#ff0000> ||<#ff0000> || ||<#ff0000>EOM/AOM Driver ||<#ff0000>? ||<#ff0000>([[https://dcc.ligo.org/LIGO-E1400445/public|LIGO-E1400445]]) ||<#ff0000> ||<#ff0000>for RF AM stabilization, modulation amplitude adjustment ||<#ff0000>0 ||<#ff0000>3 ||<#ff0000> ||<#ff0000> || |
||<#ff0000>DC PD in vacuum ||- ||([[https://dcc.ligo.org/LIGO-D1101059|LIGO-D1101059]]) || ||for ISS and OMCTVAC ||0 ||3 || || || ||<#ff0000>DC QPD in vacuum ||- ||([[https://dcc.ligo.org/LIGO-T0900423/public|LIGO-T0900423]]); also see [[https://dcc.ligo.org/public/0070/G1100950/001/QPD_test_status.pdf|this]] for the explanation of the 5th diode. || ||bare QPD without amplifier ||0 ||10 || || || ||<#ff0000>DC QPD in vacuum for green ||- ||([[https://dcc.ligo.org/LIGO-T0900423/public|LIGO-T0900423]]) || ||bare QPD without amplifier ||0 ||4 || || || ||<#ff0000>DC PD Amplifier ||? || ||+-18V ||for DC PD in vacuum ||0 ||2 || || || ||<#ff0000>DC QPD Amplifier ||1U ||([[https://dcc.ligo.org/LIGO-D1002481/public|LIGO-D1002481]]) ||+-18V ||for ribbon cables from 2 DC QPDs in vacuum ||0 ||7 || || || ||<#ff00ff>ISS Board ||? ||([[https://dcc.ligo.org/LIGO-D1001985|LIGO-D1001985]], [[https://dcc.ligo.org/LIGO-D1300439|LIGO-D1300439]]) || || ||1? ||1 || ||Made by ToyamaU? || ||<#ff0000>OMC Servo Board ||? || || || ||0 ||1 || || || ||<#ff0000>RF Oscillator Source(Wenzel OCXO) ||2U ||([[https://dcc.ligo.org/LIGO-D080702/public|LIGO-D080702]]) || || ||0 ||7 || || || ||<#ff0000>EOM/AOM Driver ||? ||([[https://dcc.ligo.org/LIGO-E1400445/public|LIGO-E1400445]]) || ||for RF AM stabilization, modulation amplitude adjustment ||0 ||3 || || || |
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== Common Mode Servo list == * [[KAGRA/Subgroups/MIF/AEL/CMSB|Common Mode Servo]] * [[KAGRA/Subgroups/MIF/AEL/CMSB/Oscillation|Issues for oscillation of CMS ]] |
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== System diagram == * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8394 | JGW-D1808394]] * As-built rack diagram maintained by GDS group [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9427 | JGW-D1809427]] |
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* Also see the followings for the latest design: * IOO rack: [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=6814| JGW-D1706814]] * IMC rack: [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7021| JGW-D1707021]] * ALS0 and 1 racks: [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8696| JGW-D1808696]] * LSC rack: [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9052| JGW-D1809052]] * OMC0 and 1 racks: [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9823| JGW-D1909823]] [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9844| JGW-D1909844]] * TMSX rack: [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9074| JGW-D1809074 ]] * TMSY rack: [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=10293| JGW-G1910293 ]] |
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||DC PD Interface Board ||- ||for PMCT, REFCAVT, (2ch left) || || ||yes || | ||DC PD Interface Board ||- ||for PMCT, REFCAVT, RFAMR, RFAMT || || ||yes || |
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||Dual IQ Demodulator ||1U ||for IMCR(fIMC), (1ch left) ||Dsubx1(no whitening) || ||yes || | ||Dual IQ Demodulator ||1U ||for IMCR(fIMC), RFAMDLINE(fIMC) ||Dsubx1(no whitening) || ||yes || |
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||RF Distribution Amplifier ||1U ||for fIMC. to PSL EOM, to Delay Line for Refcav, to Delay Line for IMC LSC, to IQ Demod ASC x 2, (3ch left) || || ||yes || | ||RF Distribution Amplifier ||1U ||for fIMC. to PSL EOM, to Delay Line for Refcav, to Delay Line for IMC LSC, to IQ Demod ASC x 2, (3ch left) || || ||yes (by 2016.10) || |
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||ISS Board ||?? || ||?? ||?? ||(by 2017.2)|| | ||ISS Board ||?? || ||?? ||?? ||(by 2017.2) || |
Analog Electronics for Interferometer Control
Upcoming Request for AEL
Quantities (without spare) for chassis (not boards) we have to additionally make by the specified time are shown. Request from IOO+MIF(+IMC suspension?).
