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Revision 2 as of 2018-10-17 15:25:39
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Revision 3 as of 2018-10-19 08:30:16
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Deletions are marked like this. Additions are marked like this.
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[X-front]
  * Corrected the tilt of IP base by jack up/down of the corn bellows.
  * Adjusted the position of IP by the stepping motors.
  * Aligned the TM by the yaw picomoter in the BF.

[X-end]
  * Corrected the tilt of IP base by jack up/down of the corn bellows.
  * It was difficult to adjust the position of IP by the stepping motors due to the tight stopper setting.
  * Vented the EXV chamber and open the top chamber.
  * Released the stopper for IP more.
  * Adjusted the position of IP by hand/stepping motors.
  * Aligned the TM by the yaw picomoter in the BF.
  * Closed the top chamber and started the evacuation.
  * Followed the drift of IP position by the stepping motors during the evacuation.

[Y-front]
  * Investigated the 70Hz peak in the spectrum of IP LVDTs. Changed the modulation frequency from 10,000Hz to 10,003Hz.
Line 20: Line 39:

[Y-front]
  * Replacement of the FR parts for BF. (10/22, 23)

[Y-end]
  * Assembly of the geophone pods and installation. (10/24)

Agenda/Minutes of the VIS Meeting on 2018/10/19

2018/10/19 13:30 -

Zoom Meeting

Participants:

Progress report

Schedule Chart

Type-A : (PDF/MPP)

Type-B: (PDF/MPP)

Type-C: (XLSX)

Type-A (Takahashi)

Past week report

[X-front]

  • Corrected the tilt of IP base by jack up/down of the corn bellows.
  • Adjusted the position of IP by the stepping motors.
  • Aligned the TM by the yaw picomoter in the BF.

[X-end]

  • Corrected the tilt of IP base by jack up/down of the corn bellows.
  • It was difficult to adjust the position of IP by the stepping motors due to the tight stopper setting.
  • Vented the EXV chamber and open the top chamber.
  • Released the stopper for IP more.
  • Adjusted the position of IP by hand/stepping motors.
  • Aligned the TM by the yaw picomoter in the BF.
  • Closed the top chamber and started the evacuation.
  • Followed the drift of IP position by the stepping motors during the evacuation.

[Y-front]

  • Investigated the 70Hz peak in the spectrum of IP LVDTs. Changed the modulation frequency from 10,000Hz to 10,003Hz.

Plan for coming weeks

[Y-front]

  • Replacement of the FR parts for BF. (10/22, 23)

[Y-end]

  • Assembly of the geophone pods and installation. (10/24)

Type B (Mark)

Past week report

Plan for coming weeks

Type-Bp (Shoda)

Past week report

Plan for coming weeks

OMMT & OSTM (Ohishi)

Past week report

Plan for coming weeks

VIS electronics (Tanaka)

Past week report

Plan for coming weeks

Other site works

Safety

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

Discussion

Travel Plans

  • Travel (Week of 10/22):
    • Takahashi:
    • Okutomi:
    • Sato:
    • Lucia:
    • Fabian:
    • Mark:
    • Hirata:
    • Enzo:
    • Shoda:
    • Ohishi:
    • Fujii:
    • Tanioka:
    • Tanaka:
    • Kozu (ICRR):
    • Arai (ICRR):
  • Travel (Week of 10/29):
    • Takahashi:
    • Okutomi:
    • Sato:
    • Lucia:
    • Fabian:
    • Mark:
    • Hirata:
    • Enzo:
    • Shoda:
    • Ohishi:
    • Fujii:
    • Tanioka:
    • Tanaka:
    • Kozu (ICRR):
    • Arai (ICRR):

Next meeting

On 2018/10/26(Fri)

KAGRA/Subgroups/VIS/VISMinutes20181019 (last edited 2018-10-19 15:10:16 by YoichiAso)