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← Revision 17 as of 2018-04-15 18:23:40 ⇥
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Deletions are marked like this. | Additions are marked like this. |
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2018/2/9 13:30 - | 2018/2/9 13:30 - 15:00 |
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Participants: | Participants: Mark, Hirata, Fabian, Izhizaki, Aso, Takahashi, Ohishi, Shoda, Tanaka, Sato, Okutomi, Akutsu |
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Type-B: ([[TBD|PDF]],[[TBD|MPP]]) * Type-A: * Type-B: |
Type-B: ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|PDF/MPP]]) |
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[X-front] * The delivery of the maraging rod was deley. We didn't go to hunging by the short rod. * Attached magnets to the primary coils and made interconnect cables. * Installed the protection net into the cross tube. * Opened the top chamber. * Installed the frame lock. * Attached the corn bellows onto the bottom of top chamber. * Assembling the side stoppers for SFs. * The optimal load of BF (190kg) is not acceptable for the cryo-payload. Designing an additional FR. [X-end] * Attached the additional vacuum gauge to the top chamber. The pressure was 0.16Pa. * Checked the connection for LVDT on the F0-BF. [Y-end] * The position of IP was corrected so that the torsion mode frequency can be the lowest. * Started the cool down of EYC cryostat on 7th. [Broken blades] * Franco reported about the sample of broken blades. The sample has two different zones. * Checked dimensions of some blades. The width was the same, but the thickness was different. * Dismounted the blade for SRM from the arc jig. * Nikhef can investigate the broken blade too. * No information from the maker. * Asking the companies about the optimal thickness as material for new blades. |
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* Hung the DP by the short rod. * Attached the additional FR and tune the BF again. |
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==== Past week report ==== ==== Plan for coming weeks ==== |
==== Report for week of 2/5 ==== * Mark made two sets of in-air pico splitter cables (each with a triple for IM and a double for BF) for SR2 and SR3. * Fabian, Hirata-san and Kozu-kun worked on cabling and testing the IM pitch/roll/yaw picos, the BF FR and the BF LVDT. The LVDT connections were initially unreliable and Hirata-san had to redo the pins on the coil wires. * Fabian installed ballast masses in the BF. * Mark worked on schedule. * Mark did inventory of the stepper motor drivers (many were not accounted for on the wiki and/or JGWDoc and one is missing) and reserved two for SR3. * We emptied out the external cleanroom in preparation for installing SS sheet. |
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==== Plan for week of 2/13 ==== * No work Monday (建国記念の日の振替休日) * Enzo on vacation * Hirata-san at Mitaka Tue (self-evaluation interview). * Shoda-san at Mitaka. * All others at Kamioka. * - * Build IRM around IM. * Cable/test/adjust IM OSEMs. * Do TFs from IM OSEMs to IM OSEMs, OL pitch/yaw. * Send OSEM parts back to Mitaka so that Shoda-san can assemble them in Mitaka. ==== Plan for week of 2/19 ==== * Enzo back from Tuesday. * Shoda-san at Mitaka. * Hirata-san at Mitaka Mon+Tue (to receive and wash parts). * All others at Kamioka. * - * Lift BF/... section and check total mass and balance. * Cable and test BF picos. * Add section of SS up to SF ring. * Bring in SF. * Hook BF/... section. * Route cables up to under SF. * Check/adjust total mass of BF/... section. ==== Plan for week of 2/26 ==== * Shoda-san at Mitaka. * - * Add Cu segments to SF cap. * Lift SF/... section and check total mass and balance. ==== Vacation Info ==== * Enzo 1/30-2/19. * Fabian 4/2-4/27 vacation (then gone). |
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* Simon and Arai-kun have set up length Oplev for PRM. | |
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* Arai-kin, Miyo-kun, and Ohishi-san(?) will close the tank of PRM in order to release SF GAS. | |
