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= Type-A Review on 2016/8/10 = [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5516]] |
Task list
http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4792
Type-A Review on 2016/8/10
http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5516
Type-A Meeting on 2016/8/9
2016/8/9 13:00 - 14:00 @Room210
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assy. (Ishizaki)
- Made the model of EQ stop.
- Calculated coupling to the yaw mode assuming asymmetry of 1mm and 3mm. The result was linear.
- Updating the calculation (Next by 8/10).
- Additional 3 sets have not been extracted yet.
- Delay.
- The 6th set will be finished on 10th.
- Design of frame and jigs was progressed.
- We consulted with a company on procurement.
- Measured responce of LVDT sample. The signal was linear in 20mm range.
- Found phase noise at the level of 10^-6m/rtHz.
- Bracket for prototype is necessary.
- Made 2D drawings for the bidding.
- Tolerance and surface accuracy should be indicated.
- The tolerance for the rods with the same length must be less than 0.2mm.
- The specification document and drawings should be sent by the 12th.
- Height of base was 56mm. Changed to 50mm.
- The length of Hook was reduced.
- The document will be revised by the review.
- Total 20 system.
- 7 interfaces are necessary.
Next meeting: 2016/8/16 13:00
Type-A Meeting on 2016/8/1
2016/8/1 13:00 - 16:00 @Room210
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assy. (Ishizaki)
- Made the model of EQ stop and pre-isolator.
- Each filter is placed at the side stopper.
- The IP is put on the top plate directly at present, but a gap is necessary.
- Take account of stretch of the wires.
- Introduction of coupling to the yaw mode was wrong in the last calculation.
- Updating the calculation.
- The lighting is made by the LED inside the booth.
- The assembly work will be started on 30th August at the KAGRA site.
- Additional 3 sets have not been extracted yet.
- The 5th set was finished.
- The thermal process for the blades was finished.
- The plate for damper is independent of EQ stop frame.
- Each LVDT has position adjustment.
- Set the test bench for LVDT sample at ATC lab.
- Making 2-pin lemo cables.
- A summer student will join to the test.
- Made 2D drawings for the bidding.
- The date for the announce of bidding is the 17th August.
- The specification document and drawings should be fixed by the 10th.
- Tested connection and lift down of the EQ stop prototype on 27th July.
- Set at 5mm under of each filter.
- The shape of jigs will be modified with thick base.
- The bottom should be a breadboard with 50mm interval.
- The first draft was shown and discussed.
- The height setting for each filter is important.
Next meeting: 2016/8/9 13:00
Type-A Meeting on 2016/7/26
2016/7/26 13:00 - 14:20 @Room210
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assy. (Ishizaki)
- The modeling of EQ stop was almost finished.
- The model of chamber will be added to it.
- Calculated the effect due to actuation point for BF.
- Noise will be induced to the actuators taking account of measured LVDT.
- Design of suspended booth was shown.
- The lighting is OK?
- Decision on the working place is under negosiation.
- From August 30.
- Additional 3 sets will be taken by the end of July.
- The 4th set is on going.
- Ordered.
- Blades are in the thermal process.
- Made drawings for LVDT prototype.
- Make drawings for EQ stop side.
- Set the sample from VIRGO in the 20m lab.
- Making connector cables.
- Micrometer stage and some jigs are necessary.
- Made 3D model and 2D drawings.
- Bottom support for the dummy payload is necessary.
- Gap of the side stopper should be 10mm.
- Adjustment of top ring position is not necessary.
- Outer diameter of the plate was reduced on 20th.
- The shape of jigs was modified with 30mm in height.
- Gutter for cables is necessary.
- The height was reduced.
- This task was postponed.
- The smallest bolt size was M3.
Next meeting: 2016/8/1 13:00
Type-A Meeting on 2016/7/19
2016/7/19 13:00 - 15:00 @Room210
Participants: Takahashi, Ishizaki, Sato, Okutomi(Skype)
Minutes
- 0-1 Assy, (Ishizaki)
- The plate for BF is in the center of cross tube.
- Calculate the effect due to actuation point for BF.
- Remained horizontal deviation between the top flange on the cryostat and the top chamber was 1-4mm.
- The assembly work was rescheduled. From the end of August at the site.
- Additional 3 sets will be taken from NM1 in TAMA by the end of July.
- ACCs will be calibrated at the site.
- 3 sets were finished.
- Blades are in the thermal process.
- Samples of LVDT have been delivered from VIRGO.
- Design work is going.
- Made 3D model and some 2D drawings.
- Guide for lift down is necessary.
- Outer diameter of the plate will be reduced on 20th.
- Length of the present lead cable is too short. Longer ones will be prepared for actual setup.
- Rod for cryo-payload should be lift down at beginning and fixed on the protection net temporally.
- Made drawings. The present design is too tall.
- Confirm the height of mounted items.
- Check the small bolts size to decide the mesh of net.
Next meeting: 2016/7/26 13:00
Type-A Meeting on 2016/7/12
2016/7/12 11:00 - 12:30 @Kashiwa
Participants: Takahashi, Ishizaki(Skype), Sato, Okutomi
Minutes
- 0-2 Simulation (Okutomi)
- The frequency shift was due to damping model.
- Setting for GAS filters was corrected.
- Going BF damping simulation by manual tuning.
- Result will be reported by the VIS meeting.
- Horizontal position of the top flange on the cryostat was different from the center of the top chamber by 25mm along beam axis.
