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Deletions are marked like this. | Additions are marked like this. |
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=== 2. Disassembling in the ATC clean booth at Mitaka [Ohishi] (12th-19th Jan.) === | === 2. Disassembling in the ATC clean booth at Mitaka (12th-19th Jan.) === * Two suspensions were moved from the desiccator at the west end of TAMA and from the vacuum tank. |
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==== Coil bobbin [Takahashi-san, Tatsumi-san] ==== | ==== 4.1 Coil bobbin [Takahashi-san, Tatsumi-san] (Delivered to Kamioka on 4th Feb.) ==== |
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* 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.) ==== |
==== 4.2 Coil winding [Kuwahara-san, and Ushiba-san from U-Tokyo, Lee-san from Okazaki, and Ohishi] (8th-16th Feb.) ==== |
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==== D-sub connector plates [Takahashi-san] ==== | ==== 4.3 D-sub connector plates [Takahashi-san] ==== |
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==== 15pin-9pin changer for coil driver output [Ushiba-san, Ohishi] ==== ==== Screws in replace with Cu screws [Ohishi] ==== |
==== 4.4 15pin-9pin changer for coil driver output [Ushiba-san, Ohishi] ==== ==== 4.5 Screws in replace with Cu screws [Ohishi] ==== |
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=== Jigs === | === 5. Jigs === |
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==== Attach magnets to dummy mirror (4 ; with the diameter of 2mm and the length of 5mm NdFeB magnets) [Tomaru, Yamamoto] | ==== 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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=== Some parts === ==== Pico-motors and PZTs ==== |
=== 6. Some other items === ==== 6.1 Pico-motors and PZTs ==== |
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==== Coil drivers ==== | ==== 6.2 Coil drivers ==== |
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==== Cables ==== | ==== 6.3 Cables ==== |
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=== 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 ==== |
==== 6.4 Mirrors ==== |
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==== Mirror container [Tatsumi-san] ==== | ==== 6.5 Mirror container [Tatsumi-san] ==== |
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=== Stages ==== | ==== 6.6 Stages ==== |
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=== Installation === | === 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>> 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 === 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 suspensions were moved from the desiccator at the west end of TAMA and from the vacuum tank.
- 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