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Describe KAGRA/Subgroups/VIS/TypeA/Meeting here. | = Type-A Meeting on 2017/10/31 = 2017/10/31 13:00 - 14:00 @NAOJ Participants: === Minutes === * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=|Schedule]] === Procurement === * PEEK Dsub connector ICRR * Receptacle (Takahashi) * Small hexagon (Takahashi) * Counter weight (Takahashi) * Stepping motor (Takahashi) * Cable assembly (Sato) * Bottom anchor (Sato) * ACC adapter (Sato) * Touch sensor (Sato) * Rack (Ishizaki) * SUS sheets (Ishizaki) Next meeting: 2017/11/7 13:00 = Type-A Meeting on 2017/1/17 = 2017/1/17 13:00 - 14:00 @Kamioka Participants: Takahashi, Ishizaki, Sato, Okutomi === Minutes === 0-2 Simulation (Okutomi) * Report was postponed to the next meeting. 2-1 Setting of top chamber (VAC) * Top chamber was disconnected to repare the leaked part. 3-2 Assembly of TF+IP (Sato) * It was expensive to make new boxes for packing the pre-isolators. We reuse the boxes for IP, * Will be removed from the large clean room on 23rd. 3-6 Procurement of counter weight (Takahashi) * Will be delivered on 18th. 5-7 Procurement of BF damper (Sato) * Will be delivered on 20th. 9-3 Cable assembly (Sato) * Plan of cable arrangement was shown. * Still discussing about tagging. 9-9 Procurement of handling tool (Ishizaki) * Start from covering the floor by stainless steel sheet. 9-10 Procurement of other tools (Sato) * Send small tools used in ATC. Next meeting: 2017/1/24 13:00 = Type-A Meeting on 2017/1/10 = 2017/1/10 13:30 - 14:30 @Kamioka Participants: Takahashi, Ishizaki, Sato, Okutomi === Minutes === 0-2 Simulation (Okutomi) * Report was postponed to the next meeting. 2-1 Setting of top chamber (VAC) * EYV system will be vented in this week. 3-2 Assembly of TF+IP (Sato) * Asking a quotation of modified parts for yaw motor slider. * Asking a quotation of boxes to pack the pre-isolators. 3-6 Procurement of counter weight (Takahashi) * Will be delivered on 18th. 5-7 Procurement of BF damper (Sato) * Will be delivered on 20th. About 10 secondary coils come later. 6-2 Procurement of EQ stop (Ishizaki) * Order spare M12 stop screws. 7-2 Procurement of long maraging rod (Takahashi) * Aging for 3.3m rod is not available. 9-2 Transportation to 2F (Takahashi) * The second transportation for EQ stop parts and tools is scheduled in 10-11th from Mitaka to Kamioka by Kamoshida, on 12th to Y-end by Kamioka-kogyo, and on 13th to 2F by MESCO in January. 9-9 Procurement of handling tool (Ishizaki) * Stainless sheets were delivered. 9-10 Procurement of other tools (Sato) * Send small tools used in ATC. Next meeting: 2017/1/17 13:00 = Type-A Meeting on 2016/12/27 = 2016/12/27 13:00 - 14:30 @Room 210 Participants: Takahashi, Ishizaki, Sato, Okutomi === Minutes === 0-1 Assy. (Ishizaki) * Tomograph is necessary. 0-2 Simulation (Okutomi) * Designed control model will be reported in the next meeting. 2-1 Setting of top chamber (VAC) * The top chamber was connected on 20th. The piston system was modified, so the pre-isolator was not installed. Two cross tubes were assembled. 3-2 Assembly of TF+IP (Sato) * Assembly of two TFs for SR was finished. * Stepping motors for yaw will be assembled later. * A small crack was found on the blade. The plating has come off? 5-8 Test of LVDT-ACT (Okutomi) * Tested a combiner prototype. We asked AEL group the combiner modules with the tested parameter. 6-1 Design of EQ stop (Sato) * Design of bottom anchor was approved. Ask companies a quotation. 6-2 Procurement of EQ stop (Ishizaki) * Checked delivered parts at the site on 22nd. 9-2 Transportation to 2F (Takahashi) * The second transportation for EQ stop parts and tools is scheduled in 10-11th from Mitaka to Kamioka by Kamoshida, on 12th to Y-end by Kamioka-kogyo, and on 13th to 2F by MESCO in January. * Prepare the shipping on 4-5th January. 9-6 Procurement of protection net (Takahashi) * Ordered the net and the frame. 9-7 Procurement of hoist tool (Ishizaki) * Delivered. 9-8 Procurement of foot hold (Ishizaki) * All of parts were delivered. 9-9 Procurement of handling tool (Ishizaki) * Extensions and stainless sheet are necessary. 9-10 Procurement of other tools (Sato) * Make a wire cramp for cryo-payload. * Order the fiber scope. * List up small tools. Next meeting: 2017/1/10 13:00 = Type-A Meeting on 2016/12/13 = 2016/12/13 13:00 - 15:00 @Room 210 Participants: Takahashi, Ishizaki, Sato, Okutomi === Minutes === 0-2 Simulation (Okutomi) * Making the model for the digital control. 2-1 Setting of top chamber (VAC) * Connection of the top chamber is scheduled in 21st-22nd. TMP, cone bellows, feedthroughs, and cross tubes will be assembled. 3-2 Assembly of TF+IP (Sato) * Started assembly of TFs for SR. * IPs for SR will be moved to the clean room on 13th. 5-5 Transportation of BF (Hirata) * Two BFs were transported to Kamioka with the IPs. 5-7 Procurement of damper (Sato) * Magnets were delivered. 6-1 Design of EQ stop (Sato) * Design of bottom anchor was shown. 4 brackets prop up the wall of chamber. 6-2 Procurement of EQ stop (Ishizaki) * Remain parts were delivered on 12th. 7-3 Design of support for long maraging rod (Sato) * The cramp was ordered. 9-2 Transportation to 2F (Takahashi) * IP, Filters, and EQ stop parts were transported in 7-8th. * The second transportation was scheduled in 10-11th for Kamioka and 12-13th for Y-end in January. 9-3 Cable assembly (Sato) * The idea of cable tag was shown. Al plate with tag is fixed to each cable by PEEK filament. 9-7 Procurement of hoist tool (Ishizaki) * Pre-assembly of parasol was tried. 