- The place should be in the center room of KAGRA considering DGS setup.
- 6 sets of ACC were measured.
- Additional 3 sets will be taken from NM1 in TAMA on 14th.
- Tube for the spot cooler was set.
- 2 sets were finished.
- Cutting of 22 blades was finished.
- Original design from VIRGO does not fit to the space around BF.
- The bending point is higher than the suspension point.
- Made outer shape of end plate.
- Assembling of the EQ stop prototype was started.
- Thin dummy weights were prepared.
- I-bolts on the plate were interfered with connection rods.
- Outer diameter of the stop plate was larger than inner diameter of the frame lock.
- 3 sensors were attached to the plate for the prototype test.
- Circular type weight is suitable for combined dummy load.
- Okutomi will send a cartoon soon.
- Protection for falling items is necessary. Check the small bolts size to decide the mesh of net.
- Discuss on evacuation of the chamber.
Next meeting: 2016/7/19 13:00
Type-A Meeting on 2016/7/5
2016/7/5 13:00 - 14:00 @Kamioka
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-2 Simulation (Okutomi)
- The frequency shift might be due to damping model.
- Matlab model was remade.
- Sensors and actuators were added to the BF stage.
- The booth will be ready in December.
- The schedule was shifted to December.
- From 8th July, presence on 11th.
- The place should be considered again.
- 5 sets of ACC were measured.
- Cutting of 12 blades was finished.
- Will be started in September.
- The first setup and its procedure were shown.
- Thin dummy weight and short hoock should be prepared.
- Some cap screws on stop plates should be replaced to stop screws.
- Under cable connection.
- Interferometer test was canceld.
- The EQ stop and the dummy payload should be ordered together in August.
- Situation of the Y-end was investigated.
- Maximum box width, which can go through the tunnel, was 1.5m.
- Access road from Mozumi entrance was improved.
- Ask CRY number of cables.
Next meeting: 2016/7/12 11:00
Type-A Meeting on 2016/6/28
2016/6/28 13:00 - 14:30 @The 4th meeting room
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assembly model (Ishizaki)
- Made the test setup.
- No progress. The results will be reported in the next VIS meeting.
- Present design: The booth is hung from the ceiling.
- From 8th July, presence on 11th.
- Working space: The 20m lab was arranged on 27th.
- Assembly of FR and measurement: 1 set was finished.
- Cutting: 6 blades by July + 6 blades by Sep.
- Device: It is difficult to put the devices at the center of suspension point.
- Modeling: 3D model for the test setup was built.
- Frame lock, extension rods, adjusters were delivered.
- Hoist's tool will be necessary.
- Test items related to the frame design have high priority. Target date is 22th July.
- Bases and shims were delivered.
- Plate additional machining: Delivery on 29th.
- Circuit: LED box was made. Cabling has not been applied yet.
- Cartoon: Okutomi should send to Ishizaki soon!
- Test plan is made parallel with test work. Check the list of test items.
- Situation of the site will be checked in 5-7th July.
- Electric crawler is limitted, for example, for 200kg load.
- Number of cables: CRY will decide it by the end of June.
Next meeting: 2016/7/5 13:00
Type-A Meeting on 2016/6/21
2016/6/21 13:00 - 14:00 by Skype
Participants: Takahashi, Ishizaki, Sato
Minutes
- 0-1 Assembly model (Ishizaki)
- Made the test setup.
- Deadline: The end of June
- Work: From 8th July, presence on 11th.
- Make working space in the 20m lab on 27th June.
- Assembly of FR and measurement: by August for 6 sets.
- Size: 13mm, 72PSC for each
- Cutting: 6 blades by July + 6 blades by Sep.
- Device: The last one was too small, actually about 125mm. Design for vertical as well.
- Modeling: 3D model for the test setup was build.
- Frame lock: Delivered by 24th.
- Other parts (rod, adjuster, bolts) will be ordered.
- Base: Making in ATC.
- Plate additional machining: Ordered.
- Circuit: LED will be tested.
- Cartoon: Okutomi should send to Ishizaki soon!
- Mirror holder: Refer the mirror box for PR.
- Test plan: Check FR for 2 BFs.
- Number of cables: Thermocouples are added. Ask Tomaru total number.
Next meeting: 2016/6/28 13:00
Type-A Meeting on 2016/6/14
2016/6/14 13:00 - 15:00 @ Room 210
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assembly model (Ishizaki)
- Step: From EQ stop, next with chamber.
- Problem: Conversion to Simulink was ok. The structure of control has a problem in Matlab. Reconstructing now.
- Space: Make working space in the 20m lab.
- Design: 5 blades are used for 200kg load.
- Device: Asking design of LVDT-Act. to VIRGO. The device is located at the center of mass.
- Structure analysis: Two cases were calculated. Share stress was 1/6 of limit, and principal stress was 1/7 of limit respectively in the maximum case.
- Modeling: Making with consideration of procedure and tools.
- Frame lock: Maximum stress was 160MPa with thickness of 30mm (limit 180MPa).
- Position: Inner side of the stage. Need to addtional machining to the EQ stop plate.
- Electronics: Circuit is simple in the test (handmade).
- Condition: 25cm mirror, alignment by moving mass. Make a cartoon.
- Actuation: Length control is necessary? Check PZT actuator.
- Test plan: Prepare for 2 sets of release sensors. Check FR for 2 BFs.
Next meeting: 2016/6/21 13:00