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Revision 2 as of 2018-02-09 10:18:49
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Revision 17 as of 2018-04-15 18:23:40
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Editor: MarkBarton
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2018/2/9 13:30 - 2018/2/9 13:30 - 15:00
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Participants: Participants: Mark, Hirata, Fabian, Izhizaki, Aso, Takahashi, Ohishi, Shoda, Tanaka, Sato, Okutomi, Akutsu
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Type-B: ([[TBD|PDF]],[[TBD|MPP]])

 * Type-A:
 * Type-B:
Type-B: ([[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|PDF/MPP]])
Line 18: Line 15:

[X-front]
  * The delivery of the maraging rod was deley. We didn't go to hunging by the short rod.
  * Attached magnets to the primary coils and made interconnect cables.
  * Installed the protection net into the cross tube.
  * Opened the top chamber.
  * Installed the frame lock.
  * Attached the corn bellows onto the bottom of top chamber.
  * Assembling the side stoppers for SFs.
  * The optimal load of BF (190kg) is not acceptable for the cryo-payload. Designing an additional FR.

[X-end]
  * Attached the additional vacuum gauge to the top chamber. The pressure was 0.16Pa.
  * Checked the connection for LVDT on the F0-BF.

[Y-end]
  * The position of IP was corrected so that the torsion mode frequency can be the lowest.
  * Started the cool down of EYC cryostat on 7th.

[Broken blades]
  * Franco reported about the sample of broken blades. The sample has two different zones.
  * Checked dimensions of some blades. The width was the same, but the thickness was different.
  * Dismounted the blade for SRM from the arc jig.
  * Nikhef can investigate the broken blade too.
  * No information from the maker.
  * Asking the companies about the optimal thickness as material for new blades.
 
Line 19: Line 43:
  * Hung the DP by the short rod.
  * Attached the additional FR and tune the BF again.
Line 21: Line 47:
==== Past week report ====
==== Plan for coming weeks ====
==== Report for week of 2/5 ====
 * Mark made two sets of in-air pico splitter cables (each with a triple for IM and a double for BF) for SR2 and SR3.
 * Fabian, Hirata-san and Kozu-kun worked on cabling and testing the IM pitch/roll/yaw picos, the BF FR and the BF LVDT. The LVDT connections were initially unreliable and Hirata-san had to redo the pins on the coil wires.
 * Fabian installed ballast masses in the BF.
 * Mark worked on schedule.
 * Mark did inventory of the stepper motor drivers (many were not accounted for on the wiki and/or JGWDoc and one is missing) and reserved two for SR3.
 * We emptied out the external cleanroom in preparation for installing SS sheet.
Line 24: Line 55:
==== Plan for week of 2/13 ====
 * No work Monday (建国記念の日の振替休日)
 * Enzo on vacation
 * Hirata-san at Mitaka Tue (self-evaluation interview).
 * Shoda-san at Mitaka.
 * All others at Kamioka.
 * -
 * Build IRM around IM.
 * Cable/test/adjust IM OSEMs.
 * Do TFs from IM OSEMs to IM OSEMs, OL pitch/yaw.
 * Send OSEM parts back to Mitaka so that Shoda-san can assemble them in Mitaka.

==== Plan for week of 2/19 ====
 * Enzo back from Tuesday.
 * Shoda-san at Mitaka.
 * Hirata-san at Mitaka Mon+Tue (to receive and wash parts).
 * All others at Kamioka.
 * -
 * Lift BF/... section and check total mass and balance.
 * Cable and test BF picos.
 * Add section of SS up to SF ring.
 * Bring in SF.
 * Hook BF/... section.
 * Route cables up to under SF.
 * Check/adjust total mass of BF/... section.

==== Plan for week of 2/26 ====
 * Shoda-san at Mitaka.
 * -
 * Add Cu segments to SF cap.
 * Lift SF/... section and check total mass and balance.