9-9 Procurement of foot hold (Ishizaki) * The bridge was ordered. The parts were delivered on 13th. 9-10 Procurement of other tools (Sato) * The company people on the fiber scope will come to NAOJ on 14th. Next meeting: 2016/12/27 13:00 = Type-A Meeting on 2016/11/29 = 2016/11/29 13:00 - 14:30 @Room 210 Participants: Takahashi, Ishizaki, Sato === Minutes === 2-1 Setting of top chamber (VAC) * TMP comes from NAOJ. It will be attached on 21st December. 3-3 Cable connection of PI (Sato) * 4x2 stepping motors were checked. * Connection of LVDT for one set of IP was ok. * Primary coil for vertical of the other set has disconnection. * Packing of two PIs is on 30th. * Shipping is on 1st December. Ishizaki will receive them on 2nd at the KAGRA site. 5-5 Transportation of BF (Hirata) * Two BFs will be transported with IPs. 5-7 Procurement of damper (Sato) * Magnets should be ordered. 6-2 Procurement of EQ stop (Ishizaki) * Some parts have been delivered on 17th. Remain parts will be delivered on 12th December. 7-2 Procurement of Maraging rod (Takahashi) * Ordered. The first set will be delivered by 20th January. The installation is started on 25th. 7-3 Design of support for long maraging rod (Sato) * Found small clamp for the damper wire. * Ask companies a quotation. 9-2 Transportation to 2F (Takahashi) * The first transportation is scheduled in 7-10th December. * The second transportation is scheduled after 10th January. 9-7 Procurement of hoist tool (Ishizaki) * The parts will be delivered. We need pre-assembly for receiving inspection. 9-9 Procurement of foot hold (Ishizaki) * Design of bridge was fixed. 9-10 Procurement of other tools (Sato) * Ask the company about focus length of the fiber scope. Next meeting: 2016/12/6 13:00 = Type-A Meeting on 2016/11/22 = 2016/11/22 10:00 - 11:30 @Room 210 Participants: Takahashi, Ishizaki, Sato === Minutes === 0-2 Simulation (Okutomi) * (to be reported) 1-1 Clean Booth (FCL) * Cleaning will be finished by 6th December. 3-2 Assembly of TF+IP (Sato) * Shipping of two PIs is scheduled on 1st December. Ishizaki will receive them on 2nd at the KAGRA site. * Two sets for SR was transported from Akeno on 21st. 3-6 Production of counter weight (Takahashi) * On going. 5-5 Transportation of BF (Hirata) * Two BFs will be transported with IPs. 5-7 Procurement of damper (Sato) * Fixed the drawings for the coil bobbin. 7-2 Procurement of Maraging rod (Takahashi) * One set of receptacles will be manufactured as new ones. 7-3 Design of support for long maraging rod (Sato) * Set collar is useful for center wire. * It is necessary to hold the load of 7-8kg. 9-2 Transportation to 2F (Takahashi) * Divided the transportation by the company by 2 times. * PIs will be transported after 10th December. 9-3 Cable assembly (Sato) * Only tube of connection pin is necessary. 9-7 Procurement of hoist tool (Ishizaki) *Parasol is independent in the frame order. 9-9 Procurement of foot hold (Ishizaki) * Bridge consists of Misumi frame. 9-10 Procurement of other tools (Ishizaki) * Some ideas on fiber scope were shown by Sato. Next meeting: 2016/11/29 13:00 = Type-A Meeting on 2016/11/15 = 2016/11/15 13:00 - 14:30 @Room 210 Participants: Takahashi, Ishizaki, Sato, Okutomi === Minutes === 0-1 Assy. (Ishizaki) * Inconsistency of 1mm in the total length of EQ stop was solved. 0-2 Simulation (Okutomi) * Sharing the parameters with Miyamoto by Google spreadsheet. * Made the real time model, but not "make" and "build" yet. * Made master model of PI and GASF for Type-B. 3-2 Assembly of TF+IP (Sato) * Next work is on 16th. * Shipping of two PIs was scheduled on 1st December. Ishizaki will receive them on 2nd at the KAGRA site. * Two sets for SR will be transported from Akeno on 21st. 3-5 ACC preparation (Sato) * Measurements of 6 units were finished. 2 of 6 have low performance. * Measurements of remained 3 units are postponed. 3-6 Production of counter weight (Takahashi) * On going. 5-5 Transportation of BF (Hirata) * Two BFs were packed. They will be transported with IPs. 5-7 Procurement of damper (Sato) * Open bidding was on 9th. * There is a meeting with the company on 15th. 6-3 Test of EQ stop prototype (Ishizaki) * Pending. 6-4 Design of release sensor (Sato) * Consulted on interface with AEL members. 6-5 Procurement of release sensor (Sato) * The sensors were delivered. 7-3 Design of support for long maraging rod (Takahashi) * It is difficult to keep high tension. * Think a clamp so that it can keep the position without slip down. 9-1 Document of procedure (Takahashi) * The review was held on 4th. 9-2 Transportation to 2F (Takahashi) * Asking a company transportation to the Y-end during 7-13th December. 9-6~10 Procurement of tools (Ishizaki) * Footholds, table, chain blocks, and lifter will be ordered soon. * Still asking some companies a quotation for the hoist tool. Next meeting: 2016/11/22 10:00 = Type-A Review on 2016/11/4 = [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5855]] = Type-A Meeting on 2016/11/1 = 2016/11/1 13:00 - 13:30 @Room 210 Participants: Takahashi, Ishizaki, Sato, Okutomi === Minutes === 0-1 Assy. (Ishizaki) * Updated 2D assy. drawings. The total length of EQ stop is inconsistent by 1mm. 0-2 Simulation (Okutomi) * Make digital control model of Type-A system. 3-2 Assembly of TF+IP (Sato) * New bolts for the yoke were delivered. * The top filter was mounted onto the IP. * The shaft screw of motor was not matching to the slider for fishing rod. New shafts were delivered. * LVDT driver and DC power supply are necessary. 3-5 ACC preparation (Sato) * Next measurements is planed on 7-9th. 5-5 Transportation of BF (Hirata) * Packing of two BFs was postponed. 5-7 Procurement of damper (Sato) * Open bidding is on 9th. 7-2 Procurement of Maraging rod (Takahashi) * Asking the company a quotation. 9-1 Document of procedure (Takahashi) * The review is held on 4th. Draft document was previewed and discussed. 