Differences between revisions 1 and 14 (spanning 13 versions)
⇤ ← Revision 1 as of 2018-10-06 19:24:20 →
Size: 690
Editor: TomotadaAkutsu
Comment:
← Revision 14 as of 2018-10-10 10:22:41 → ⇥
Size: 3184
Editor: TomotadaAkutsu
Comment:
Deletions are marked like this. Additions are marked like this.
Line 2: Line 2:
 * [[]]  * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=6452]]
 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=6455]]
 * [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=6458]]
Line 6: Line 8:

=== BRT part installation ===

 * See [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=6455|here]]

=== GPT part installation ===
 * We brought five QPD mechanical basis with plastic case which was used to store Dsub cables.
   * AFTER QPD INSTALLATION, WE SHOULD RETURN THE BOX TO 低音鏡機械室.
 * After BRT part was installed and aligned, we started to install GPT part (in-air part).
 * We found that damping of TMS-VIS was not necessary for GPT installation.
 * Following the [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8962|design]], we installed the beginning part of the green light path, two periscope mirrors, two steering mirrors, and one lenses.
   * First periscope mirror (GPM1): TFM-50C080532 (Opto-Sigma)
    {{attachment:GPM1.jpg|GPM1|width="400" }}
   * Second periscope mirror (GPM2): TFM-50C080532 (Opto-Sigma)
    {{attachment:GPM2.jpg|GPM2|width="400" }}
   * First steering mirror (GST1): TFM-50C080532 (Opto-Sigma)
    {{attachment:GST1.jpg|GST1|width="400" }}
   * Second steering mirror (GST2): TFM-50C080532 (Opto-Sigma)
    {{attachment:GST2.jpg|GST2|width="400" }}
   * First lens (GLNS1, f=500): LA1380-A-ML (Thorlabs)
    {{attachment:GLNS1.jpg|GLNS1|width="400" }}
 * At first, all mirrors were installed. Then the lens was installed not to change beam position.
 * The lens position, i.e. beam profile, was not tuned since the tuning was not so effective without arm cavity locked.
 * In the end of today's work, we installed DC PD (PDA100A2, Thorlabs) after GST2 temporarily. The gain was set to 0 dB.
  {{attachment:GPD_gain.jpg|GPD|width="400" }}
 * After all, GPT part looks like below.
  {{attachment:Overview.jpg|overview|width="400" }}
 * The signal was checked like [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=6452|this]].
   * Enomoto-kun kindly built model (k1aostmsx) and restarted k1dc0 to register channel for IR and Green DC PD befor the above klog6452.
Line 14: Line 45:
 * Align BRT
 * Start to install GPT part
 * Damping of TMS-VIS
  * Install optics after GBS1
 * Install gigE camera
 * Modify MEDM screen
   * Add DC PD and so on.
 * Cable Dsub 15pin for TMS-VIS OpLev.
 * Modify cabling for DC PD.
 * Return plastic box.
 * Install rails in digital rack.
   * They may be necessary under LVDT distributor, geophone distributor, and WHT board.
   * Nagano is not sure it is necessary under HP coil driver.
 * Consider how to cable Dsub cables to QPD.
Line 21: Line 59:
 * FIVE QPD electronics boards

20181006

Today's activities

Workers: Akutsu, K. Nagano

BRT part installation

GPT part installation

  • We brought five QPD mechanical basis with plastic case which was used to store Dsub cables.
    • AFTER QPD INSTALLATION, WE SHOULD RETURN THE BOX TO 低音鏡機械室.
  • After BRT part was installed and aligned, we started to install GPT part (in-air part).
  • We found that damping of TMS-VIS was not necessary for GPT installation.

  • Following the design, we installed the beginning part of the green light path, two periscope mirrors, two steering mirrors, and one lenses.

    • First periscope mirror (GPM1): TFM-50C080532 (Opto-Sigma)

      • GPM1

    • Second periscope mirror (GPM2): TFM-50C080532 (Opto-Sigma)

      • GPM2

    • First steering mirror (GST1): TFM-50C080532 (Opto-Sigma)

      • GST1

    • Second steering mirror (GST2): TFM-50C080532 (Opto-Sigma)

      • GST2

    • First lens (GLNS1, f=500): LA1380-A-ML (Thorlabs)

      • GLNS1

  • At first, all mirrors were installed. Then the lens was installed not to change beam position.
  • The lens position, i.e. beam profile, was not tuned since the tuning was not so effective without arm cavity locked.
  • In the end of today's work, we installed DC PD (PDA100A2, Thorlabs) after GST2 temporarily. The gain was set to 0 dB.

    • GPD

  • After all, GPT part looks like below.

    • overview

  • The signal was checked like this.

    • Enomoto-kun kindly built model (k1aostmsx) and restarted k1dc0 to register channel for IR and Green DC PD befor the above klog6452.

Next plan

  • Align and balance the BRT and the TMS-VIS.
  • Configure the digital models properly.
  • Detach the remaining white tapes just before closing the chamber; be noted that there are white tapes on the PEEK connectors at the inside of the flanges.
  • Torque completely the bolts which are fixing the upper and the lower base plates.
  • Insert metal gaskets before torquing the ICF203 flanges with Dsub connectors.
  • Install optics after GBS1
  • Install gigE camera
  • Modify MEDM screen
    • Add DC PD and so on.

  • Cable Dsub 15pin for TMS-VIS OpLev.

  • Modify cabling for DC PD.
  • Return plastic box.
  • Install rails in digital rack.
    • They may be necessary under LVDT distributor, geophone distributor, and WHT board.
    • Nagano is not sure it is necessary under HP coil driver.
  • Consider how to cable Dsub cables to QPD.

Wanted!

  • A document for learning how to release or fix the suspended tables (by Uraguchi?).
  • FIVE QPD electronics boards

KAGRA/Subgroups/AOS/TMSX_O3/2018-10-06 (last edited 2018-10-10 10:22:41 by TomotadaAkutsu)