Name |
by 2016.10 |
by 2017.2 |
by 2017.5 |
by 2017.7 |
by full bKAGRA |
Produced |
High Power Coil Driver |
|
|
|
|
3? (only for IMC included) |
? |
Quad IQ Demodulator LSC |
|
|
|
|
7 |
5 |
Quad IQ Demodulator ASC |
+2 |
|
|
+4 |
22 |
0 |
RF Distribution Amplifier |
+1 |
|
|
+2 |
10 |
1(handmade) |
Common Mode Servo Board |
|
|
|
+1 |
4 |
0 |
Frequency Doubler |
|
|
|
+1 |
2 |
0 |
ISS Board |
|
+1? |
|
|
1 |
0 |
Phase Frequency Discreminator |
|
+1? |
|
|
1 |
0 |
VCO with PLL |
|
+2? |
|
|
2 |
0 |
Low noise VCOs
Electronics
Red rows: To be designed (or selected). Yellow rows: Not yet purchased, short of stock, or in production. Green rows: Ready for bKAGRA Phase 1. White rows: Ready for bKAGRA. Pink rows: taken cared by ToyamaU
Last update: Sept 11, 2017 (Added electronics for RF AM, updated status)
Name |
Height |
Schematics |
Power |
Description |
Needed |
Needed |
Produced |
Status |
for PSL |
||||||||
RF Oscillator Source |
2U |
AC |
for the time being (for auxiliary modulations like fPMC, fIMC, fALS, we should use cheaper fixed oscillator) |
5 |
7 |
6 |
Stored in ICRR, Hongo, and Toyama |
|
RF PD |
- |
+-18V |
has RF HI, RF LOW outputs(BNC), and DC output(Dsub 9pin, which includes +-18V) |
6 |
18 |
3+20+20 |
3 handmaking done; 40 arrived with diodes(20 for MIF, 20 without resonances); List |
|
DC PD |
- |
+-12V |
has DC output(BNC), needs power cable PDA-C-72 |
7 |
9 |
6+5 |
At Kamioka Branch |
|
TTFSS |
- |
from Interface |
|
1 |
1 |
1 |
At the site |
|
TTFSS Interface |
- |
+-17V,+-24V,+-200V |
|
1 |
1 |
1 |
At the site |
|
AOM Driver |
- |
Crystal Technology 1110AF-AEFO-1.5 |
+28V |
|
1 |
1 |
1 |
At the site, for reference cavity |
PZT Driver |
- |
? |
AC |
for periscope PZTs, 2ch |
1 |
1 |
1 |
At the site?? |
PMC Servo Board |
- |
from Interface |
|
1 |
1 |
1 |
At the site (basically copy of TTFSS) |
|
PMC Servo Board Interface |
- |
+-17V,+-24V,+-200V |
|
1 |
1 |
1 |
At the site (basically copy of TTFSS Interface) |
|
for IMC LSC |
||||||||
Quad IQ Demodulator LSC |
1U |
+-18V |
4 LOs for 4 demodulation channels |
1 |
7 |
5 |
At Kamioka Branch, additional requested to AEL (JGW-T1605487) |
|
Dual IQ Demodulator |
1U |
+-18V |
2 LOs for 2 demodulation channels, fast verison |
3 |
3 |
|
use QuadIQ for now |
|
Common Mode Servo Board |
2U |
+-17V,+-24V |
2 inputs, slow and fast outputs |
2 |
4 |
5 |
At Kamioka Branch List |
|
RF PD Interface Board |
1U |
+-18V |
for ribbon cables from 4 RF PDs, with whitening filter |
3 |
6 |
10 |
At Kamioka Branch |
|
for IMC ASC, better PSL |
||||||||
RF QPD |
- |
+-18V |
should have 4 RF outputs, 4 DC outputs |
8 |
14 |
5+15 |
5 for IMC, 15 for IFO at Kamioka Branch; List |
|
RF QPD Interface Board |
1U |
+- 18V |
for ribbon cables from 4 RF QPDs, without whitening filter |
3 |
4 |