9-2 Transportation to 2F (Takahashi) * Transportation to Kamioka is on 25th. * Transportation to the Y end is on 30th. 9-6~10 Procurement of tools (Ishizaki) * Go to the order after the review. Next meeting: 2016/11/15 13:00 = Type-A Meeting on 2016/10/25 = 2016/10/25 13:00 - 14:00 @4th meeting room Participants: Takahashi, Ishizaki, Sato, Okutomi === Minutes === 0-1 Assy. (Ishizaki) * Made 2D assy. drawings (cross section). 0-2 Simulation (Okutomi) * Make Type-B model too. 1-1 Clean Booth (FCL) * Finish the construction and cleaning by the end of November. 2-1 Setting of top chamber (VAC) * Leak test is planed from 13th to end in December. 3-2 Assembly of TF+IP (Sato) * Magnets were replaced. * Broken bolts were removed. Ordered new bolts. * If the bolts arrived, go to assembly on 26th. 3-5 ACC preparation (Sato) * The results of measurement for 3 ACCs at the KAGRA site should be reported on 28th. * Next measurements is planed on 7-9th in November. 5-5 Transportation of BF (Hirata) * Pack two BFs on 26th. 5-7 Procurement of damper (Sato) * Proposal was submitted. It will be circulated. 5-8 Test of LVDT (Okutomi) * Design combiner by the end of November. 6-3 Test of prototype (Ishizaki) * If no assembly work for pre-isolaotr, go to test on 26th. 7-2 Procurement of Maraging rod (Takahashi) * Hirata is making 2D drawings. 9-1 Document of procedure (Takahashi) * The review is held on 4th November. Make drawings for the document. 9-2 Transportation to 2F (Takahashi) * T3 is available in arm. * Cover items at for passing through IYC and EYC. 9-7 Procurement of hoist tool (Ishizaki) * Consulting with a company. It is difficult to use polycarbonate sheet of 2mm. 9-9 Procurement of handling tool (Ishizaki) * Kimura-san will order the floor plate around cross tube. * Price of hand lifer made of stainless steel is more than 0.3MYen. 9-10 Procurement of other tools (Ishizaki) * Fiber scope is useful, but the size is limited. Next meeting: 2016/11/1 13:00 = Type-A Meeting on 2016/10/18 = 2016/10/18 13:00 - 14:30 @Room 210 Participants: Takahashi, Ishizaki, Sato, Okutomi === Minutes === 0-1 Assy. (Ishizaki) * Made 2D assy. drawings (cross section). 0-2 Simulation (Okutomi) * Had the workshop with Miyamoto on 6-8th. Made the model including the cryo-payload. 2-2 Procurement of cone bellows (Takahashi) * Delivered. 3-2 Assembly of TF+IP (Sato) * IP and TF were carried into the clean room in 6-7th. * Poles to support upper TF were collapsed in the box. Some screws and magnets for york are broken. * Started assembly of pre-isolator on 19th. 3-5 ACC preparation (Sato) * Measured the sensitivity of 3 ACCs at the KAGRA site in 12-14th. * Measured sensitivities were 10^-10~10^-9m/rtHz. 5-2 Assembly of BF (Hirata) * Finished the assembly of two BFs. They will be packed on 26th. 5-7 Procurement of damper (Sato) * The bidding was announced on 14th. Open bidding is on 9th November. 5-8 Test of LVDT (Okutomi) * Designing combiner. 6-5 Procurement of release sensor (Sato) * Ordered. 7-2 Procurement of Maraging rod (Takahashi) * Asked ATC redesign of the head with safety margin of 2. * Hirata is making 2D drawings. 9-1 Document of procedure (Takahashi) * The review is held on 4th November. 9-7 Procurement of hoist tool (Ishizaki) * Designed the hoist tool using 500kg chain blocks. Consult with a company. 9-8 Procurement of foot hold (Ishizaki) * Order 3 (high) and 2 (low) sets of foot hold. 9-9 Procurement of handling tool (Ishizaki) * Kimura-san is considering floor plate around the cross tube. * Total load for the floor comes from the weight of carry lifter and dummy payload. 9-10 Procurement of other tools (Ishizaki) * Consider lope to avoid falling tools. * Sato suggested cable tab. Next meeting: 2016/10/25 13:00 = Type-A Meeting on 2016/10/4 = 2016/10/4 13:00 - 14:30 @Room 210 Participants: Takahashi, Ishizaki, Sato, Okutomi === Minutes === 0-1 Assy. (Ishizaki) * Adding F1 damper and IP base. 0-2 Simulation (Okutomi) * The work with Miyamoto is planed in 6-8th. 3-1 Transportation of IP and TF (Takahashi) * Held on 3rd. Used the fork lift. 3-2 Assembly of TF+IP (Sato) * Inspection of crane in the large clean room is held on 5th. * Carry IP and Tf into the clean room in 6-7th. 3-5 ACC preparation (Sato) * Final test is planed at the KAGRA site on 12-14th. * Drivers and additional 3 units should be sent within this week. 5-2 Assembly of BF (Hirata) * Assembling the 2nd unit. 5-7 Procurement of damper (Sato) * Asking quotation. Some questions are coming from the company. 5-8 Test of LVDT (Okutomi) * Test report was uploaded. 6-2 Procurement of EQ stop (Ishizaki) * Need holes for cables on the shild plate. 6-3 Test of prototype (Ishizaki) * The next test will be held on 5th. 6-5 Procurement of release sensor (Sato) * Order soon. 7-2 Procurement of Maraging rod (Takahashi) * We concluded that the load during crane operation is not over 2G. * We should take care of misoperation. 9-1 Document of procedure (Takahashi) * The review is scheduled in early November. 9-2 Transportation to 2F (Takahashi) * Crawler was prepared at the site. 9-7 Procurement of hoist tool (Ishizaki) * Designing now. Next meeting: 2016/10/18 13:00 = Type-A Meeting on 2016/9/20 = 2016/9/20 13:00 - 14:30 @4th meeting room Participants: Takahashi, Ishizaki, Sato, Okutomi === Minutes === 0-1 Assy. (Ishizaki) * Adding the model of BF damper and replacing the model of BF by Hirata. * Asking the company the model of IP base. 0-2 Simulation (Okutomi) * The next meeting with Miyamoto has not been scheduled yet. 3-1 Transportation of IP and TF (Takahashi) * Akeno on 3rd October. 3-2 Assembly of TF+IP (Sato) * The place became the large clean room in ATC. * Access from the east door of TMT building is available. 