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* Ordered 4 custom-made small bellows for vertical vibration isolation. * Some drawings of the hanging jig parts were not updated. need to reorder some mechanical parts. |
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* OSEM test | |
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* Incidents: | * Incidents: no incident |
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* Type-A: * Type-B: * Type-Bp: |
* Type-A: Crane works * Type-B: No crane work foreseen * Type-Bp: Crane works |
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* OMMT+OSTM: 14,000KJPY * TF(SR, BS, Type-A) replacement blades: 5,000KJPY * TF Yaw fishing rod modification: 300KJPY * Type-A fishing rod CuBe blades: 100KJPY * Mirror disassembly jig for BS: 300KJPY * Damper ring for SR: 4,000KJPY (2 sets) * SR ballast masses: 1,500KJPY * In-Vacuum Cable Assembly: 400KJPY * ETM PI Geophones: 3,000KJPY (6sets including pods) * Maraging rods: 2MJPY (For Type-A and B SF Damper rings. 12 rods) * Feedthrough: 3MJPY (11 more need to be purchased.) |
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* Takahashi: * Okutomi: * Sato: * Ishizaki: * Mark: * Fabian: * Hirata: |
* Takahashi: 13-16 * Okutomi: 13-16 * Sato: 13-16 * Ishizaki: 13-16 * Mark: 13-16 * Fabian: 13-16 * Hirata: 14-16 |
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* Kozu (ICRR): * Arai (ICRR): |
* Kozu (ICRR): 13-16 * Arai (ICRR): 13-16 |
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* Takahashi: * Okutomi: * Sato: * Ishizaki: * Mark: * Fabian: * Hirata: * Enzo: |
* Takahashi: 19 - 23 * Okutomi: 19 - 23 * Sato: 19 - 23 * Ishizaki: 19 - 23 * Mark: 19 - 23 * Fabian: 19 - 23 * Hirata: 21 - 23 * Enzo: 20 - 23 |
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* Kozu (ICRR): | * Kozu (ICRR): 19 - 23 |
Agenda/Minutes of the VIS Meeting on 2018/2/9
2018/2/9 13:30 - 15:00
Participants: Mark, Hirata, Fabian, Izhizaki, Aso, Takahashi, Ohishi, Shoda, Tanaka, Sato, Okutomi, Akutsu
Progress report
Schedule Chart
Type-A : (PDF/MPP)
Type-B: (PDF/MPP)
Type-A (Takahashi)
Past week report
[X-front]
- The delivery of the maraging rod was deley. We didn't go to hunging by the short rod.
- Attached magnets to the primary coils and made interconnect cables.
- Installed the protection net into the cross tube.
- Opened the top chamber.
- Installed the frame lock.
- Attached the corn bellows onto the bottom of top chamber.
- Assembling the side stoppers for SFs.
- The optimal load of BF (190kg) is not acceptable for the cryo-payload. Designing an additional FR.
[X-end]
- Attached the additional vacuum gauge to the top chamber. The pressure was 0.16Pa.
- Checked the connection for LVDT on the F0-BF.
[Y-end]
- The position of IP was corrected so that the torsion mode frequency can be the lowest.
- Started the cool down of EYC cryostat on 7th.
[Broken blades]
- Franco reported about the sample of broken blades. The sample has two different zones.
- Checked dimensions of some blades. The width was the same, but the thickness was different.
- Dismounted the blade for SRM from the arc jig.
- Nikhef can investigate the broken blade too.
- No information from the maker.
- Asking the companies about the optimal thickness as material for new blades.
Plan for coming weeks
- Hung the DP by the short rod.
- Attached the additional FR and tune the BF again.
Type B (Mark)
Report for week of 2/5
- Mark made two sets of in-air pico splitter cables (each with a triple for IM and a double for BF) for SR2 and SR3.
- Fabian, Hirata-san and Kozu-kun worked on cabling and testing the IM pitch/roll/yaw picos, the BF FR and the BF LVDT. The LVDT connections were initially unreliable and Hirata-san had to redo the pins on the coil wires.
- Fabian installed ballast masses in the BF.
- Mark worked on schedule.
- Mark did inventory of the stepper motor drivers (many were not accounted for on the wiki and/or JGWDoc and one is missing) and reserved two for SR3.
- We emptied out the external cleanroom in preparation for installing SS sheet.