5 |
At Kamioka Branch |
|
DC QPD |
- |
+-15V |
has 4 DC outputs(Dsub 15pin, which includes +-15V) use oplev QPD for the time being |
10 |
12 |
40 |
(including ones for oplevs, ones for green) |
|
DC QPD Interface Board |
1U |
+-18V |
for ribbon cables from 2 DC QPDs, with whitening filter |
5 |
8 |
20 |
At Kamioka Branch (including ones for oplevs) |
|
Quad IQ Demodulator ASC |
1U |
+-18V |
1 LO for 4 demodulation channels |
8 |
22 |
0 |
Requested to AEL (JGW-T1605488) |
|
RF Distribution Amplifier |
1U |
+-24V |
split into 8 |
4 |
10 |
1 |
Requested to AEL (JGW-T1605490) |
|
Delay Line Phase Shifter |
1U |
+15V? |
for 2 channels |
3 |
3 |
|
|
|
DC PD Interface Board |
- |
+-12V |
for 4 DC PDs, without whitening filter, on output tables |
5 |
6 |
|
|
|
for DRFPMI |
||||||||
Frequency Doubler |
1U |
+-17V,+-24V |
for sideband power monitor |
1 |
2 |
|
Requested to AEL (JGW-T1605492) |
|
Difference Frequency Generator |
1U? |
|
|
for nonresonant sidebands, 2 channels |
0 |
1 |
|
|
for ALS |
||||||||
RF PD for green |
- |
|
use IR circuit but change PD? |
2? |
2 |
|
|
|
BB PD for IR |
- |
|
for ALS PLL (we use IR beat for KAGRA, while aLIGO uses green beat) |
2? |
2 |
|
|
|
BB PD Interface Board |
1U? |
|
same for RF PD Interface? |
1? |
1 |
|
|
|
DC PD for green |
- |
+-12V |
has DC output, needs power cable PDA-C-72 |
2? |
2 |
|
|
|
DC QPD for green |
- |
+-15V |
has 4 DC outputs(Dsub 15pin, which includes +-15V) use oplev QPD for the time being |
4? |
4 |
40 |
(including ones for oplevs, ones for IR) |
|
Phase Frequency Discriminator |
1U |
+-17V,+-24V |
for ALS, 2 channels |
2? |
1 |
|
Made by ToyamaU? |
|
VCO with PLL |
2U |
+-17V,+-24V |
for PLL VCO, we will use E8663D |
2? |
2 |
|
Made by ToyamaU? |
|
for better sensitivity |
||||||||
DC PD in vacuum |
- |
|
for ISS and OMCTVAC |
0 |
3 |
|
|
|
DC QPD in vacuum |
- |
(LIGO-T0900423); also see this for the explanation of the 5th diode. |
|
bare QPD without amplifier |
0 |
10 |
|
|
DC QPD in vacuum for green |
- |
|
bare QPD without amplifier |
0 |
4 |
|
|
|
DC PD Amplifier |
? |
|
+-18V |
for DC PD in vacuum |
0 |
2 |
|
|
DC QPD Amplifier |
1U |
+-18V |
for ribbon cables from 2 DC QPDs in vacuum |
0 |
7 |
|
|
|
ISS Board |
? |
|
|
1? |
1 |
|
Made by ToyamaU? |
|
OMC Servo Board |
? |
|
|
|
0 |
1 |
|
|
RF Oscillator Source(Wenzel OCXO) |
2U |
|
|
0 |
7 |
|
|
|
EOM/AOM Driver |
? |
|
for RF AM stabilization, modulation amplitude adjustment |
0 |
3 |
|
|
References: awiki/RfDesign, awiki/LSC_Photodetectors, Cabling LIGO-D1200666
TO DO
- Details of ISS, ALS, OMC servo are uncertain at this point
Common Mode Servo list
Photodetector list
(Original) List of the Interferometer Detection Ports JGW-T1402982
Cable list
List of the ISC cables is available at this Google Spreadsheet.