3-5 ACC preparation (Sato) * Final test is planed at the KAGRA site on 28-30th. 5-7 Procurement of damper (Sato) * Making the specification document. Add inspection items, baking, S/N, gluing. 5-8 Test of LVDT (Okutomi) * Measured the actuator Efficiency: 76mN/A. * Measured the position dependence of the efficiency. * Thermal load of 1W is predicted. PEEK is still acceptable. 6-2 Procurement of EQ stop (Takahashi) * Had kick off meeting with the company person on 16th. * Length of rods was changed. 6-3 Test of prototype (Ishizaki) * Tuned the weight of dummy payload for BF. * The next test will be held in October. 6-5 Procurement of release sensor (Sato) * Ask quotation. 7-2 Procurement of Maraging rod (Takahashi) * The safety margin in Virgo was 2. * Show head size roughly. 9-7 Procurement of hoist tool (Ishizaki) * Start design. 9-8 Procurement of foot hold (Ishizaki) * Short holds (~1m) are necessary too. Next meeting: 2016/10/4 13:00 = Type-A Meeting on 2016/9/13 = 2016/9/13 13:00 - 14:30 @Room210 Participants: Takahashi, Ishizaki, Sato, Okutomi === Minutes === 0-1 Assy. (Ishizaki) * Made assy. model with the chamber. Add the IP base to the mode. 0-2 Simulation (Okutomi) * Making a model of cryo-payload independently. 1-1 Clean booth (FCL) * Cleaning around EYV will be started on 5th December. 3-2 Assembly of TF+IP (Sato) * The place has not decided yet. 3-5 ACC preparation (Sato) * Measured additional 3 units. The last i unit has a different connector. 5-2 Assembly of BF (Hirata) * Started on 7th. 5-6 Design of damper (Sato) * Made the drawings of parts. Make assy. drawings. * Showed design of the cabling and the connector plate. * The 1st specification document should be prepared by 16th. 5-8 Test of LVDT (Okutomi) * Set up the bench for actuator test using damping rods and an acrylic table. * Measured the LVDT. Efficiency: 575V/m, Sensitivity: 10^-8m/rtHz 6-2 Procurement of EQ stop (Takahashi) * Open bidding is on 13th. 6-3 Test of prototype (Ishizaki) * The next setup consists of SF-BF-DP with M12 receptacle. * The work is planed on 14th. 6-5 Procurement of release sensor (Sato) * Ask quotation for sensors with short cable. 7-2 Procurement of maraging rod (Takahashi) * New design and test for strength is on going. * CFRP is available as material? 9-8 Procurement of foot hold (Ishizaki) * Considering the type used in ATC, which is ready made and folded. Next meeting: 2016/9/20 13:00 = Type-A Meeting on 2016/9/6 = 2016/9/6 13:00 - 14:00 @Room310 Participants: Takahashi, Ishizaki, Sato, Okutomi === Minutes === 0-1 Assy. (Ishizaki) * This is the first priolity. 0-2 Simulation (Okutomi) * Consulted with Miyamoto at Hongo on 1st. The information was shared. * Make a model of cryo-payload independently, and compare each other. 2-1 Setting of top chamber (VAC) * It is difficult to insert the cone bellows later. * The pre-isolator will be put on the cone bellows at the time of leak test. 3-2 Assembly of TF+IP (Sato) * The place has not decided yet. Scheduling is pending. 3-5 ACC preparation (Sato) * Other 3 units were taken on 31st. 5-1 Manufacturing of blade (Takahashi) * Ni plating was finished. Some blades were lusterless. They will be plated again. 5-2 Assembly of BF (Hirata) * From 7th. 5-6 Design of damper (Sato) * The support for primary coil and the hole position in coil bobbin will be modified. 5-8 Test of LVDT (Okutomi) * Coil winding and assembly of the prototype was finished. * The test will be started in this week. 6-1 Design of EQ stop (Ishizaki) * The length of rods was changed. 6-2 Procurement of EQ stop (Takahashi) * Open bidding will be on 13th. 6-3 Test of prototype (Ishizaki) * The next setup consists of SF-BF-DP with M12 receptacle. * It is necessary to disassemble the EQ stop once. The work is planed on 7th. 6-5 Procurement of release sensor (Sato) * Ask quotation for sensors with long cable. 7-2 Procurement of maraging rod (Takahashi) * Calculation and test for strength is on going. * The shape of head should be modified. Max. diameter is 8mm. 9-2 Transportation to 2F (Takahashi) * 100kg crawler is in consideration. 9-5 Installation * From 20th in January. 9-7 Procurement of hoist tool (Ishizaki) * Items will be hung by 3 chain blocks. * 1.5t chain block is in consideration, but maybe too large. 9-9 Procurement of handling tool (Ishizaki) * Stainless plate is necessary on the fine floor. * It is difficult to prepare for a hand lifter with large foot width. Next meeting: 2016/9/13 13:00 = Type-A Meeting on 2016/8/30 = 2016/8/30 13:00 - 15:00 @Room210 Participants: Takahashi, Ishizaki, Sato, Okutomi === Minutes === 0-1 Assy. (Ishizaki) * This is the first priolity. 0-2 Simulation (Okutomi) * Showed the yaw spectrum of the BF. * Requirement for dynamic range has not been shown yet. * Requirement for sensor is 10^-10m/rtHz, if the BF is controlled all the time. * Meet Miyamoto to discuss on the cryo-payload on 1st September. 2-1 Setting of top chamber (VAC) * Leak test will be postponed for half of month due to delay of cooling test. 3-2 Assembly of TF+IP (Sato) * Takahashi had a meeting on the place with Flaminio and Aso on 25th. * The place has not decided yet. Still negotiating. 3-5 ACC preparation (Sato) * Calibration is postponed to the end of September. * Other 3 units will be taken on 31st. 5-2 Assembly of BF (Hirata) * From September. 5-6 Design of damper (Sato) * Amount of lift-up should be decided before the design of support ring. * Rotational position of BF cover should be fixed. * How to keep cables to cryostat? Connected or disconnected. * Bracket was modified. The lowest frequency was 120Hz. * Shape of bobbin depends on the prototype test. * Connectors for coils are mounted on the support frame. 