Plan for week of 2/13
- No work Monday (建国記念の日の振替休日)
- Enzo on vacation
- Hirata-san at Mitaka Tue (self-evaluation interview).
- Shoda-san at Mitaka.
- All others at Kamioka.
- -
- Build IRM around IM.
- Cable/test/adjust IM OSEMs.
- Do TFs from IM OSEMs to IM OSEMs, OL pitch/yaw.
- Send OSEM parts back to Mitaka so that Shoda-san can assemble them in Mitaka.
Plan for week of 2/19
- Enzo back from Tuesday.
- Shoda-san at Mitaka.
- Hirata-san at Mitaka Mon+Tue (to receive and wash parts).
- All others at Kamioka.
- -
- Lift BF/... section and check total mass and balance.
- Cable and test BF picos.
- Add section of SS up to SF ring.
- Bring in SF.
- Hook BF/... section.
- Route cables up to under SF.
- Check/adjust total mass of BF/... section.
Plan for week of 2/26
- Shoda-san at Mitaka.
- -
- Add Cu segments to SF cap.
- Lift SF/... section and check total mass and balance.
Vacation Info
- Enzo 1/30-2/19.
- Fabian 4/2-4/27 vacation (then gone).
Type-Bp (Shoda)
Past week report
- Simon and Arai-kun have set up length Oplev for PRM.
Plan for coming weeks
- Arai-kin, Miyo-kun, and Ohishi-san(?) will close the tank of PRM in order to release SF GAS.
OMMT & OSTM (Ohishi)
Past week report
- Ordered 4 custom-made small bellows for vertical vibration isolation.
- Some drawings of the hanging jig parts were not updated.
- need to reorder some mechanical parts.
Plan for coming weeks
- OSEM test
Watchdog system (Tanaka)
Past week report
Preparation for assembly of mass products.-->Ongoing.
Adjustment and approval to vendors(Implementation adjustments and approvals for circuit boards.)-->Ongoing.
The scheduled delivery date is 22th Feb(final).-->Adjusting.
Plan for coming weeks
- Preparation for assembly of mass products.
- Adjustment and approval to vendors(Implementation adjustments and approvals for circuit boards.)
Other site works
- Feb 18: Black out of the Mozumi buildings
- 2/26 - 3/9 Construction of the walls to isolate the arms better (for cleanliness)
- 3/12 - 3/16 Installation of the control systems for the large GVs
Safety
- Incidents: no incident
- Foreseen risks
- Type-A: Crane works
- Type-B: No crane work foreseen
- Type-Bp: Crane works
Discussion
- Next FY budget
- OMMT+OSTM: 14,000KJPY
- TF(SR, BS, Type-A) replacement blades: 5,000KJPY
- TF Yaw fishing rod modification: 300KJPY
Type-A fishing rod CuBe blades: 100KJPY
- Mirror disassembly jig for BS: 300KJPY
- Damper ring for SR: 4,000KJPY (2 sets)
- SR ballast masses: 1,500KJPY
- In-Vacuum Cable Assembly: 400KJPY
- ETM PI Geophones: 3,000KJPY (6sets including pods)
- Maraging rods: 2MJPY (For Type-A and B SF Damper rings. 12 rods)
- Feedthrough: 3MJPY (11 more need to be purchased.)
Travel Plans
- Travel (Week of 2/12):
- Takahashi: 13-16
- Okutomi: 13-16
- Sato: 13-16
- Ishizaki: 13-16
- Mark: 13-16
- Fabian: 13-16
- Hirata: 14-16
- Enzo:
- Shoda:
- Ohishi:
- Fujii:
- Tanaka:
- Kozu (ICRR): 13-16
- Arai (ICRR): 13-16
- Travel (Week of 2/19):
- Takahashi: 19 - 23
- Okutomi: 19 - 23
- Sato: 19 - 23
- Ishizaki: 19 - 23
- Mark: 19 - 23
- Fabian: 19 - 23
- Hirata: 21 - 23
- Enzo: 20 - 23
- Shoda:
- Ohishi:
- Fujii:
- Tanaka:
- Kozu (ICRR): 19 - 23
- Arai (ICRR):
Next meeting
On 2018/2/16(Fri)