Differences between revisions 2 and 7 (spanning 5 versions)
⇤ ← Revision 2 as of 2018-08-30 17:10:04 →
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Editor: YoichiAso
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Editor: YoichiAso
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2018/8/31 13:30 - 2018/8/31 13:30 - 14:45
Line 7: Line 7:
Participants: Participants: Panwei, Takahashi, Sato, Lucia, Aso, Ohishi, Fabian, Okutomi, Mark, Fujii, Tanioka, Enzo, Kozu, Arai, Hirata
Line 17: Line 17:

[Y-front]
  * Tuned the TF. The screws to fix the blades at the keystone were loose. After fastening the screws tightly, the filter overloaded. Though the filter can work without compression, the tuning frequency is very high (~1Hz).
  * Calibrated the LVDTs for IP.
  * Set the ballast rings onto the IP
  * Attached the LVDT coils for BF damper, and cabled.
  * Set the ACCs on the IP.
  * Closed the top chamber.
  * Tuned the sensing/actuation matrix.

[X-front]
  * Replaced the blade for additional FR. The TF still overloads at least 10kg. Fixed the keystone.
  * Released the IP. Adjusted the horizontal position of IP.
  * Adjusted the height of cryo-payload.
  * Closed the chambers completely. Started the evacuation at 15:45 on 30th.

[Y-end]
  * Disconnected the cables for cryo-payload from the BF.
  * Unhooked the wire from the receptacle on the cryo-payload,
  * The cryo-payload was removed from the cryostat.
  * Unhooked the wire from the receptacle on the BF,
Line 18: Line 40:
[Y-end]
  * Installation of the dummy payload.
  * Tuning of BF and F3.

[Y-front]
  * Measurements of transfer functions.
  * Setting of controls.
Line 29: Line 58:
 * Completed all the mechanical parts design and waiting for the quotation.
 * Delivery date is 6th Oct.
Line 30: Line 61:
 * Make the screw list.
 * Preparation for the glueing.
Line 41: Line 73:
 * Incidents:  * Incidents: no incident
Line 44: Line 76:
  * Type-A:
  * Type-B:		   * Type-A: Handling the heavy dummy payload
  * Type-B: Crane work
Line 48: Line 80:
 * EX/EY TF blades: Use original (strong) blades. 3 of them each. Do the swap after O3.
Line 49: Line 82:
  * Shut down the suspension models then turn off analog electronics
  * EY: On Wed. Takahashi + Yokozawa
  * EX: Consult with Miyamoto
  * IX/IY: Shutdown on Friday by noon. (Takahashi)
  * Everything else: Shutdown on Friday by noon. (Type-B team)
Line 50: Line 88:
  * We want to use the flanges on the top hat.
 * Clean booth openings for letting in the crane
  * We will close SR2, SR3 openings soon
  * Many things will be brought into SRM from now. We will keep it open for the moment.
Line 53: Line 95:
  * Takahashi:   * Takahashi: 3 - 7
Line 55: Line 97:
  * Sato:
  * Lucia:		   * Sato: 
  * Lucia: 3 - 7 except 4
Line 58: Line 100:
  * Mark:
  * Hirata:
  * Enzo:		   * Mark: 3 - 7
  * Hirata: 4 - 7
  * Enzo: 3 - 6
Line 64: Line 106:
  * Fujii:
  * Tanioka:		   * Fujii: 3 - 7
  * Tanioka: 3 - 7
Line 67: Line 109:
  * Kozu (ICRR):   * Kozu (ICRR): 3 - 7
Line 71: Line 113:
  * Takahashi:   * Takahashi: 11 - 14
Line 73: Line 115:
  * Sato:
  * Lucia:		   * Sato: 11 - 14
  * Lucia: 10 - 14
Line 77: Line 119:
  * Hirata:
  * Enzo: 		  * Hirata: 11 - 14
  * Enzo: 10 - 13
Line 82: Line 124:
  * Fujii:
  * Tanioka:		   * Fujii: 11 - 14
  * Tanioka: 11 - 14
Line 85: Line 127:
  * Kozu (ICRR):   * Kozu (ICRR): 10 - 13