5-8 Test of LVDT (Okutomi) * Amplitude of oscillator was increased in 5 times. Efficiency became 5 times. * Test of sensor was finished. Test of actuator has not been yet. 6-2 Procurement of EQ stop (Takahashi) * Two companies bid. Technical examination will be held. 6-3 Test of prototype (Ishizaki) * Takahashi will make the test plan and Ishizaki will make the schedule. * Keep one day per week at least for the test. 6-6 Circuit for release sensor (Sato) * The test circuit will be used in installation. * Final circuit is necessary by July in 2017. * Consult with AEL. 7-2 Procurement of maraging rod (Takahashi) * Calculation and test for strength is necessary for all rods. * If the strength is not large enough, the shape of head should be modified. 7-3 Design of support (Takahashi) * The rod for cryo-payload can stay in the cryostat. 9-3 Cable assembly (Sato) * Plates for connectors should procured with the items on BF damping. * Add 20 plates for Type-Bp. 9-10 Other tools (Ishizaki) * Added as new items. Next meeting: 2016/9/6 13:00 = Type-A Meeting on 2016/8/23 = 2016/8/23 13:00 - 14:30 @Large meeting room Participants: Takahashi, Sato, Okutomi === Minutes === 0-2 Simulation (Okutomi) * Calculating requirement for actuators and sensors. * Estimated the case using F7 LVDT, and the case using actual LVDT. * Summarized within today, and present in the f2f meeting. 2-1 Setting of top chamber (VAC) * Leak test should be performed in December, 2016. 3-2 Assembly of TF+IP (Sato) * Takahashi had a meeting on the place with Flaminio and Aso. * The place has not decided yet. Next meeting will be held on 25th. 3-5 ACC preparation (Sato) * Measured 6 sets were transported to Kamioka. * Calibration is planed at the site from 5th in September. 4-4 Transportation of SF (Hirata) * 6 sets were transported to Kamioka on 17th. 5-6 Design of damper (Sato) * Structure analysis was applied to the model. * Bracket of primary coil: 102Hz, bracket of secondary coil: 124Hz, including ring (t=20mm): 100Hz * The shape of adjustment hole will be changed from long circle to large circle. 5-8 Test of LVDT (Okutomi) * Designed adapter for primary coil. * Considering set up for actuator. * Coil bobbins of prototype were delivered on 19th. * Amplitude of oscillator should be larger (now 1V). 6-2 Procurement of EQ stop (Takahashi) * The bidding was announced on 17th. Two companies had contact. 6-3 Test of prototype (Ishizaki) * Suspension test using maraging wires was performed on 18th. 6-6 Circuit for release sensor (Sato) * This item should be added. 9-6~9 Installation (Ishizaki) * Protection net, hoist tool, foot hold, handling tool were added as new items. Next meeting: 2016/8/30 13:00 = 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. 0-2 Simulation (Okutomi) * Calculated coupling to the yaw mode assuming asymmetry of 1mm and 3mm. The result was linear. * Updating the calculation (Next by 8/10). 3-5 ACC preparation (Sato) * Additional 3 sets have not been extracted yet. 3-6 Procurement of counter weight * Delay. 4-2,3 Standard filter (Hirata) * The 6th set will be finished on 10th. 5-6 Design of damper (Sato) * Design of frame and jigs was progressed. * We consulted with a company on procurement. 5-8 Test of LVDT (Okutomi) * 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. 6-1 Design of EQ stop (Ishizaki) * 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. 6-4 Design of release sensor (Sato) * Height of base was 56mm. Changed to 50mm. 8-1 Design of dummy payload (Okutomi, Ishizaki) * The length of Hook was reduced. 9-1 Installation procedure (Takahashi) * The document will be revised by the review. 9-3 Cable assembly (Sato) * 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. 0-2 Simulation (Okutomi) * Introduction of coupling to the yaw mode was wrong in the last calculation. * Updating the calculation. 1-1 Clean booth (FCL) * The lighting is made by the LED inside the booth. 3-2 Assembly of TF+IP (Sato) * The assembly work will be started on 30th August at the KAGRA site. 3-5 ACC preparation (Sato) * Additional 3 sets have not been extracted yet. 4-2,3 Standard filter (Hirata) * The 5th set was finished. 5-1 Manufacturing of blade (Takahashi) * The thermal process for the blades was finished. 5-6 Design of damper (Sato) * The plate for damper is independent of EQ stop frame. * Each LVDT has position adjustment. 5-8 Test of LVDT (Okutomi) * Set the test bench for LVDT sample at ATC lab. * Making 2-pin lemo cables. * A summer student will join to the test. 6-1 Design of EQ stop (Ishizaki) * 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. 6-3 Test of prototype (Ishizaki) * Tested connection and lift down of the EQ stop prototype on 27th July. 6-4 Design of release sensor (Sato) * Set at 5mm under of each filter. * The shape of jigs will be modified with thick base. 8-1 Design of dummy payload (Okutomi, Ishizaki) * The bottom should be a breadboard with 50mm interval. 9-1 Installation procedure (Takahashi) * 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. 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 |
Type-A Meeting on 2017/10/31
2017/10/31 13:00 - 14:00 @NAOJ
Participants:
Minutes
Procurement
- PEEK Dsub connector ICRR
- Receptacle (Takahashi)
- Small hexagon (Takahashi)
- Counter weight (Takahashi)
- Stepping motor (Takahashi)
- Cable assembly (Sato)
- Bottom anchor (Sato)
- ACC adapter (Sato)
- Touch sensor (Sato)
- Rack (Ishizaki)
- SUS sheets (Ishizaki)
Next meeting: 2017/11/7 13:00
Type-A Meeting on 2017/1/17
2017/1/17 13:00 - 14:00 @Kamioka
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-2 Simulation (Okutomi)
- Report was postponed to the next meeting.
