• KAGRA
• Subgroups
• VIS
• TypeA

Task list

http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4792

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.
  0-2 Simulation (Okutomi)
  • Calculated the effect due to actuation point for BF.
  • Noise will be induced to the actuators taking account of measured LVDT.
  1-1 Clean booth (FCL)
  • Design of suspended booth was shown.
  • The lighting is OK?
  3-2 Assembly of TF+IP (Sato)
  • Decision on the working place is under negosiation.
  • From August 30.
  3-5 ACC preparation (Sato)
  • Additional 3 sets will be taken by the end of July.
  4-2,3 Standard filter (Hirata)
  • The 4th set is on going.
  4-5 Procurement of damper magnet
  • Ordered.
  5-1 Manufacturing of blade (Takahashi)
  • Blades are in the thermal process.
  5-6 Design of damper (Sato)
  • Made drawings for LVDT prototype.
  • Make drawings for EQ stop side.
  5-8 Test of LVDT (Okutomi)
  • Set the sample from VIRGO in the 20m lab.
  • Making connector cables.
  • Micrometer stage and some jigs are necessary.
  6-1 Design of EQ stop (Ishizaki)
  • 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.
  6-3 Test of prototype (Ishizaki)
  • Outer diameter of the plate was reduced on 20th.
  6-4 Design of release sensor (Sato)
  • The shape of jigs was modified with 30mm in height.
  • Gutter for cables is necessary.
  8-1 Design of dummy payload (Okutomi, Ishizaki)
  • The height was reduced.
  9-3 Cable assembly (Sato)
  • This task was postponed.
  9-6 Protection net (Okutomi)
  • 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.
  0-2 Simulation (Okutomi)
  • Calculate the effect due to actuation point for BF.
  2-3 Setting of cross chamber (VAC)
  • Remained horizontal deviation between the top flange on the cryostat and the top chamber was 1-4mm.
  3-2 Assembly of TF+IP (Sato)
  • The assembly work was rescheduled. From the end of August at the site.
  3-5 ACC preparation (Sato)
  • Additional 3 sets will be taken from NM1 in TAMA by the end of July.
  • ACCs will be calibrated at the site.
  4-2,3 Standard filter (Hirata)
  • 3 sets were finished.
  5-1 Manufacturing of blade (Takahashi)
  • Blades are in the thermal process.
  5-6 Design of damper (Sato)
  • Samples of LVDT have been delivered from VIRGO.
  • Design work is going.
  6-1 Design of EQ stop (Ishizaki)
  • Made 3D model and some 2D drawings.
  • Guide for lift down is necessary.
  6-3 Test of prototype (Ishizaki)
  • Outer diameter of the plate will be reduced on 20th.
  6-4 Design of release sensor (Sato)
  • Length of the present lead cable is too short. Longer ones will be prepared for actual setup.
  7-2 Long Maraging rod (Takahashi)
  • Rod for cryo-payload should be lift down at beginning and fixed on the protection net temporally.
  8-1 Design of dummy payload (Okutomi, Ishizaki)
  • Made drawings. The present design is too tall.
  • Confirm the height of mounted items.
  9-6 Protection net (Okutomi)
  • 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.
  2-3 Setting of cross chamber (VAC)
  • Horizontal position of the top flange on the cryostat was different from the center of the top chamber by 25mm along beam axis.
  3-2 Assembly of TF+IP (Sato)
  • The place should be in the center room of KAGRA considering DGS setup.
  3-5 ACC preparation (Sato)
  • 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.
  4-2,3 Standard filter (Hirata)
  • 2 sets were finished.
  5-1 Manufacturing of blade (Takahashi)
  • Cutting of 22 blades was finished.
  5-6 Design of damper (Sato)
  • Original design from VIRGO does not fit to the space around BF.
  • The bending point is higher than the suspension point.
  6-1 Design of EQ stop (Ishizaki)
  • Made outer shape of end plate.
  6-3 Test of prototype (Ishizaki)
  • 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.
  6-4 Design of release sensor (Sato)
  • 3 sensors were attached to the plate for the prototype test.
  8-1 Design of dummy payload (Okutomi, Ishizaki)
  • Circular type weight is suitable for combined dummy load.
  • Okutomi will send a cartoon soon.
  9-5 Installation
  • 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.
  1-1 Clean Booth (FCL)
  • The booth will be ready in December.
  2-1 Setting of top chamber (VAC)
  • The schedule was shifted to December.
  2-3 Setting of cross chamber (VAC)
  • From 8th July, presence on 11th.
  3-2 Assembly of TF+IP (Sato)
  • The place should be considered again.
