Differences between revisions 21 and 32 (spanning 11 versions)
Revision 21 as of 2021-02-26 23:27:23
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Revision 32 as of 2021-08-11 16:03:32
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Check also [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?dochttps://mail.google.com/mail/u/2/id=4014|MIR Document and Drawings Tree]]
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 * f1 modulation depth:
 * f2 modulation depth:
 * f1 modulation depth: 0.22(2) using Y arm https://klog.icrr.u-tokyo.ac.jp/osl/?r=9505
  * 0.24(1) using X arm, before Harmonic Generator installation on 2019/2/14 https://klog.icrr.u-tokyo.ac.jp/osl/?r=7307
 * f2 modulation depth: 0.23(2) using Y arm https://klog.icrr.u-tokyo.ac.jp/osl/?r=9505
  * 0.0053(2) using X arm, before Harmonic Generator installation on 2019/2/14 https://klog.icrr.u-tokyo.ac.jp/osl/?r=7307
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  * '''Notes''': After PR2 was moved.   * '''Notes''': After PR2 was moved. New measurement says 26.6 +/- 1.5 deg (round-trip) https://klog.icrr.u-tokyo.ac.jp/osl/?r=15179
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  * '''Notes''':   * '''Notes''': New measurement says 80.18 +/- 5.9 deg (round-trip) https://klog.icrr.u-tokyo.ac.jp/osl/?r=15179
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 * Power at each ISC detection ports when DRFPMI is locked  * Power at each ISC detection ports when DRMI is locked
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  * '''Measured''': 11-12
  * '''Measurement method''': REFERENCE TO BE ADDED
  * '''Notes''':
  * '''Measured''': 10-12
  * '''Measurement method''': arm cavity transmitted power enhancement https://klog.icrr.u-tokyo.ac.jp/osl/?r=12639
  * '''Notes''': https://klog.icrr.u-tokyo.ac.jp/osl/?r=12643
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POS table layout
https://klog.icrr.u-tokyo.ac.jp/osl/?r=14622
IMC REFL (and TRANS): note that BSW11 is used (Ts=~40%, not 50%) https://klog.icrr.u-tokyo.ac.jp/osl/?r=3726

REFL table layout: note that p-pol is coming out from the chamber https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9238

POP table layout (Only cameras for POP s-pol and p-pol?) https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9623

POS table layout (DC PDs for POS s-pol and p-pol) https://klog.icrr.u-tokyo.ac.jp/osl/?r=14622

Optical Characterization

This page is intended for summarizing the interferometer optical characterization results and discussions. See following pages and documents for iKAGRA and bKAGRA Phase-1 characterization summary:

See following pages for some design parameters

Check also MIR Document and Drawings Tree

RF Sidebands

Input Mode Cleaner

Arm Cavities

Power Recycling Cavity

Signal Recycling Cavity

Michelson

  • Schnupp asymmetry

Dual Recycled Michelson

  • Power recycling gain
    • Design:

    • Measured: ~3 :o

    • Measurement method: REFERENCE TO BE ADDED

    • Notes:

  • Power at each ISC detection ports when DRMI is locked
    • IMC output:
    • REFL:
    • POP p-pol:
    • POP s-pol:
    • POS p-pol:
    • POS s-pol:
    • AS RF:
    • OMC REFL:
    • OMC TRANS:
    • TRX:
    • TRY:

Power Recycled Fabry-Perot Michelson

  • Power recycling gain for carrier
  • Power recycling gain for f1 sideband
    • Design:

    • Measured:

    • Measurement method:

    • Notes:

  • Power recycling gain for f2 sideband
    • Design:

    • Measured:

    • Measurement method:

    • Notes:

  • Power at each ISC detection ports when PRFPMI is locked
    • IMC output:
    • REFL:
    • POP p-pol:
    • POP s-pol:
    • POS p-pol:
    • POS s-pol:
    • AS RF:
    • OMC REFL:
    • OMC TRANS:
    • TRX:
    • TRY:

Output Mode Cleaner

Sensing Matrix Measurements

  • LSC
  • ASC

Optical Tables

I think we need a power budget here.

http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/IOO/OutputTables/Optics

IMC REFL (and TRANS): note that BSW11 is used (Ts=~40%, not 50%) https://klog.icrr.u-tokyo.ac.jp/osl/?r=3726

REFL table layout: note that p-pol is coming out from the chamber https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9238

POP table layout (Only cameras for POP s-pol and p-pol?) https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=9623

POS table layout (DC PDs for POS s-pol and p-pol) https://klog.icrr.u-tokyo.ac.jp/osl/?r=14622

Others

  • Laser intensity/frequency noise coupling
  • MICH/PRCL/SRCL to DARM coupling
  • MICH contrast defect
  • Type-A, B, Bp actuation efficiency measurements

KAGRA/Subgroups/MIF/OpticalCharacterization (last edited 2021-08-11 16:03:32 by YutaMichimura)