==== Vacation Info ====
 * Enzo 1/30-2/19.
 * Fabian 4/2-4/27 vacation (then gone).
Line 26: Line 92:
 * Simon and Arai-kun have set up length Oplev for PRM.
Line 27: Line 94:
 * Arai-kin, Miyo-kun, and Ohishi-san(?) will close the tank of PRM in order to release SF GAS.
Line 30: Line 98:
 * Ordered 4 custom-made small bellows for vertical vibration isolation.
 * Some drawings of the hanging jig parts were not updated.
   need to reorder some mechanical parts.
Line 31: Line 102:
 * OSEM test
Line 52: Line 123:
 * Incidents:  * Incidents: no incident
Line 55: Line 126:
  * Type-A:
  * Type-B:
  * Type-Bp:
  * Type-A: Crane works
  * Type-B: No crane work foreseen
  * Type-Bp: Crane works
Line 61: Line 132:
  * OMMT+OSTM: 14,000KJPY
  * TF(SR, BS, Type-A) replacement blades: 5,000KJPY
  * TF Yaw fishing rod modification: 300KJPY
  * Type-A fishing rod CuBe blades: 100KJPY
  * Mirror disassembly jig for BS: 300KJPY
  * Damper ring for SR: 4,000KJPY (2 sets)
  * SR ballast masses: 1,500KJPY
  * In-Vacuum Cable Assembly: 400KJPY
  * ETM PI Geophones: 3,000KJPY (6sets including pods)
  * Maraging rods: 2MJPY (For Type-A and B SF Damper rings. 12 rods)
  * Feedthrough: 3MJPY (11 more need to be purchased.)
Line 64: Line 147:
  * Takahashi:
  * Okutomi:
  * Sato:
  * Ishizaki:
  * Mark:
  * Fabian:
  * Hirata:
  * Takahashi: 13-16
  * Okutomi: 13-16
  * Sato: 13-16
  * Ishizaki: 13-16
  * Mark: 13-16
  * Fabian: 13-16
  * Hirata: 14-16
Line 76: Line 159:
  * Kozu (ICRR):
  * Arai (ICRR):
  * Kozu (ICRR): 13-16
  * Arai (ICRR): 13-16
Line 81: Line 164:
  * Takahashi:
  * Okutomi:
  * Sato:
  * Ishizaki:
  * Mark:
  * Fabian:
  * Hirata:
  * Enzo:
  * Takahashi: 19 - 23
  * Okutomi: 19 - 23
  * Sato: 19 - 23
  * Ishizaki: 19 - 23
  * Mark: 19 - 23
  * Fabian: 19 - 23
  * Hirata: 21 - 23
  * Enzo: 20 - 23
Line 93: Line 176:
  * Kozu (ICRR):   * Kozu (ICRR): 19 - 23

Agenda/Minutes of the VIS Meeting on 2018/2/9

2018/2/9 13:30 - 15:00

Participants: Mark, Hirata, Fabian, Izhizaki, Aso, Takahashi, Ohishi, Shoda, Tanaka, Sato, Okutomi, Akutsu

Progress report

Schedule Chart

Type-A : (PDF/MPP)

Type-B: (PDF/MPP)

Type-A (Takahashi)

Past week report

[X-front]

  • The delivery of the maraging rod was deley. We didn't go to hunging by the short rod.
  • Attached magnets to the primary coils and made interconnect cables.
  • Installed the protection net into the cross tube.
  • Opened the top chamber.
  • Installed the frame lock.
  • Attached the corn bellows onto the bottom of top chamber.
  • Assembling the side stoppers for SFs.
  • The optimal load of BF (190kg) is not acceptable for the cryo-payload. Designing an additional FR.

[X-end]

  • Attached the additional vacuum gauge to the top chamber. The pressure was 0.16Pa.
  • Checked the connection for LVDT on the F0-BF.

[Y-end]

  • The position of IP was corrected so that the torsion mode frequency can be the lowest.
  • Started the cool down of EYC cryostat on 7th.

[Broken blades]

  • Franco reported about the sample of broken blades. The sample has two different zones.
  • Checked dimensions of some blades. The width was the same, but the thickness was different.
  • Dismounted the blade for SRM from the arc jig.
  • Nikhef can investigate the broken blade too.
  • No information from the maker.
  • Asking the companies about the optimal thickness as material for new blades.

Plan for coming weeks

  • Hung the DP by the short rod.
  • Attached the additional FR and tune the BF again.

Type B (Mark)

Report for week of 2/5

  • Mark made two sets of in-air pico splitter cables (each with a triple for IM and a double for BF) for SR2 and SR3.
  • Fabian, Hirata-san and Kozu-kun worked on cabling and testing the IM pitch/roll/yaw picos, the BF FR and the BF LVDT. The LVDT connections were initially unreliable and Hirata-san had to redo the pins on the coil wires.
  • Fabian installed ballast masses in the BF.
  • Mark worked on schedule.
  • Mark did inventory of the stepper motor drivers (many were not accounted for on the wiki and/or JGWDoc and one is missing) and reserved two for SR3.
  • We emptied out the external cleanroom in preparation for installing SS sheet.

