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 Overview of IFI was written by K. Somiya[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3537|IFI report]]  Overview of IFI written by K. Somiya[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3537|IFI report]]
   Proposal for KAGRA IO Faraday Isolator written by G. Muller and D.B. Tanner [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3461|Proposal for KAGRA IO Faraday Isolator]]
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{{{#!wiki red/solid'''ATTENTION!'''
The hight of IFI is different from CAD file}}}
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 * Is install counter masses needed ?
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 * How to measure the scattering light from IFI and how to dump that ?
 * Connecting IFI to the digital system.
 * Is installing [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4551|counter masses]] needed ?
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=== Related documents ===
== Related documents ==
 *[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4822|Slide of JPS meeting in March 22nd 2015 written by Kataoka]]
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 *[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4542|Slide of JPS meeting in March 21st 2015 written by Kataoka]]  *[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3440|Slide of JPS meeting in March 21st 2015 written by Kataoka]]

Input Faraday Isolator

Basic Configuration

Parameter of IFI

  • Weight : 18.1kg

  • Size : L=647.7mm, W=177.8mm, H=155.9mm (with bread bord) IFI Drawing

The hight of IFI is different from CAD file

Parameter of baseplate of IFI

Current Status

  • IFI was purchased from UF
  • IFI was completed to Assemble on the PSL table in 2015/11
  • Installation was completed in 2015/11
  • Alignment was completed in 2016/02
  • IFI will not be suspended but directly put on the IFI table
  • A pair of unsuspended steering mirrors (STM) have been used for the beam centering

Pending Problems

  • Total hight of IFI system ( = IFI + Baseplate) is higher than the designed beam hight by 1cm.
  • Is CWP2 replacement needed ?
  • How we test IFI in high power.
  • How to measure the scattering light from IFI and how to dump that ?
  • Connecting IFI to the digital system.

  • Is installing counter masses needed ?

KAGRA/Subgroups/IOO/IFI (last edited 2016-03-22 22:37:39 by YuKataoka)