System diagram
As-built rack diagram maintained by GDS group JGW-D1809427
For each rack
KAGRA ISC Electrical Components Layout JGW-D1402986
Position of digital system racks JGW-D1100425
What's inside the digital system racks JGW-D1402831
- Also see the followings for the latest design:
IOO rack: JGW-D1706814
IMC rack: JGW-D1707021
ALS0 and 1 racks: JGW-D1808696
LSC rack: JGW-D1809052
OMC0 and 1 racks: JGW-D1909823 JGW-D1909844
TMSX rack: JGW-D1809074
TMSY rack: JGW-G1910293
PSL
See JGW-D1402984 for cabling.
Name |
Height |
Description |
to ADC |
from DAC |
bKAGRAp1? |
RF Oscillator Source |
2U |
for fPMC sideband |
|
|
yes |
(RF splitter) |
- |
split fPMC into 2 for PSL EOM, PMCR LO |
|
|
yes |
PMC Servo Board |
- |
for PMC servo, receives PMCR, needs fPMC LO |
|
|
yes |
PMC Servo Board Interface |
- |
for PMC Servo Board |
|
|
yes |
TTFSS |
- |
for Refcav servo, receives REFCAVR, needs fIMC LO from IO rack |
|
|
yes |
TTFSS Interface |
- |
for TTFSS |
?? |
?? |
yes |
DC PD Interface Board |
- |
for PMCT, REFCAVT, RFAMR, RFAMT |
|
|
yes |
PZT Driver |
- |
for periscope PZTs |
|
BNCx2 |
yes |
Output Tables
Interface boxes for Thorlabs DC PDs are located at the respective output tables.
Name |
Height |
Description |
Location |
to ADC |
from DAC |
bKAGRAp1? |
DC PD Interface Board |
- |
for IMCT, (3ch left) |
IMC TRANS table -> IO rack |
Dsubx1(no whitening) |
|
yes |
DC PD Interface Board |
- |
for IMMT1T, (3ch left) |
IMMT1T pylon -> MMT rack |
Dsubx1(no whitening) |
|
yes |
DC PD Interface Board |
- |
for TRX, TRX_GR, (2ch left) |
TRX table -> EX4 rack |
Dsubx1(no whitening) |
|
yes |
DC PD Interface Board |
- |
for TRY, TRY_GR, (2ch left) |
TRY table -> EY4 rack |
Dsubx1(no whitening) |
|
yes |
DC PD Interface Board |
- |
for OMCT, (3ch left) |
AS table -> AS rack? |
Dsubx1(no whitening) |
|
|
IO racks
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, and IMC TRANS tables. Also takes care of equivalent PD/QPDs in vacuum.
