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== iKAGRA ETM suspension Preparation; Current status == | == iKAGRA ETM suspension preparation log == |
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==== Schedule ==== * 12th Jan- (2 weeks) Disassembling and Washing (favorable) * 25th Jan - (2 weeks) Assembling and Hanging with dummy mirror * 1th Feb- coil winding, transportation to the End, installation test * 7th Feb- check * 15th installation |
=== 1. 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 |
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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 ==== |
=== 2. Disassembling in the ATC clean booth at Mitaka (12th-19th Jan.) === * Two nuts stuck. Hirata-san removed them. * A Cu screw stuck. Hirata-san removed it. === 3. 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. === 4. New parts preparation === ==== 4.1 Coil bobbin [Takahashi-san, Tatsumi-san] (Delivered to Kamioka on 4th Feb.) ==== [[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. ==== 4.2 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. ==== 4.3 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. ==== 4.4 15pin-9pin changer for coil driver output [Ushiba-san, Ohishi] ==== ==== 4.5 Screws in replace with Cu screws [Ohishi] ==== * Replaced all Cu screws to stainless screws. Magnetism problem was indicated. === 5. Jigs === * We used CLIO magnet fixture jigs. ==== Attach magnets to dummy mirror (4 ; with the diameter of 2mm and the length of 5mm NdFeB magnets) [Tomaru-san, Yamamoto-san] ==== |
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==== coil driver ==== | === 6. Some other items === ==== 6.1 Pico-motors and PZTs ==== We have 4 pico-motors except for x-axis (the direction of the light ) y, z, pitch, yaw ==== 6.2 Coil drivers ==== We use KAGRA coil driver; we need to cheek its performance. ==== 6.3 Cables ==== |
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==== cables ==== ==== Assembling ==== On 21th, suspension frame, security frame, xy stages completed [Tomaru] |
==== 6.4 Mirrors ==== Two TAMA PRM mirrors (with about 50% and 90% reflectivities each, resultant contrast becomes 96%) were delivered to Kamioka on 12th Feb. ==== 6.5 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. |
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==== Hanging ==== | ==== 6.6 Stages ==== * Condensation * Vacuum compatibility? === 7. Assembling === [Tomaru-san, Ohishi, Yamamoto-san] <<BR>> On 21th, suspension frame, security frame, xy stages completed === 8. Hanging === [Yamamoto-san, Uchiyama-san, Doi-san, and Ohishi] <<BR>> |
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==== Transfer Function Measurement ==== | === 9. Transfer Function Measurement === ==== [Shoda-san, Hayama-san, Ushiba-san, Kuwahara-san, Kokeyama-san, Kuwahara-san, Tomaru-san, Lee-san, and Ohishi] ==== === 10. Preparation of End area and suspension transportation to the End [Prof. Kimura, Sawada-san, Tomaru-san(KEK),] === KEK === 11. Installation === |
iKAGRA ETM suspension preparation log
1. 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
2. Disassembling in the ATC clean booth at Mitaka (12th-19th Jan.)
- Two nuts stuck. Hirata-san removed them.
- A Cu screw stuck. Hirata-san removed it.
3. 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.
4. New parts preparation
4.1 Coil bobbin [Takahashi-san, Tatsumi-san] (Delivered to Kamioka on 4th Feb.)
- 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.
4.2 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.
4.3 D-sub connector plates [Takahashi-san]
- 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.
4.4 15pin-9pin changer for coil driver output [Ushiba-san, Ohishi]
4.5 Screws in replace with Cu screws [Ohishi]
- Replaced all Cu screws to stainless screws. Magnetism problem was indicated.
5. Jigs
- We used CLIO magnet fixture jigs.
Attach magnets to dummy mirror (4 ; with the diameter of 2mm and the length of 5mm NdFeB magnets) [Tomaru-san, Yamamoto-san]
6. Some other items
6.1 Pico-motors and PZTs
- We have 4 pico-motors except for x-axis (the direction of the light ) y, z, pitch, yaw
6.2 Coil drivers
- We use KAGRA coil driver; we need to cheek its performance.
6.3 Cables
6.4 Mirrors
- Two TAMA PRM mirrors (with about 50% and 90% reflectivities each, resultant contrast becomes 96%) were delivered to Kamioka on 12th Feb.
6.5 Mirror container [Tatsumi-san]
- Some plates once used for transportation of MC mirrors were used
- Two places of the container were cut to avoid standoffs.
6.6 Stages
- Condensation
- Vacuum compatibility?
7. Assembling
[Tomaru-san, Ohishi, Yamamoto-san]
- On 21th, suspension frame, security frame, xy stages completed
8. Hanging
[Yamamoto-san, Uchiyama-san, Doi-san, and Ohishi]
- Hanging jig preparation
9. Transfer Function Measurement
[Shoda-san, Hayama-san, Ushiba-san, Kuwahara-san, Kokeyama-san, Kuwahara-san, Tomaru-san, Lee-san, and Ohishi]
10. Preparation of End area and suspension transportation to the End [Prof. Kimura, Sawada-san, Tomaru-san(KEK),]
- KEK