- Top chamber was disconnected to repare the leaked part.
- It was expensive to make new boxes for packing the pre-isolators. We reuse the boxes for IP,
- Will be removed from the large clean room on 23rd.
- Will be delivered on 18th.
- Will be delivered on 20th.
- Plan of cable arrangement was shown.
- Still discussing about tagging.
- Start from covering the floor by stainless steel sheet.
- Send small tools used in ATC.
Next meeting: 2017/1/24 13:00
Type-A Meeting on 2017/1/10
2017/1/10 13:30 - 14:30 @Kamioka
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-2 Simulation (Okutomi)
- Report was postponed to the next meeting.
- EYV system will be vented in this week.
- Asking a quotation of modified parts for yaw motor slider.
- Asking a quotation of boxes to pack the pre-isolators.
- Will be delivered on 18th.
- Will be delivered on 20th. About 10 secondary coils come later.
- Order spare M12 stop screws.
- Aging for 3.3m rod is not available.
- The second transportation for EQ stop parts and tools is scheduled in 10-11th from Mitaka to Kamioka by Kamoshida, on 12th to Y-end by Kamioka-kogyo, and on 13th to 2F by MESCO in January.
- Stainless sheets were delivered.
- Send small tools used in ATC.
Next meeting: 2017/1/17 13:00
Type-A Meeting on 2016/12/27
2016/12/27 13:00 - 14:30 @Room 210
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assy. (Ishizaki)
- Tomograph is necessary.
- Designed control model will be reported in the next meeting.
- The top chamber was connected on 20th. The piston system was modified, so the pre-isolator was not installed. Two cross tubes were assembled.
- Assembly of two TFs for SR was finished.
- Stepping motors for yaw will be assembled later.
- A small crack was found on the blade. The plating has come off?
- Tested a combiner prototype. We asked AEL group the combiner modules with the tested parameter.
- Design of bottom anchor was approved. Ask companies a quotation.
- Checked delivered parts at the site on 22nd.
- The second transportation for EQ stop parts and tools is scheduled in 10-11th from Mitaka to Kamioka by Kamoshida, on 12th to Y-end by Kamioka-kogyo, and on 13th to 2F by MESCO in January.
- Prepare the shipping on 4-5th January.
- Ordered the net and the frame.
- Delivered.
- All of parts were delivered.
- Extensions and stainless sheet are necessary.
- Make a wire cramp for cryo-payload.
- Order the fiber scope.
- List up small tools.
Next meeting: 2017/1/10 13:00
Type-A Meeting on 2016/12/13
2016/12/13 13:00 - 15:00 @Room 210
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-2 Simulation (Okutomi)
- Making the model for the digital control.
- Connection of the top chamber is scheduled in 21st-22nd. TMP, cone bellows, feedthroughs, and cross tubes will be assembled.
- Started assembly of TFs for SR.
- IPs for SR will be moved to the clean room on 13th.
- Two BFs were transported to Kamioka with the IPs.
- Magnets were delivered.
- Design of bottom anchor was shown. 4 brackets prop up the wall of chamber.
- Remain parts were delivered on 12th.
- The cramp was ordered.
- IP, Filters, and EQ stop parts were transported in 7-8th.
- The second transportation was scheduled in 10-11th for Kamioka and 12-13th for Y-end in January.
- The idea of cable tag was shown. Al plate with tag is fixed to each cable by PEEK filament.
- Pre-assembly of parasol was tried.
- The bridge was ordered. The parts were delivered on 13th.
- The company people on the fiber scope will come to NAOJ on 14th.
Next meeting: 2016/12/27 13:00
Type-A Meeting on 2016/11/29
2016/11/29 13:00 - 14:30 @Room 210
Participants: Takahashi, Ishizaki, Sato
Minutes
- 2-1 Setting of top chamber (VAC)
- TMP comes from NAOJ. It will be attached on 21st December.
- 4x2 stepping motors were checked.
- Connection of LVDT for one set of IP was ok.
- Primary coil for vertical of the other set has disconnection.
- Packing of two PIs is on 30th.
- Shipping is on 1st December. Ishizaki will receive them on 2nd at the KAGRA site.
- Two BFs will be transported with IPs.
- Magnets should be ordered.
- Some parts have been delivered on 17th. Remain parts will be delivered on 12th December.
- Ordered. The first set will be delivered by 20th January. The installation is started on 25th.
- Found small clamp for the damper wire.
- Ask companies a quotation.
- The first transportation is scheduled in 7-10th December.
- The second transportation is scheduled after 10th January.
- The parts will be delivered. We need pre-assembly for receiving inspection.
- Design of bridge was fixed.
- Ask the company about focus length of the fiber scope.
Next meeting: 2016/12/6 13:00
Type-A Meeting on 2016/11/22
2016/11/22 10:00 - 11:30 @Room 210
Participants: Takahashi, Ishizaki, Sato
Minutes
- 0-2 Simulation (Okutomi)
- (to be reported)
- Cleaning will be finished by 6th December.
- Shipping of two PIs is scheduled on 1st December. Ishizaki will receive them on 2nd at the KAGRA site.
- Two sets for SR was transported from Akeno on 21st.
- On going.
- Two BFs will be transported with IPs.
- Fixed the drawings for the coil bobbin.
- One set of receptacles will be manufactured as new ones.
- Set collar is useful for center wire.
- It is necessary to hold the load of 7-8kg.
- Divided the transportation by the company by 2 times.
- PIs will be transported after 10th December.
- Only tube of connection pin is necessary.