Name |
Height |
Description |
to ADC |
from DAC |
bKAGRAp1? |
PD/QPD |
|||||
Dual IQ Demodulator |
1U |
for IMCR(fIMC), RFAMDLINE(fIMC) |
Dsubx1(no whitening) |
|
yes |
RF PD Interface Board |
1U |
for PMCR, REFCAVR, IMCR, (1ch left) |
Dsubx1(no whitening) |
|
yes |
RF QPD Interface Board |
1U |
for IMCR_A/B, (2ch left) |
Dsubx2(no whitening) |
|
yes |
DC QPD Interface Board |
1U |
for IP_A/B |
Dsubx2(whitened) |
|
yes |
DC QPD Interface Board |
1U |
for IMCT_A/B |
Dsubx2(whitened) |
|
yes |
DC QPD Amplifier |
1U |
for IMCTVAC_A/B |
Dsubx2(whitening) |
|
|
fIMC |
|||||
RF Oscillator Source |
2U |
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 ASC x 2, (3ch left) |
|
|
yes (by 2016.10) |
Delay Line Phase Shifter |
1U |
for TTFSS LO(Refcav lock), IMCR LO(IMC LSC) |
|
|
yes |
Common Mode Servo Board |
2U |
for IMC servo |
Dsubx3(no whitening) |
Dsubx1 |
yes |
Quad IQ Demodulator ASC |
1U |
for IMCR_A QPD(fIMC) |
Dsubx2(whitening) |
|
yes (by 2016.10) |
Quad IQ Demodulator ASC |
1U |
for IMCR_B QPD(fIMC) |
Dsubx2(whitening) |
|
yes (by 2016.10) |
f1 |
|||||
RF Oscillator Source |
2U |
for f1 sideband |
|
|
yes |
RF Distribution Amplifier |
1U |
for f1. to PSL EOM, to PSL EOAM, to MMT rack, to LSC racks, to Frequency Doubler, to Diff. Freq. Generator, (2ch left) |
|
|
yes |
Frequency Doubler |
1U |
f1 to 2*f1 for ISC racks |
|
|
yes (by 2017.7) |
f2 |
|||||
RF Oscillator Source |
2U |
for f2 sideband |
|
|
|
RF Distribution Amplifier |
1U |
for f2. to PSL EOM, to MMT rack to LSC racks, to Frequency Doubler, to Diff. Freq. Generator, (3ch left) |
|
|
|
Frequency Doubler |
1U |
f1 to 2*f1 for ISC racks |
|
|
|
f3 |
|||||
RF Oscillator Source |
2U |
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 |
2U |
for fALSX sideband for ISC racks |
|
|
(by 2017.2) |
RF Oscillator Source |
2U |
for fALSY sideband for ISC racks |
|
|
(by 2017.2) |
Others |
|||||
ISS Board |
?? |
|
?? |
?? |
(by 2017.2) |
MMT rack
Located near PRM chamber. Takes care of PD/QPDs on IMMT1 and IMMT2 tables. Also takes care of equivalent PD/QPDs in vacuum.
