Size: 1532
Comment:
|
Size: 4577
Comment:
|
Deletions are marked like this. | Additions are marked like this. |
Line 1: | Line 1: |
== iKAGRA ETM suspension preparation; current status == | == iKAGRA ETM suspension preparation log == |
Line 3: | Line 3: |
==== Schedule ==== * 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 |
=== 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 |
Line 10: | Line 9: |
==== 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 ==== We have 4 pico motor except for x-axis (the direction of the light ) |
=== 2. Disassembling in the ATC clean booth at Mitaka (12th-19th Jan.) === * One suspensions was moved from the desiccator at the west end of TAMA and the other was moved 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. <<BR>> 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.<<BR>> Takahashi-san ordered similar screws. === 4. New parts preparation === ==== 4.1 Coil bobbin (Delivered to Kamioka on 4th Feb.) ==== [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. * Wind 13 times / 1 layer. ==== 4.2 Coil winding (8th-16th Feb.) ==== [Kuwahara-san, and Ushiba-san from U-Tokyo, Lee-san from Okazaki, and Ohishi] * 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 (8th Feb.) ==== [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 === ==== 5.1 Magnet and standoff fixture jig ==== * We used ==== 5.2 Dock (mirror hanging jig) ==== (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 ) |
Line 33: | Line 51: |
==== coil driver ==== | ==== 6.2 Coil drivers ==== |
Line 35: | Line 53: |
==== cables ==== | ==== 6.3 Cables ==== |
Line 37: | Line 55: |
==== Assembling [Tomaru, Ohishi, Yamamoto]==== | ==== 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. ==== 6.6 Stages ==== * Condensation * Vacuum compatibility? === 7. Assembling === [Tomaru-san, Ohishi, Yamamoto-san] <<BR>> |
Line 40: | Line 69: |
==== Hanging ==== | === 8. Hanging === [Yamamoto-san, Uchiyama-san, Doi-san, and Ohishi] <<BR>> |
Line 43: | Line 73: |
==== Transfer Function Measurement ==== | === 9. Transfer Function Measurement (8th-16th Feb.) === [Shoda-san, Hayama-san, Ushiba-san, Kuwahara-san, Kokeyama-san, Kuwahara-san, Tomaru-san, Lee-san, and Ohishi] * First Shoda-san kindly made a simple model under PR2 digital system for this test. * === 10. Preparation of End area and suspension transportation to the End === [Kimura-san, Sawada-san, Tomaru-san, Prof. Suzuki, Telada-san, Uchiyam-san] * Uchiyama-san bought many things we need at the end area and KEK member transported them and cleaned the work area. === 11. Installation [Akutsu-san, Uchiyama-san, Yamamoto-san, Miyoki-san, and Ohishi ] (15th-17th Feb.) === ==== 11.1 Suspension installation ==== *Suspension was installed by Miyoki-san, Akutsu-san and Yamamoto-san on 15th Feb at the Yend. *Suspension and mirrors were installed by at the Xend. * ==== 11.2 Mirror 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.)
- One suspensions was moved from the desiccator at the west end of TAMA and the other was moved 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 (Delivered to Kamioka on 4th Feb.)
[Takahashi-san, Tatsumi-san]
- 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.
- Wind 13 times / 1 layer.
4.2 Coil winding (8th-16th Feb.)
[Kuwahara-san, and Ushiba-san from U-Tokyo, Lee-san from Okazaki, and Ohishi]
- 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 (8th Feb.)
[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
5.1 Magnet and standoff fixture jig
- We used
5.2 Dock (mirror hanging jig)
(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 (8th-16th Feb.)
[Shoda-san, Hayama-san, Ushiba-san, Kuwahara-san, Kokeyama-san, Kuwahara-san, Tomaru-san, Lee-san, and Ohishi]
- First Shoda-san kindly made a simple model under PR2 digital system for this test.
10. Preparation of End area and suspension transportation to the End
[Kimura-san, Sawada-san, Tomaru-san, Prof. Suzuki, Telada-san, Uchiyam-san]
- Uchiyama-san bought many things we need at the end area and KEK member transported them and cleaned the work area.
11. Installation [Akutsu-san, Uchiyama-san, Yamamoto-san, Miyoki-san, and Ohishi ] (15th-17th Feb.)
11.1 Suspension installation
- Suspension was installed by Miyoki-san, Akutsu-san and Yamamoto-san on 15th Feb at the Yend.
- Suspension and mirrors were installed by at the Xend.