- Parasol is independent in the frame order.
- Bridge consists of Misumi frame.
- Some ideas on fiber scope were shown by Sato.
Next meeting: 2016/11/29 13:00
Type-A Meeting on 2016/11/15
2016/11/15 13:00 - 14:30 @Room 210
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assy. (Ishizaki)
- Inconsistency of 1mm in the total length of EQ stop was solved.
- Sharing the parameters with Miyamoto by Google spreadsheet.
- Made the real time model, but not "make" and "build" yet.
- Made master model of PI and GASF for Type-B.
- Next work is on 16th.
- Shipping of two PIs was scheduled on 1st December. Ishizaki will receive them on 2nd at the KAGRA site.
- Two sets for SR will be transported from Akeno on 21st.
- Measurements of 6 units were finished. 2 of 6 have low performance.
- Measurements of remained 3 units are postponed.
- On going.
- Two BFs were packed. They will be transported with IPs.
- Open bidding was on 9th.
- There is a meeting with the company on 15th.
- Pending.
- Consulted on interface with AEL members.
- The sensors were delivered.
- It is difficult to keep high tension.
- Think a clamp so that it can keep the position without slip down.
- The review was held on 4th.
- Asking a company transportation to the Y-end during 7-13th December.
- Footholds, table, chain blocks, and lifter will be ordered soon.
- Still asking some companies a quotation for the hoist tool.
Next meeting: 2016/11/22 10:00
Type-A Review on 2016/11/4
http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5855
Type-A Meeting on 2016/11/1
2016/11/1 13:00 - 13:30 @Room 210
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assy. (Ishizaki)
- Updated 2D assy. drawings. The total length of EQ stop is inconsistent by 1mm.
- Make digital control model of Type-A system.
- New bolts for the yoke were delivered.
- The top filter was mounted onto the IP.
- The shaft screw of motor was not matching to the slider for fishing rod. New shafts were delivered.
- LVDT driver and DC power supply are necessary.
- Next measurements is planed on 7-9th.
- Packing of two BFs was postponed.
- Open bidding is on 9th.
- Asking the company a quotation.
- The review is held on 4th. Draft document was previewed and discussed.
- Transportation to Kamioka is on 25th.
- Transportation to the Y end is on 30th.
- Go to the order after the review.
Next meeting: 2016/11/15 13:00
Type-A Meeting on 2016/10/25
2016/10/25 13:00 - 14:00 @4th meeting room
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assy. (Ishizaki)
- Made 2D assy. drawings (cross section).
- Make Type-B model too.
- Finish the construction and cleaning by the end of November.
- Leak test is planed from 13th to end in December.
- Magnets were replaced.
- Broken bolts were removed. Ordered new bolts.
- If the bolts arrived, go to assembly on 26th.
- The results of measurement for 3 ACCs at the KAGRA site should be reported on 28th.
- Next measurements is planed on 7-9th in November.
- Pack two BFs on 26th.
- Proposal was submitted. It will be circulated.
- Design combiner by the end of November.
- If no assembly work for pre-isolaotr, go to test on 26th.
- Hirata is making 2D drawings.
- The review is held on 4th November. Make drawings for the document.
- T3 is available in arm.
- Cover items at for passing through IYC and EYC.
- Consulting with a company. It is difficult to use polycarbonate sheet of 2mm.
- Kimura-san will order the floor plate around cross tube.
- Price of hand lifer made of stainless steel is more than 0.3MYen.
- Fiber scope is useful, but the size is limited.
Next meeting: 2016/11/1 13:00
Type-A Meeting on 2016/10/18
2016/10/18 13:00 - 14:30 @Room 210
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assy. (Ishizaki)
- Made 2D assy. drawings (cross section).
- Had the workshop with Miyamoto on 6-8th. Made the model including the cryo-payload.
- Delivered.
- IP and TF were carried into the clean room in 6-7th.
- Poles to support upper TF were collapsed in the box. Some screws and magnets for york are broken.
- Started assembly of pre-isolator on 19th.
- Measured the sensitivity of 3 ACCs at the KAGRA site in 12-14th.
Measured sensitivities were 10-10~10-9m/rtHz.
- Finished the assembly of two BFs. They will be packed on 26th.
- The bidding was announced on 14th. Open bidding is on 9th November.
- Designing combiner.
- Ordered.
- Asked ATC redesign of the head with safety margin of 2.
- Hirata is making 2D drawings.
- The review is held on 4th November.
- Designed the hoist tool using 500kg chain blocks. Consult with a company.
- Order 3 (high) and 2 (low) sets of foot hold.
- Kimura-san is considering floor plate around the cross tube.
- Total load for the floor comes from the weight of carry lifter and dummy payload.
- Consider lope to avoid falling tools.
- Sato suggested cable tab.
Next meeting: 2016/10/25 13:00
Type-A Meeting on 2016/10/4
2016/10/4 13:00 - 14:30 @Room 210
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assy. (Ishizaki)
- Adding F1 damper and IP base.
- The work with Miyamoto is planed in 6-8th.
- Held on 3rd. Used the fork lift.
- Inspection of crane in the large clean room is held on 5th.
- Carry IP and Tf into the clean room in 6-7th.
- Final test is planed at the KAGRA site on 12-14th.
- Drivers and additional 3 units should be sent within this week.
- Assembling the 2nd unit.
- Asking quotation. Some questions are coming from the company.
- Test report was uploaded.
- Need holes for cables on the shild plate.
- The next test will be held on 5th.
- Order soon.
- We concluded that the load during crane operation is not over 2G.
- We should take care of misoperation.
- The review is scheduled in early November.
- Crawler was prepared at the site.
- Designing now.
Next meeting: 2016/10/18 13:00
Type-A Meeting on 2016/9/20
2016/9/20 13:00 - 14:30 @4th meeting room
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assy. (Ishizaki)
- Adding the model of BF damper and replacing the model of BF by Hirata.
- Asking the company the model of IP base.
- The next meeting with Miyamoto has not been scheduled yet.
- Akeno on 3rd October.
- The place became the large clean room in ATC.
- Access from the east door of TMT building is available.
- Final test is planed at the KAGRA site on 28-30th.
