Differences between revisions 14 and 47 (spanning 33 versions)
⇤ ← Revision 14 as of 2016-01-22 15:40:00 →
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Editor: NaokoOhishi
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← Revision 47 as of 2016-02-23 13:16:01 → ⇥
Size: 3396
Editor: NaokoOhishi
Comment:
Deletions are marked like this. Additions are marked like this.
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== iKAGRA ETM suspension preparation; current status == == iKAGRA ETM suspension preparation log ==
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 * 12th Jan- (2 weeks) Disassembling and Washing (favorable)
 * 25th Jan - (2 weeks) Assembling and Hanging with dummy mirror
 * 1th Feb- (1 week) coil winding,
 * 7th Feb- (1 week) check and transportation to the End and installation test
 * 15th Feb- installation		  * 12th Jan- (2 weeks) Disassembling, Washing, and transportation
 * 25th Jan - (2 weeks) Assembling and Test Hanging with an Al dummy mirror
 * 7th Feb- (1 week) coil winding, measurement of transfer function, transportation to the End area and installation test
 * 15th Feb- (1 week)installation
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==== Disassembling at Mitaka [Ohishi] ====
  finished. (12th-19th)
 [problem]
  * 2 nuts stuck: solved by Hirata-san
  * A Cu screw stuck: solved by Hirata-san
==== Washing [Hirata-san] ====
   most of the parts were washed.
 [problem]
  * ultra sonic washer broken 20th
  ordered on 22th(Fri) will be arrive at Mitaka on 26th(Tue)
  * 8 screws for adjusting the IM holding plate was dirty
   Solution: order new screws (not ordered yet)
==== Missing parts ====
 * coil bobbin [Takahashi-san]
 * coil winding [students of Ando-lab]
 * D-sub fixture plates [Takahashi-san]
 * mirror container [Tatsumi-san]
 * magnets for dummy mirror (4 ; 2-phi-L-5mm Nd magnets) [Ohishi]
 * some screws in replace with Cu screws [Ohishi]
  
==== pico-motors and PZTs ====		 ==== Disassembling in the ATC clean booth at Mitaka [Ohishi] (12th-19th Jan.) ====
  * Two nuts stuck. Hirata-san removed them.
  * A Cu screw stuck. Hirata-san removed it.
==== Washing and transportation to Kamioka [Hirata-san] ====
  * The ultra sonic washer at ATC was broken on 20th Jan.
  A new washer was ordered on 22th(Fri) and arrived at Mitaka on 25th(Mon).
  * Eight screws for adjusting the IM holding plate was dirty.
  Takahashi-san ordered similar screws.
==== New parts ====
 * Coil bobbin [Takahashi-san, Tatsumi-san]
  [[http://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0047/T1604741/001/Coil_Preparation_2016.pdf|coil bobbin]]
  * The outer diameter of the coil has been changed from 14.2mm to 14.5mm.
  * Due to this change, the number of winding becomes 39 from 41.
  * Delivered to Kamioka on 4th Feb.
 * Coil winding [Kuwahara-san, and Ushiba-san from U-Tokyo, Lee-san from Okazaki, and Ohishi](8th-16th Feb.)
  * We used coil winding machine.
  * Lead wires from the bobbin to Dsub connector were too short (20cm). The length must be 40cm or more.
  * At the end of the lead wires, D-sub pins are swaged. We have run short of pins and waiting for delivery on 29th Feb(Mon).
  * Peeling off the coating of wires longer than the length of those pins make the wire broken easily.
 * D-sub connector plates [Takahashi-san]
 [[attachment:D-sub_connector_plate.pdf|{{attachment:D-sub_connector_plate.pdf||width=600}}]]<<BR>>
  * M3 holes were changed to phi3.1 holes. Yamamoto-san used drilling machine at Kamioka surface office.
  * One must be careful about the pillar position in order to attach this plate to the suspension.
 *15pin-9pin changer for coil driver output [Ushiba-san, Ohishi]
 * Mirror container [Tatsumi-san]
  [[attachment:MirrorContainer.pdf|{{attachment:MirrorContainer.pdf||width=600}}]]<<BR>>
  * Some plates once used for transportation of MC mirrors were used
  * Two places of the container were cut to avoid standoffs.
 * Attach magnets to dummy mirror (4 ; 2-phi-L-5mm Nd magnets) [Tomaru, Yamamoto]
  Used magnet fixture jigs of CLIO.
 * Screws in replace with Cu screws [Ohishi]
 [problem] replaced all Cu screws to stainless. Magnetism problem was indicated.
==== Pico-motors and PZTs ====
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==== coil driver ==== ==== Coil driver ====
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==== cables ==== ==== Cables ====
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==== Assembling [Tomaru, Ohishi, Yamamoto] ==== ==== Assembling [Tomaru-san, Ohishi, Yamamoto-san] ====
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==== Transportation to the End ==== ==== Transportation to the End [Prof. Kimura, Sawada-san, Tomaru-san(KEK),]====
 KEK
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==== Mirrors ====
 Two TAMA PRM mirrors (with about 50% and 90% reflectivities each, resultant contrast becomes 96%) were delivered to Kamioka on 12th Feb.
 
