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== In-vac design considerations ==
[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=10661 | Information from LIGO and VIRGO about in-vac PDs]]
[[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=10545 | PD feedthrough for ISS ]]
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||RF PD ||[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1280|JGW-D1201280]] ||For IR. Same schematic for both in-air and in-vac, but in different kind of box. || ||RF PD ([[KAGRA/Subgroups/MIF/AEL/Photodetectors/RFPDList|List]]) ||[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1280|JGW-D1201280]] ||For IR. Same schematic for both in-air and in-vac, but in different kind of box. ||
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||RF QPD ||[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=2631|JGW-D1402631]] ||For IR. Same schematic for both in-air and in-vac, but in different kind of box. ||
||DC QPD ||[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2411|JGW-D1402411]] ||For IR, in-air. ||		 ||RF QPD ([[KAGRA/Subgroups/MIF/AEL/Photodetectors/RFQPDList|List]]) ||[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=2631|JGW-D1402631]] ||For IR. Same schematic for both in-air and in-vac, but in different kind of box. ||
||DC QPD ([[KAGRA/Subgroups/AOS/DCQPDList|List]], [[KAGRA/Subgroups/AOS/DCQPDDriverList|Driver List]]) ||[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2411|JGW-D1402411]] ||For IR, in-air (same as oplev QPD for now). ||
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See [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=2986|JGW-D1402986]] for location of photodetectors. See [[https://docs.google.com/spreadsheets/d/1EcuZOQP8yrD3s7no9PPGSxSD0V3NGAFvx799IeWH-1U/edit#gid=2019224000|this Google spreadsheet]] for list of photodetectors. See [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=2986|JGW-D1402986]] for location of photodetectors. See [[https://docs.google.com/spreadsheets/d/1EcuZOQP8yrD3s7no9PPGSxSD0V3NGAFvx799IeWH-1U/|this Google spreadsheet]] for list of photodetectors.
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 * iKAGRA configuration (PMC: fPMC sideband / FRC: fIMC sideband / IMC: fIMC sideband, with ASC / FPMI: f1 sideband, without ASC / no ISS)  * iKAGRA configuration (PMC: fPMC sideband / FRC: fIMC sideband / IMC: fIMC sideband, with ASC / 3-km MI: f1 sideband, without ASC / no ISS)

Photodetectors

In-vac design considerations

Information from LIGO and VIRGO about in-vac PDs PD feedthrough for ISS

Types

Name

Schematics

Description

RF PD (List)

JGW-D1201280

For IR. Same schematic for both in-air and in-vac, but in different kind of box.

DC PD

Thorlabs PDA100A

For IR, in-air.

RF QPD (List)

JGW-D1402631

For IR. Same schematic for both in-air and in-vac, but in different kind of box.

DC QPD (List, Driver List)

JGW-D1402411

For IR, in-air (same as oplev QPD for now).

RF PD for green

(LIGO-D1002969)

For green, in-air (could be BB).

DC PD for green

Thorlabs PDA100A

For green, in-air (same for IR for now).

DC QPD for green

JGW-D1402411

For green, in-air (same for IR for now).

DC PD in vacuum

(LIGO-D1101059)

For IR, in-vac.

DC QPD in vacuum

(LIGO-T0900423)

For IR, in-vac, bare QPD without amplifier.

DC QPD in vacuum for green

(LIGO-T0900423)

For green, in-vac, bare QPD without amplifier.

List

See JGW-D1402986 for location of photodetectors. See this Google spreadsheet for list of photodetectors.

  • Modulation frequencies are listed in MIFIOOInterfaces.

  • iKAGRA configuration (PMC: fPMC sideband / FRC: fIMC sideband / IMC: fIMC sideband, with ASC / 3-km MI: f1 sideband, without ASC / no ISS)
  • bKAGRA configuration (PMC: fPMC sideband / FRC: fIMC sideband / IMC: fIMC sideband, with ASC / DRFPMI: f1,f2,f3 sidebands, with ASC / ALS: fALSX,fALSY sidebands, without ASC / with ISS)

For aLIGO, PD/QPDs below are in vacuum (see LIGO-T1000264).

  • RF PDs for REFL, POP, AS
  • RF QPDs for REFL, AS
  • DC QPDs for MC2TRANS, POP, TRX, TRY, OMC (they don't have in air versions)

KAGRA/Subgroups/MIF/AEL/Photodetectors (last edited 2019-08-29 09:02:13 by KiwamuIzumi)