- Making the specification document. Add inspection items, baking, S/N, gluing.
- Measured the actuator Efficiency: 76mN/A.
- Measured the position dependence of the efficiency.
- Thermal load of 1W is predicted. PEEK is still acceptable.
- Had kick off meeting with the company person on 16th.
- Length of rods was changed.
- Tuned the weight of dummy payload for BF.
- The next test will be held in October.
- Ask quotation.
- The safety margin in Virgo was 2.
- Show head size roughly.
- Start design.
- Short holds (~1m) are necessary too.
Next meeting: 2016/10/4 13:00
Type-A Meeting on 2016/9/13
2016/9/13 13:00 - 14:30 @Room210
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assy. (Ishizaki)
- Made assy. model with the chamber. Add the IP base to the mode.
- Making a model of cryo-payload independently.
- Cleaning around EYV will be started on 5th December.
- The place has not decided yet.
- Measured additional 3 units. The last i unit has a different connector.
- Started on 7th.
- Made the drawings of parts. Make assy. drawings.
- Showed design of the cabling and the connector plate.
- The 1st specification document should be prepared by 16th.
- Set up the bench for actuator test using damping rods and an acrylic table.
- Measured the LVDT. Efficiency: 575V/m, Sensitivity: 10^-8m/rtHz
- Open bidding is on 13th.
- The next setup consists of SF-BF-DP with M12 receptacle.
- The work is planed on 14th.
- Ask quotation for sensors with short cable.
- New design and test for strength is on going.
- CFRP is available as material?
- Considering the type used in ATC, which is ready made and folded.
Next meeting: 2016/9/20 13:00
Type-A Meeting on 2016/9/6
2016/9/6 13:00 - 14:00 @Room310
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assy. (Ishizaki)
- This is the first priolity.
- Consulted with Miyamoto at Hongo on 1st. The information was shared.
- Make a model of cryo-payload independently, and compare each other.
- It is difficult to insert the cone bellows later.
- The pre-isolator will be put on the cone bellows at the time of leak test.
- The place has not decided yet. Scheduling is pending.
- Other 3 units were taken on 31st.
- Ni plating was finished. Some blades were lusterless. They will be plated again.
- From 7th.
- The support for primary coil and the hole position in coil bobbin will be modified.
- Coil winding and assembly of the prototype was finished.
- The test will be started in this week.
- The length of rods was changed.
- Open bidding will be on 13th.
- The next setup consists of SF-BF-DP with M12 receptacle.
- It is necessary to disassemble the EQ stop once. The work is planed on 7th.
- Ask quotation for sensors with long cable.
- Calculation and test for strength is on going.
- The shape of head should be modified. Max. diameter is 8mm.
- 100kg crawler is in consideration.
- From 20th in January.
- Items will be hung by 3 chain blocks.
- 1.5t chain block is in consideration, but maybe too large.
- Stainless plate is necessary on the fine floor.
- It is difficult to prepare for a hand lifter with large foot width.
Next meeting: 2016/9/13 13:00
Type-A Meeting on 2016/8/30
2016/8/30 13:00 - 15:00 @Room210
Participants: Takahashi, Ishizaki, Sato, Okutomi
Minutes
- 0-1 Assy. (Ishizaki)
- This is the first priolity.
- Showed the yaw spectrum of the BF.
- Requirement for dynamic range has not been shown yet.
- Requirement for sensor is 10^-10m/rtHz, if the BF is controlled all the time.
- Meet Miyamoto to discuss on the cryo-payload on 1st September.
- Leak test will be postponed for half of month due to delay of cooling test.
- Takahashi had a meeting on the place with Flaminio and Aso on 25th.
- The place has not decided yet. Still negotiating.
- Calibration is postponed to the end of September.
- Other 3 units will be taken on 31st.
- From September.
- Amount of lift-up should be decided before the design of support ring.
- Rotational position of BF cover should be fixed.
- How to keep cables to cryostat? Connected or disconnected.
- Bracket was modified. The lowest frequency was 120Hz.
- Shape of bobbin depends on the prototype test.
- Connectors for coils are mounted on the support frame.
- Amplitude of oscillator was increased in 5 times. Efficiency became 5 times.
- Test of sensor was finished. Test of actuator has not been yet.
- Two companies bid. Technical examination will be held.
- Takahashi will make the test plan and Ishizaki will make the schedule.
- Keep one day per week at least for the test.
- The test circuit will be used in installation.
- Final circuit is necessary by July in 2017.
- Consult with AEL.
- Calculation and test for strength is necessary for all rods.
- If the strength is not large enough, the shape of head should be modified.
- The rod for cryo-payload can stay in the cryostat.
- Plates for connectors should procured with the items on BF damping.
- Add 20 plates for Type-Bp.
- Added as new items.
Next meeting: 2016/9/6 13:00
Type-A Meeting on 2016/8/23
2016/8/23 13:00 - 14:30 @Large meeting room
Participants: Takahashi, Sato, Okutomi
Minutes
- 0-2 Simulation (Okutomi)
- Calculating requirement for actuators and sensors.
- Estimated the case using F7 LVDT, and the case using actual LVDT.
- Summarized within today, and present in the f2f meeting.
- Leak test should be performed in December, 2016.
- Takahashi had a meeting on the place with Flaminio and Aso.
- The place has not decided yet. Next meeting will be held on 25th.
- Measured 6 sets were transported to Kamioka.
- Calibration is planed at the site from 5th in September.
- 6 sets were transported to Kamioka on 17th.
- Structure analysis was applied to the model.
- Bracket of primary coil: 102Hz, bracket of secondary coil: 124Hz, including ring (t=20mm): 100Hz
- The shape of adjustment hole will be changed from long circle to large circle.
- Designed adapter for primary coil.
- Considering set up for actuator.
- Coil bobbins of prototype were delivered on 19th.
- Amplitude of oscillator should be larger (now 1V).
- The bidding was announced on 17th. Two companies had contact.
- Suspension test using maraging wires was performed on 18th.
- This item should be added.
- Protection net, hoist tool, foot hold, handling tool were added as new items.
Next meeting: 2016/8/30 13:00
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