Name |
Height |
Description |
to ADC |
from DAC |
iKAGRA? |
PD/QPD |
|||||
Quad IQ Demodulator LSC |
1U |
for IMMT2T(f1), IMMT2T(f2), (2ch left) |
Dsubx1(whitening) |
|
|
RF PD Interface Board |
1U |
for IMMT2T, (3ch left) |
Dsubx1(no whitening) |
|
yes |
DC PD Amplifier |
1U |
for IMMT1TVAC, IMMT2TVAC, (2ch left) |
Dsubx1(whitening) |
|
|
DC QPD Interface Board |
1U |
for IMMT2T_A/B |
Dsubx2(whitened) |
|
yes |
DC QPD Amplifier |
1U |
for IMMT2TVAC_A/B |
Dsubx2(whitening) |
|
|
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 |
to ADC |
from DAC |
bKAGRAp1? |
PD/QPD |
|||||
Dual IQ Demodulator |
1U |
for REFL(f1), REFL(f2) |
Dsubx1(no whitening) |
|
yes |
Dual IQ Demodulator |
1U |
for POP_GR(fALSY), POS_GR(fALSX) |
Dsubx1(no whitening) |
|
(by 2017.2) |
Quad IQ Demodulator LSC |
1U |
for REFLNRSB(f3-f1), REFLNRSB(f3-f2), AS(f1), ASVAC(f1) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator LSC |
1U |
for POP(f1), POP(f2), SPOP(2*f1), SPOP(2*f2) |
Dsubx2(whitening) |
|
yes |
Quad IQ Demodulator LSC |
1U |
for SPOS(2*f1), SPOS(2*f2), (2ch left) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator LSC |
1U |
for POX(f1), POX(f2), POY(f1), POY(f2) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator LSC |
1U |
for REFLVAC(f1), REFLVAC(f2), POPVAC(f1), POPVAC(f2) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator LSC |
1U |
for POXVAC(f1), POXVAC(f2), POYVAC(f1), POYVAC(f2) |
Dsubx2(whitening) |
|
|
RF PD Interface Board |
1U |
for REFL, REFLNRSB, AS, SPOS |
Dsubx1(no whitening) |
|
yes |
RF PD Interface Board |
1U |
for POX, POY, POP, SPOP |
Dsubx1(no whitening) |
|
|
RF PD Interface Board |
1U |
for POP_GR, POS_GR, POXVAC, POYVAC |
Dsubx1(no whitening) |
|
|
RF PD Interface Board |
1U |
for REFLVAC, POPVAC, ASVAC, (1ch left) |
Dsubx1(no whitening) |
|
|
BB PD Interface Board |
1U |
for PLLX, PLLY, (2ch left?) |
Dsubx1(no whitening) |
|
|
RF QPD Interface Board |
1U |
for REFL_A/B, POP_A/B |
Dsubx4(no whitening) |
|
yes |
RF QPD Interface Board |
1U |
for AS_A/B, ASVAC_A/B |
Dsubx4(no whitening) |
|
yes |
RF QPD Interface Board |
1U |
for REFLVAC_A/B, POPVAC_A/B |
Dsubx4(no whitening) |
|
|
f1 |
|||||
RF Distribution Amplifier |
1U |
for f1. to Delay Line for CARM, POP LO, POX LO, POY LO, AS LO, REFLVAC LO, ASVAC LO, to RF Dist. |
|
|
yes (by 2017.7) |
RF Distribution Amplifier |
1U |
for f1. to POPVAC LO, POXVAC LO, POYVAC LO, IQ Demod ASC x 3, to RF Dist. |
|
|
|
RF Distribution Amplifier |
1U |
for f1. IQ Demod ASC x 7, to RF Dist. |
|
|
yes (by 2017.7) |
RF Distribution Amplifier |
1U |
for f1. IQ Demod ASC x 2, (6ch left) |
|
|
|
Delay Line Phase Shifter |
1U |
for REFL LO(f1, CARM), REFL LO(f2, CARM) |
|
|
yes |
Common Mode Servo Board |
2U |
for CARM servo |
Dsubx3(no whitening) |
Dsubx1 |
yes |
Quad IQ Demodulator ASC |
1U |
for REFL_A QPD(f1) |
Dsubx2(whitening) |
|
yes (by 2017.7) |
Quad IQ Demodulator ASC |
1U |
for REFL_B QPD(f1) |
Dsubx2(whitening) |
|
yes (by 2017.7) |
Quad IQ Demodulator ASC |
1U |
for POP_A QPD(f1) |
Dsubx2(whitening) |
|
yes (by 2017.7) |
Quad IQ Demodulator ASC |
1U |
for POP_B QPD(f1) |
Dsubx2(whitening) |
|
yes (by 2017.7) |
Quad IQ Demodulator ASC |
1U |
for AS_A QPD(f1) |
Dsubx2(whitening) |
|
yes (by 2017.7) |
