Differences between revisions 6 and 20 (spanning 14 versions)
⇤ ← Revision 6 as of 2017-02-17 11:34:13 →
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Editor: NobuyukiTanaka
Comment:
← Revision 20 as of 2017-02-17 16:32:55 → ⇥
Size: 6676
Editor: YoichiAso
Comment:
Deletions are marked like this. Additions are marked like this.
Line 12: Line 12:
Installation in Y-end:

13th(Mon)
  * Installed the protection net to the bottom of cross tube.
  * Released the keystone of BF. The weight of dummy payload was near the optimal load of BF.
14th(Tue)
  * Tuned the weight of dummy payload.
  * Started cabling around the BF and the dummy payload. Finished on 16th.
15th(Wed)
  * Started making the short cable for the LVDT on BF. Not finished.
  * Prepared the LVDT driver with the oscillator and the oscilloscope.
16th(Thu)
  * Cariblated the LVDT on BF.
  * Checked the range of FR on BF. It was about 2mm. Additional blades are necessary.
MISC
 * The setup of EQ stop for prototype test was withdrawn from ATC on 17th.
 * The 3.3m maraging wire will be treated at Himeji facility of Kinzoku-giken. It takes one month.
Line 13: Line 31:
 * Adjust the BF.
 * Assemble the BF damper.
 * Assemble the EQ stop for F3 and set the F3.
Line 16: Line 37:
 * Hirata-san:
  * Worked on the PR optic removal jig.
  * Worked on getting modified quotes for PR/SR/BS parts.
 * Enzo-san
  * Worked on getting his drivers license.
  * Worked on getting familiar with the Type B circuit diagram.
 * Mark, Fabian (at Kamioka):
  * Tried different strategies for getting the IRM-IM EQ stops and IRM OSEMs to line up simultaneously.
  * Realized that the main problem was that the pitch of the BS had changed relative to the IM (presumably due to slight slippage of the wires) so the IM had to be pitched up by 16 mrad to get the BS pitched slightly down (4.7 mrad).
  * Took the sides off the IRM to get access to the clamps and tightened them to prevent further slips.
  * Rebalanced the IM to be level in pitch (and roll).
  * Reassembled the IRM and aligned the IRM-IM EQ stops - this time it was easy.
  * Adjusted the IRM and RM OSEMs to mid-range.
  * Got Kokeyama's new real-time model working and started TFs.
  
Line 17: Line 53:
 * Mark and Enzo come to Kamioka and work on rack and cabling.
 * Fabian works on design, including SR assembly frame.
 * Hirata-san works on procurement.
=== Type-Bp (Shoda) ===
Line 18: Line 58:
=== Type-Bp (Shoda) ===
Line 20: Line 59:
 * Checked the optical bench suspension parts
  * Optical bench magnetic damper is in Akeno, delivered on Feb. 27th.
  * Jigs to arrange magnets on the optical bench magnetic damper is not designed nor procured.
  * Diameter of the head of the suspension rods are different from what we ordered. -> Asking company to make the correct ones.
  * Hooking screws cannot go smoothly even they are SDC coated. -> Asking to make the new ones loosely.
  * Cu plates for eddy current damping are oxidized so much. They do not look clean. just covered by bubble packs.

 * Assembled the whole stages
  * Not suspended yet.
  * Found the holes for suspension rods are too small. The company made a mistake on the drawing update.
   Two plates at Kamioka will be sent to the company. The other plate was re-machined at Mitaka.
  * Cabling around BF takes a lot of time...

 * BF LVDT temporally circuits were made by Miyo-kun, Someya-san, and Hashimoto-san.

 * Second test assembly of BFRM at Mitaka
  * ATC re-machined the holes for suspension rods. -> Will be sent to Kamioka.
  * BFRM was properly suspended.
Line 21: Line 79:
 * Suspend BF & BFRM
  * Adjust weight of the BF
  * place the ballast masses and balance it
  * Set LVDT coils on BFRM and check signals