Plan for week of 2/13

  • No work Monday (建国記念の日の振替休日)
  • Enzo on vacation
  • Hirata-san at Mitaka Tue (self-evaluation interview).
  • Shoda-san at Mitaka.
  • All others at Kamioka.
  • -
  • Build IRM around IM.
  • Cable/test/adjust IM OSEMs.
  • Do TFs from IM OSEMs to IM OSEMs, OL pitch/yaw.
  • Send OSEM parts back to Mitaka so that Shoda-san can assemble them in Mitaka.

Plan for week of 2/19

  • Enzo back from Tuesday.
  • Shoda-san at Mitaka.
  • Hirata-san at Mitaka Mon+Tue (to receive and wash parts).
  • All others at Kamioka.
  • -
  • Lift BF/... section and check total mass and balance.
  • Cable and test BF picos.
  • Add section of SS up to SF ring.
  • Bring in SF.
  • Hook BF/... section.
  • Route cables up to under SF.
  • Check/adjust total mass of BF/... section.

Plan for week of 2/26

  • Shoda-san at Mitaka.
  • -
  • Add Cu segments to SF cap.
  • Lift SF/... section and check total mass and balance.

Vacation Info

  • Enzo 1/30-2/19.
  • Fabian 4/2-4/27 vacation (then gone).

Type-Bp (Shoda)

Past week report

  • Simon and Arai-kun have set up length Oplev for PRM.

Plan for coming weeks

  • Arai-kin, Miyo-kun, and Ohishi-san(?) will close the tank of PRM in order to release SF GAS.

OMMT & OSTM (Ohishi)

Past week report

  • Ordered 4 custom-made small bellows for vertical vibration isolation.
  • Some drawings of the hanging jig parts were not updated.
    • need to reorder some mechanical parts.

Plan for coming weeks

  • OSEM test

Watchdog system (Tanaka)

Past week report

  • Preparation for assembly of mass products.-->Ongoing.

  • Adjustment and approval to vendors(Implementation adjustments and approvals for circuit boards.)-->Ongoing.

    • The scheduled delivery date is 22th Feb(final).-->Adjusting.

Plan for coming weeks

  • Preparation for assembly of mass products.
  • Adjustment and approval to vendors(Implementation adjustments and approvals for circuit boards.)

Other site works

  • Feb 18: Black out of the Mozumi buildings
  • 2/26 - 3/9 Construction of the walls to isolate the arms better (for cleanliness)
  • 3/12 - 3/16 Installation of the control systems for the large GVs

Safety

  • Incidents: no incident
  • Foreseen risks
    • Type-A: Crane works
    • Type-B: No crane work foreseen
    • Type-Bp: Crane works

Discussion

  • Next FY budget
    • OMMT+OSTM: 14,000KJPY
    • TF(SR, BS, Type-A) replacement blades: 5,000KJPY
    • TF Yaw fishing rod modification: 300KJPY
    • Type-A fishing rod CuBe blades: 100KJPY

    • Mirror disassembly jig for BS: 300KJPY
    • Damper ring for SR: 4,000KJPY (2 sets)
    • SR ballast masses: 1,500KJPY
    • In-Vacuum Cable Assembly: 400KJPY
    • ETM PI Geophones: 3,000KJPY (6sets including pods)
    • Maraging rods: 2MJPY (For Type-A and B SF Damper rings. 12 rods)
    • Feedthrough: 3MJPY (11 more need to be purchased.)

Travel Plans

  • Travel (Week of 2/12):
    • Takahashi: 13-16
    • Okutomi: 13-16
    • Sato: 13-16
    • Ishizaki: 13-16
    • Mark: 13-16
    • Fabian: 13-16
    • Hirata: 14-16
    • Enzo:
    • Shoda:
    • Ohishi:
    • Fujii:
    • Tanaka:
    • Kozu (ICRR): 13-16
    • Arai (ICRR): 13-16
  • Travel (Week of 2/19):
    • Takahashi: 19 - 23
    • Okutomi: 19 - 23
    • Sato: 19 - 23
    • Ishizaki: 19 - 23
    • Mark: 19 - 23
    • Fabian: 19 - 23
    • Hirata: 21 - 23
    • Enzo: 20 - 23
    • Shoda:
    • Ohishi:
    • Fujii:
    • Tanaka:
    • Kozu (ICRR): 19 - 23
    • Arai (ICRR):

Next meeting

On 2018/2/16(Fri)

KAGRA/Subgroups/VIS/VISMinutes20180209 (last edited 2018-04-15 18:23:40 by MarkBarton)