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Size: 2435
Editor: TomotadaAkutsu
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 [[attachment:iris12]]  {{Brt20181003.png}}

20181003

Today's activities

Workers: Akutsu, K. Nagano, Aritomi K. Tanaka, Kita

  • Akutsu cleaned each side of the optical parts to be installed into the chamber (on the BRT) just using ethanol only. So I omitted acetone and First Contact... Anyway, they are
    • CVI's HM-2037-45
    • Thorlabs's HBSY21
    • Opto Sigma's special one: TFMQSP-50.8C10-20-532/1064-0/26D
    • Opto Sigma's SLB-50.8-200NM

    • Need to make a summary page similar to here.

  • Started the alignment of the BRT using the green transmitted beam. It is still on the way.

    • A reference is here

    • Firstly we put two diaphrams; let's call them iris-1 and iris-2. The iris-1 is at the back of the BRT2 lens, while the iris-2 is in front of the BRT2 lens.

    Brt20181003.png

    • BBBB

Next plan

  • Wash an imo-screw for connecting the lens holder and the lower pile.

  • Align and balance the BRT and the TMS-VIS.
  • Configure the digital models properly.

  • Clean the sides of the optics to be installed into the vacuum chamber. (Ethanol+Acetone wiping with vectra alpha, then First Contact.) See here.

  • 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.
  • Check horizontal actuation
  • Calibrate LVDT again
  • Put calibration factor of Geophones
  • Install Tome-Kanagu for Dsub in DAC0 port #4
  • Put tags to cables
  • Align BRT
  • Start to install GPT part
  • Damping of TMS-VIS

Wanted!

  • Tester!! lend from DGS or PEM??
  • M8 eyebolts for managing the dummy weight plates...
  • First contact to clean the side diameter of the optics.
  • Need a signal generator for LVDTs
  • A document for learning how to release or fix the suspended tables (by Uraguchi?).
  • Cable tags
  • IR mirrors (4 PYD-20, 3 PYD-10)
  • Tome-Kanagu for Dsub
  • Power taps
  • ONE DAC PORT!!!!

KAGRA/Subgroups/AOS/TMSX_O3/2018-10-03 (last edited 2018-10-04 12:24:02 by KojiNagano)