 * Traverser parts will be replaced by Uraguchi-san

==== Long term to do ====
 * Calibration of BF LVDT
 * Check acceleration during the installation using the chain-block and jacks
Line 31: Line 100:
  *Redesign(Front panel board for Main 4ch WDS Box and front panel for Ex-I/O Box)
Adjust the spacing of the front panel conectors.
 *Project-WDS Peripheral circuit PCB Design Ver2(Summary)[[http://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0062/E1706266/001/Project%20WDS%20Peripheral%20circuit%20PCB%20Design%20Ver2-Summry170216.pdf|PDF JGW-E1706266]]
  *Project-WDS Peripheral circuit PCB Design Version 2(Detail)[[http://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0062/E1706265/001/Project%20WDS%20Peripheral%20circuit%20PCB%20Design%20Ver2%28Detail%29170217.pdf|PDF JGW-E1706265]]
  *Project-WDS Ex-I/O PCB Design Ver 1(Summary)[[http://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0062/E1706268/002/Project%20WDS%20Ex-IO%20PCB%20Design%20Ver1_1%28Summary%29170217.pdf|PDF JGW-E1706268]]
  *Project-WDS Ex-I/O PCB Design Ver 1(Detail)[[http://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0062/E1706267/001/Project%20WDS%20Ex-IO%20PCB%20Design%20Ver1%28Detail%29170217.pdf|PDF JGW-E1706267]]		   *Redesign(Front panel board for Main 4ch WDS Box and front panel for Ex-I/O Box)Adjust the spacing of the front panel conectors.
   *Project-WDS Peripheral circuit PCB Design Ver2(Summary)[[http://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0062/E1706266/001/Project%20WDS%20Peripheral%20circuit%20PCB%20Design%20Ver2-Summry170216.pdf|PDF JGW-E1706266]]
    *Project-WDS Peripheral circuit PCB Design Version 2(Detail)[[http://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0062/E1706265/001/Project%20WDS%20Peripheral%20circuit%20PCB%20Design%20Ver2%28Detail%29170217.pdf|PDF JGW-E1706265]]
    *Project-WDS Ex-I/O PCB Design Ver 1(Summary)[[http://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0062/E1706268/002/Project%20WDS%20Ex-IO%20PCB%20Design%20Ver1_1%28Summary%29170217.pdf|PDF JGW-E1706268]]
    *Project-WDS Ex-I/O PCB Design Ver 1(Detail)[[http://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0062/E1706267/001/Project%20WDS%20Ex-IO%20PCB%20Design%20Ver1%28Detail%29170217.pdf|PDF JGW-E1706267]]
Line 40: Line 108:
  *ref Peripheral board(Power)[[http://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0061/E1706101/001/Project%20WDS%20PCB%20Design%20Ver1%28Detail%29170127.pdf|PDF]]
  *ref Reflow furnace[[https://akiba.dmm-make.com/about/machinesDetail/46|Japanese]]		    *ref Peripheral board(Power)[[http://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0061/E1706101/001/Project%20WDS%20PCB%20Design%20Ver1%28Detail%29170127.pdf|PDF]]
   *ref Reflow furnace[[https://akiba.dmm-make.com/about/machinesDetail/46|Japanese]]
Line 57: Line 125:
  * Shoda: 21 - 24   * Shoda: 20 - 24
Line 69: Line 137:
  * Chin Pin: 22-24 (Type-Bp)
Line 72: Line 141:
  * Takahashi:
  * Shoda:
  * Mark:
  * Fabian:
  * Okutomi:		   * Takahashi: 27 - 3/2
  * Shoda: 27 - 3/2
  * Mark: 27 - 3/2
  * Fabian: 27 - 3/2
  * Okutomi: 27 - 3/2
Line 79: Line 148:
  * Hirata:
  * Sato:		   * Hirata: 27 - 3/2
  * Sato: 
Line 82: Line 151:
  * Hashimoto (Hosei Univ.):
 * Someya (Hosei Univ.):		   * Hashimoto (Hosei Univ.): 27 - 3/2
Line 86: Line 154:
  * Perry: 3/1 -
Line 88: Line 157:
On 2017/2/24(Fri) in Mitaka On 2017/2/24(Fri)

Agenda/Minutes of the VIS Meeting on 2017/2/17

2017/2/17 13:30 -

Participants:

Progress report

Schedule Chart : (PDF,MPP)

Type-A (Takahashi)

Past week report

Installation in Y-end:

13th(Mon)

  • Installed the protection net to the bottom of cross tube.
  • Released the keystone of BF. The weight of dummy payload was near the optimal load of BF.

14th(Tue)

  • Tuned the weight of dummy payload.
  • Started cabling around the BF and the dummy payload. Finished on 16th.

15th(Wed)

  • Started making the short cable for the LVDT on BF. Not finished.
  • Prepared the LVDT driver with the oscillator and the oscilloscope.

16th(Thu)

  • Cariblated the LVDT on BF.
  • Checked the range of FR on BF. It was about 2mm. Additional blades are necessary.

MISC

  • The setup of EQ stop for prototype test was withdrawn from ATC on 17th.
  • The 3.3m maraging wire will be treated at Himeji facility of Kinzoku-giken. It takes one month.

Plan for coming weeks

  • Adjust the BF.
  • Assemble the BF damper.
  • Assemble the EQ stop for F3 and set the F3.