==== Stages ====
 * Condensation
 * Vacuum compatibility?

iKAGRA ETM suspension preparation log

Schedule

  • 12th Jan- (2 weeks) Disassembling, Washing, and transportation
  • 25th Jan - (2 weeks) Assembling and Test Hanging with an Al dummy mirror
  • 7th Feb- (1 week) coil winding, measurement of transfer function, transportation to the End area and installation test
  • 15th Feb- (1 week)installation

Disassembling in the ATC clean booth at Mitaka [Ohishi] (12th-19th Jan.)

  • Two nuts stuck. Hirata-san removed them.
  • A Cu screw stuck. Hirata-san removed it.

Washing and transportation to Kamioka [Hirata-san]

  • The ultra sonic washer at ATC was broken on 20th Jan. A new washer was ordered on 22th(Fri) and arrived at Mitaka on 25th(Mon).
  • Eight screws for adjusting the IM holding plate was dirty. Takahashi-san ordered similar screws.

New parts

  • Coil bobbin [Takahashi-san, Tatsumi-san]

    • coil bobbin

    • The outer diameter of the coil has been changed from 14.2mm to 14.5mm.
    • Due to this change, the number of winding becomes 39 from 41.
    • Delivered to Kamioka on 4th Feb.
  • Coil winding [Kuwahara-san, and Ushiba-san from U-Tokyo, Lee-san from Okazaki, and Ohishi](8th-16th Feb.)
    • We used coil winding machine.
    • Lead wires from the bobbin to Dsub connector were too short (20cm). The length must be 40cm or more.
    • At the end of the lead wires, D-sub pins are swaged. We have run short of pins and waiting for delivery on 29th Feb(Mon).
    • Peeling off the coating of wires longer than the length of those pins make the wire broken easily.
  • D-sub connector plates [Takahashi-san]

    attachment:D-sub_connector_plate.pdf

    • M3 holes were changed to phi3.1 holes. Yamamoto-san used drilling machine at Kamioka surface office.
    • One must be careful about the pillar position in order to attach this plate to the suspension.
  • 15pin-9pin changer for coil driver output [Ushiba-san, Ohishi]
  • Mirror container [Tatsumi-san]

    • attachment:MirrorContainer.pdf

    • Some plates once used for transportation of MC mirrors were used
    • Two places of the container were cut to avoid standoffs.
  • Attach magnets to dummy mirror (4 ; 2-phi-L-5mm Nd magnets) [Tomaru, Yamamoto]
    • Used magnet fixture jigs of CLIO.
  • Screws in replace with Cu screws [Ohishi] [problem] replaced all Cu screws to stainless. Magnetism problem was indicated.

Pico-motors and PZTs

  • We have 4 pico-motors except for x-axis (the direction of the light ) y, z, pitch, yaw

Coil driver

  • We use KAGRA coil driver; we need to cheek its performance.

Cables

Assembling [Tomaru-san, Ohishi, Yamamoto-san]

  • On 21th, suspension frame, security frame, xy stages completed

Hanging

  • Hanging jig preparation

Transfer Function Measurement

==== Transportation to the End [Prof. Kimura, Sawada-san, Tomaru-san(KEK),]====

  • KEK

Mirrors

  • Two TAMA PRM mirrors (with about 50% and 90% reflectivities each, resultant contrast becomes 96%) were delivered to Kamioka on 12th Feb.

Stages

  • Condensation
  • Vacuum compatibility?

Installation

KAGRA/Subgroups/VIS/Type-C (last edited 2020-04-30 12:05:11 by KousekiMiyo)