Agenda/Minutes of the VIS Meeting on 2018/8/31

2018/8/31 13:30 - 14:45

Zoom Meeting

Participants: Panwei, Takahashi, Sato, Lucia, Aso, Ohishi, Fabian, Okutomi, Mark, Fujii, Tanioka, Enzo, Kozu, Arai, Hirata

Progress report

Schedule Chart

Type-A : (PDF/MPP)

Type-B: (PDF/MPP)

Type-A (Takahashi)

Past week report

[Y-front]

  • Tuned the TF. The screws to fix the blades at the keystone were loose. After fastening the screws tightly, the filter overloaded. Though the filter can work without compression, the tuning frequency is very high (~1Hz).
  • Calibrated the LVDTs for IP.
  • Set the ballast rings onto the IP
  • Attached the LVDT coils for BF damper, and cabled.
  • Set the ACCs on the IP.
  • Closed the top chamber.
  • Tuned the sensing/actuation matrix.

[X-front]

  • Replaced the blade for additional FR. The TF still overloads at least 10kg. Fixed the keystone.
  • Released the IP. Adjusted the horizontal position of IP.
  • Adjusted the height of cryo-payload.
  • Closed the chambers completely. Started the evacuation at 15:45 on 30th.

[Y-end]

  • Disconnected the cables for cryo-payload from the BF.
  • Unhooked the wire from the receptacle on the cryo-payload,
  • The cryo-payload was removed from the cryostat.
  • Unhooked the wire from the receptacle on the BF,

Plan for coming weeks

[Y-end]

  • Installation of the dummy payload.
  • Tuning of BF and F3.

[Y-front]

  • Measurements of transfer functions.
  • Setting of controls.

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

  • Completed all the mechanical parts design and waiting for the quotation.
  • Delivery date is 6th Oct.

Plan for coming weeks

  • Make the screw list.
  • Preparation for the glueing.

VIS electronics (Tanaka)

Past week report

Plan for coming weeks

Other site works

  • Sept 3 (Mon): Crane inspection 9:00 - 12:00
  • Sept 5 (Mon): Crane inspection 9:00 - 13:00
  • Sept 10(Mon): Planned power outage

Safety

  • Incidents: no incident
  • Foreseen risks
    • Type-A: Handling the heavy dummy payload
    • Type-B: Crane work

Discussion

  • EX/EY TF blades: Use original (strong) blades. 3 of them each. Do the swap after O3.
  • Preparation for the power outage
    • Shut down the suspension models then turn off analog electronics
    • EY: On Wed. Takahashi + Yokozawa
    • EX: Consult with Miyamoto
    • IX/IY: Shutdown on Friday by noon. (Takahashi)
    • Everything else: Shutdown on Friday by noon. (Type-B team)
  • Clean air introduction port for SR chambers
    • We want to use the flanges on the top hat.
  • Clean booth openings for letting in the crane
    • We will close SR2, SR3 openings soon
    • Many things will be brought into SRM from now. We will keep it open for the moment.

Travel Plans

  • Travel (Week of 9/3):
    • Takahashi: 3 - 7
    • Okutomi:
    • Sato:
    • Lucia: 3 - 7 except 4
    • Ishizaki:
    • Mark: 3 - 7
    • Hirata: 4 - 7
    • Enzo: 3 - 6
    • Terrence:
    • Shoda:
    • Ohishi:
    • Fujii: 3 - 7
    • Tanioka: 3 - 7
    • Tanaka:
    • Kozu (ICRR): 3 - 7
    • Arai (ICRR):
  • Travel (Week of 9/10):
    • Takahashi: 11 - 14
    • Okutomi:
    • Sato: 11 - 14
    • Lucia: 10 - 14
    • Ishizaki:
    • Mark:
    • Hirata: 11 - 14
    • Enzo: 10 - 13
    • Terrence:
    • Shoda:
    • Ohishi:
    • Fujii: 11 - 14
    • Tanioka: 11 - 14
    • Tanaka:
    • Kozu (ICRR): 10 - 13
    • Arai (ICRR):

Next meeting

On 2018/9/7(Fri)

KAGRA/Subgroups/VIS/VISMinutes20180831 (last edited 2018-09-01 12:13:56 by MarkBarton)