  3-5 ACC preparation (Sato)
  • 5 sets of ACC were measured.
  5-1 Manufacturing of blade (Takahashi)
  • Cutting of 12 blades was finished.
  5-2 Assembly of BF (Hirata)
  • Will be started in September.
  6-3 Test of prototype (Ishizaki)
  • 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.
  6-4 Design of release sensor (Sato)
  • Under cable connection.
  8-1 Design of dummy payload (Okutomi, Ishizaki)
  • Interferometer test was canceld.
  • The EQ stop and the dummy payload should be ordered together in August.
  9-2 Transportation to 2F (Takahashi, Ishizaki)
  • 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.
  9-3 Cable assembly (Sato)
  • 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.
  0-2 Simulation (Okutomi)
  • No progress. The results will be reported in the next VIS meeting.
  1-1 Clean Booth (FCL)
  • Present design: The booth is hung from the ceiling.
  2-3 Setting of cross chamber (VAC)
  • From 8th July, presence on 11th.
  3-5 ACC preparation (Sato)
  • Working space: The 20m lab was arranged on 27th.
  4-3 Standard filter (Hirata)
  • Assembly of FR and measurement: 1 set was finished.
  5-1 Manufacturing of blade (Takahashi)
  • Cutting: 6 blades by July + 6 blades by Sep.
  5-6 Design of damper (Sato)
  • Device: It is difficult to put the devices at the center of suspension point.
  6-1 Design of EQ stop (Ishizaki)
  • Modeling: 3D model for the test setup was built.
  6-3 Test of prototype
  • 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.
  6-4 Design of release sensor (Sato)
  • Bases and shims were delivered.
  • Plate additional machining: Delivery on 29th.
  • Circuit: LED box was made. Cabling has not been applied yet.
  8-1 Design of dummy payload (Okutomi, Ishizaki)
  • Cartoon: Okutomi should send to Ishizaki soon!
  9-1 Establishment of procedure (Takahashi, Okutomi)
  • Test plan is made parallel with test work. Check the list of test items.
  9-2 Transportation to 2F (Takahashi, Ishizaki)
  • Situation of the site will be checked in 5-7th July.
  • Electric crawler is limitted, for example, for 200kg load.
  9-3 Cable assembly (Sato)
  • 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.
  0-2 Simulation (Okutomi)
  • Deadline: The end of June
  2-3 Setting of cross chamber (VAC)
  • Work: From 8th July, presence on 11th.
  3-5 ACC preparation (Sato)
  • Make working space in the 20m lab on 27th June.
  4-3 Standard filter (Hirata)
  • Assembly of FR and measurement: by August for 6 sets.
  4-5 Procurement of magnets (Takahashi)
  • Size: 13mm, 72PSC for each
  5-1 Manufacturing of blade (Takahashi)
  • Cutting: 6 blades by July + 6 blades by Sep.
  5-6 Design of damper (Sato)
  • Device: The last one was too small, actually about 125mm. Design for vertical as well.
  6-1 Design of EQ stop (Ishizaki)
  • Modeling: 3D model for the test setup was build.
  6-3 Test of prototype
  • Frame lock: Delivered by 24th.
  • Other parts (rod, adjuster, bolts) will be ordered.
  6-4 Design of release sensor (Sato)
  • Base: Making in ATC.
  • Plate additional machining: Ordered.
  • Circuit: LED will be tested.
  8-1 Design of dummy payload (Okutomi, Ishizaki)
  • Cartoon: Okutomi should send to Ishizaki soon!
  • Mirror holder: Refer the mirror box for PR.
  9-1 Establishment of procedure (Takahashi, Okutomi)
  • Test plan: Check FR for 2 BFs.
  9-3 Cable assembly
  • 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.
  0-2 Simulation (Okutomi)
  • Problem: Conversion to Simulink was ok. The structure of control has a problem in Matlab. Reconstructing now.
  3-5 ACC preparation (Sato)
  • Space: Make working space in the 20m lab.
  5-1 Manufacturing of blade (Takahashi)
  • Design: 5 blades are used for 200kg load.
  5-6 Design of damper (Sato)
  • Device: Asking design of LVDT-Act. to VIRGO. The device is located at the center of mass.
  6-1 Design of EQ stop (Ishizaki)
  • 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).
  6-4 Design of release sensor (Sato)
  • Position: Inner side of the stage. Need to addtional machining to the EQ stop plate.
  • Electronics: Circuit is simple in the test (handmade).
  8-1 Design of dummy payload (Okutomi, Ishizaki)
  • Condition: 25cm mirror, alignment by moving mass. Make a cartoon.
  • Actuation: Length control is necessary? Check PZT actuator.
  9-1 Establishment of procedure (Takahashi, Okutomi)
  • Test plan: Prepare for 2 sets of release sensors. Check FR for 2 BFs.

Next meeting: 2016/6/21 13:00