Type B (Mark)

Past week report

  • Hirata-san:
    • Worked on the PR optic removal jig.
    • Worked on getting modified quotes for PR/SR/BS parts.
  • Enzo-san
    • Worked on getting his drivers license.
    • Worked on getting familiar with the Type B circuit diagram.
  • Mark, Fabian (at Kamioka):
    • Tried different strategies for getting the IRM-IM EQ stops and IRM OSEMs to line up simultaneously.
    • Realized that the main problem was that the pitch of the BS had changed relative to the IM (presumably due to slight slippage of the wires) so the IM had to be pitched up by 16 mrad to get the BS pitched slightly down (4.7 mrad).
    • Took the sides off the IRM to get access to the clamps and tightened them to prevent further slips.
    • Rebalanced the IM to be level in pitch (and roll).
    • Reassembled the IRM and aligned the IRM-IM EQ stops - this time it was easy.
    • Adjusted the IRM and RM OSEMs to mid-range.
    • Got Kokeyama's new real-time model working and started TFs.

Plan for coming weeks

  • Mark and Enzo come to Kamioka and work on rack and cabling.
  • Fabian works on design, including SR assembly frame.
  • Hirata-san works on procurement.

Type-Bp (Shoda)

Past week report

  • Checked the optical bench suspension parts
    • Optical bench magnetic damper is in Akeno, delivered on Feb. 27th.
    • Jigs to arrange magnets on the optical bench magnetic damper is not designed nor procured.

    • Diameter of the head of the suspension rods are different from what we ordered. -> Asking company to make the correct ones.

    • Hooking screws cannot go smoothly even they are SDC coated. -> Asking to make the new ones loosely.

    • Cu plates for eddy current damping are oxidized so much. They do not look clean. just covered by bubble packs.
  • Assembled the whole stages
    • Not suspended yet.
    • Found the holes for suspension rods are too small. The company made a mistake on the drawing update.
      • Two plates at Kamioka will be sent to the company. The other plate was re-machined at Mitaka.
    • Cabling around BF takes a lot of time...
  • BF LVDT temporally circuits were made by Miyo-kun, Someya-san, and Hashimoto-san.
  • Second test assembly of BFRM at Mitaka

    • ATC re-machined the holes for suspension rods. -> Will be sent to Kamioka.

    • BFRM was properly suspended.

Plan for coming weeks

  • Suspend BF & BFRM

    • Adjust weight of the BF
    • place the ballast masses and balance it
    • Set LVDT coils on BFRM and check signals
  • Traverser parts will be replaced by Uraguchi-san

Long term to do

  • Calibration of BF LVDT
  • Check acceleration during the installation using the chain-block and jacks

IMMT (Ohishi)

Past week report

Plan for coming weeks

Watchdog system (Tanaka)

Past week report

  • Items that have been delivered.
    • PCB + Metal mask( for Main board(WSD) )
    • Cream solder
  • Redesign(Front panel board for Main 4ch WDS Box and front panel for Ex-I/O Box)Adjust the spacing of the front panel conectors.

Plan for coming weeks

  • I'm planning to perform surface mounting for Power board(WDS Main 4ch Box) in reflow furnace in Akihabara.Since a large PCB size( 320mm * 100mm) is required,a large reflow furnace is necessary,so it can be borrowed in Akihabara(DMM-make site.And of course,paid).

    • ref Peripheral board(Power)PDF

    • ref Reflow furnaceJapanese

Safety

  • Incidents:
  • Foreseen risks
    • Type-A:
    • Type-B:
    • Type-Bp:

Discussion

  • Mirror disassembly jigs (Hirata)

Travel Plans

  • Travel (Week of 2/20):
    • Takahashi: 20- 24
    • Shoda: 20 - 24
    • Mark: 20 - 24
    • Fabian: 20 - 24
    • Okutomi: 20 - 22
    • Fujii:
    • Ishizaki: 20 - 24
    • Hirata: 20 - 24
    • Sato: 20 - 24
    • Enzo: 20 - 24
    • Hashimoto (Hosei Univ.): 20 - 24
    • Ohishi:
    • Tanaka:
    • Chin Pin: 22-24 (Type-Bp)
  • Travel (Week of 2/27):
    • Takahashi: 27 - 3/2
    • Shoda: 27 - 3/2
    • Mark: 27 - 3/2
    • Fabian: 27 - 3/2
    • Okutomi: 27 - 3/2
    • Fujii:
    • Ishizaki:
    • Hirata: 27 - 3/2
    • Sato:
    • Enzo:
    • Hashimoto (Hosei Univ.): 27 - 3/2
    • Ohishi:
    • Tanaka:
    • Perry: 3/1 -

Next meeting

On 2017/2/24(Fri)

March VIS F2F: March 3

KAGRA/Subgroups/VIS/VISMinutes20170217 (last edited 2017-02-17 21:18:27 by YoichiAso)