Quad IQ Demodulator ASC |
1U |
for AS_B QPD(f1) |
Dsubx2(whitening) |
|
yes (by 2017.7) |
Quad IQ Demodulator ASC |
1U |
for REFLVAC_A QPD(f1) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator ASC |
1U |
for REFLVAC_B QPD(f1) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator ASC |
1U |
for POPVAC_A QPD(f1) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator ASC |
1U |
for POPVAC_B QPD(f1) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator ASC |
1U |
for ASVAC_A QPD(f1) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator ASC |
1U |
for ASVAC_B QPD(f1) |
Dsubx2(whitening) |
|
|
f2 |
|||||
RF Distribution Amplifier |
1U |
for f2. to Delay Line for CARM, POP LO, POX LO, POY LO, REFLVAC LO, POPVAC LO, POXVAC LO, RF Dist. |
|
|
|
RF Distribution Amplifier |
1U |
for f2. to POYVAC LO, RF Dist., (6ch left) |
|
|
|
RF Distribution Amplifier |
1U |
for f2. IQ Demod ASC x 8 |
|
|
|
Quad IQ Demodulator ASC |
1U |
for REFL_A QPD(f2) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator ASC |
1U |
for REFL_B QPD(f2) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator ASC |
1U |
for POP_A QPD(f2) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator ASC |
1U |
for POP_B QPD(f2) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator ASC |
1U |
for REFLVAC_A QPD(f2) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator ASC |
1U |
for REFLVAC_B QPD(f2) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator ASC |
1U |
for POPVAC_A QPD(f2) |
Dsubx2(whitening) |
|
|
Quad IQ Demodulator ASC |
1U |
for POPVAC_B QPD(f2) |
Dsubx2(whitening) |
|
|
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 POP EOM, Delay Line for ALSX |
|
|
(by 2017.2) |
Delay Line Phase Shifter |
1U |
for POP_GR LO(ALSX), POS_GR LO(ALSY) |
|
|
(by 2017.2) |
Common Mode Servo Board |
2U |
for ALSX servo |
Dsubx3(no whitening) |
Dsubx1 |
|
(RF splitter) |
- |
split fALSY into 2 for POS EOM, Delay Line for ALSY |
|
|
|
Common Mode Servo Board |
2U |
for ALSY servo |
Dsubx3(no whitening) |
Dsubx1 |
|
Phase Frequency Discriminator |
1U |
for ALSX, ALSY |
?? |
?? |
(by 2017.2) |
VCO with PLL |
2U |
for ALSX |
?? |
?? |
(by 2017.2) |
VCO with PLL |
2U |
for ALSY |
?? |
?? |
(by 2017.2) |
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 |
to ADC |
from DAC |
bKAGRAp1? |
PD/QPD |
|||||
DC QPD Interface Board |
1U |
for TRX_A/B |
Dsubx2(whitened) |
|
yes |
DC QPD Interface Board |
1U |
for TRX_GR_A/B |
Dsubx2(whitened) |
|
yes |
DC QPD Amplifier |
1U |
for TRXVAC_A/B |
Dsubx2(whitening) |
|
|
DC QPD Amplifier |
1U |
for TRXVAC_GR_A/B |
Dsubx2(whitening) |
|
|
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. Takes care of PD/QPDs for OMC servo.
Name |
Height |
Description |
to ADC |
from DAC |
bKAGRAp1? |
PD/QPD |
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DC PD Amplifier |
- |
for OMCTVAC, (3ch left) |
Dsubx1(whitening) |
|
|
DC QPD Interface Board |
1U |
for OMCT_A/B |
Dsubx2(whitened) |
|
|
DC QPD Amplifier |
1U |
for OMCTVAC_A/B |
Dsubx2(whitening) |
|
|
Others |
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OMC Servo board |
?? |
for OMC lock |
?? |
?? |
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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)