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2018/4/20 13:30 - 2018/4/20 13:30 - 15:20
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Participants: Participants: Mark, Shoda, Takahashi, Sato, Aso, Okutomi, Ishizaki, Tanioka, Eleonora, Enzo, Fujii, Hirata, Akutsu, Tanaka
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[X-front]
  * Bent and formed six blades to mount on the TF base.
  * Mounted the blades on the TF base.
  * Put the damper ring with magnets on the F1.
  * Mounted the PI on the bridge frame with the maraging wire.
  * Suspended the filter chain from the TF. Needed load was about 700kg for the TF in spite of target load of 580kg.
  * Removed one blade and rearranged two blade. The TF could work without additional load.
  * Suspended the damper ring from the TF base. One hook screw galled.
  * Cabled between the F1 and the upper small hexagon.
  * Inserted the wire clamp.
  * Dismounted the PI and bridge frame.
  * Checked the cable connections.
  * Lifted down the F1 into the corrugate tube. The top ring sit on the frame lock.
  * Installed the PI into the top chamber.
Line 17: Line 33:
[X-front]
  * Cable to the feedthroughs.
  * Set the ACCs.
  * Calibrate the LVDTs for the BF damper and the IP.
Line 18: Line 39:
==== Past week report ====
==== Plan for coming weeks ====		 ==== Report for week of 4/9 ====
 * We packed away the SRM SF and BF.
 * After several failed attempts with one secondary prism, Mark finished the SR3 prism/magnet gluing.
 * Tanioka-kun built two IRMs (less OSEMs).
 * Enzo built an RM.
 * Kozu-kun and Enzo calibrated one set of 6 IM OSEMs for SR3. (6 OSEMs for SRM remain to be done.)
 * Hirata-san aligned the assembly frame, installed the interface bars and IM ring, and installed the IM.
 * Eleonora and Izumi-san revisited the BS length to tilt coupling, which had degraded, and got it working again.
Line 21: Line 48:
==== Plan for week of 4/23 ====
 * Shoda-san at Mitaka.
 * Hirata-san at Kamioka Mon-Wed, then Mitaka.
 * Kozu-kun at Kamioka Wed-Fri (but may be working with PEM on Fri).
 * Others (Mark, Enzo, Tanioka-kun) at Kamioka full week
 * --
 * Continue SR3 Hang
  * Hang optic.
  * Hang RM.
  * Cable RM OSEMs.

==== Plan for week of 4/30 ====
 * Shoda-san at Mitaka.
 * Mark, Enzo at Kamioka Mon-Wed or TBD.
 * Others having fun doing Golden Week stuff.
 * --
 * Observe KAGRA Phase 1 operations, assist if problems arise.
 * Do BF TFs.
 * Continue SR3 hang.

==== To-Do Lists, Schedule ====
 * [[KAGRA/Subgroups/VIS/TypeB/March2018]]
 * [[KAGRA/Subgroups/VIS/TypeB/April2018]]
 * [[KAGRA/Subgroups/VIS/TypeB/ToDoBS]]
 * [[KAGRA/Subgroups/VIS/TypeB/ToDoSR]]
 * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=7779|JGW-L1807779-v1 Type B Schedule (SR)]]

==== Vacation Info ====
 * Fabian vacation, 3/26-4/27 (then gone).
Line 29: Line 85:
=== Watchdog system (Tanaka) === === LVDT Driver (Tanaka) ===
Line 36: Line 92:
 * Incidents:  * Incidents: no incident
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 * Composite SRM design (Shoda)
 * ETMY tower repair (Takahashi, Okutomi)
 * Phase 1 Operation Reschedule
 * LVDT drivers
  * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/OpsManual/LVDT#stocktake|Staocktake]]
  * Buy 10 sets
  * Check the broken boards in Mitaka		 === Composite SRM design (Shoda) ===
 * After some discussions, a new idea of gluing the HR surface to a PEEK ring emerged.
 * Shoda-san will elaborate on the idea and report to the relevant people.

=== ETMY tower repair (Takahashi, Okutomi) ===
 * According to Okutomi-kun's TF measurements, even the F3 stage may be stuck.
 * We should be able to release the F3 GAS by adjusting the mass on the BF from the cross-tube.
 * We will try this before O3.
 * Takahashi-san will make a schedule for the ETMY repair works by the next VIS meeting.

=== [[https://www.dropbox.com/s/u685czkj8gddd52/Chief180402%E3%80%80Phase1%20after%20experiments.pdf?dl=0|Phase 1 Operation Reschedule]]
 * Mark, Enzo, Okutomi, Tanioka, Kozu will join the operation.
 * Shoda-san will join remotely through Skype or something (communication method will be announced by Mark)

=== LVDT drivers ===
 * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/OpsManual/LVDT#stocktake|Staocktake]]
 * Buy 10 sets
 * Check the broken boards in Mitaka
 * Enzo will bring the broken LVDT box into the site again to check if the remaining channels are alive or not.
Line 54: Line 122:
  * Takahashi:
  * Okutomi:
  * Sato:		   * Takahashi: 23 -27
  * Okutomi: 23 -
  * Sato: 24 -27
Line 58: Line 126:
  * Mark:
  * Hirata:
  * Enzo:		   * Mark: 23 -27
  * Hirata: 23 -25
  * Enzo: 23 -27
Line 63: Line 131:
  * Fujii:
  * Tanioka:		   * Fujii: 23 -27
  * Tanioka: 23 -
Line 66: Line 134:
  * Kozu (ICRR):   * Kozu (ICRR): 25 -27
Line 72: Line 140:
  * Okutomi:   * Okutomi: - 5/3
Line 75: Line 143:
  * Mark:   * Mark: 4/31 - 5/2
Line 77: Line 145:
  * Enzo:   * Enzo: 4/31 - 5/2
Line 81: Line 149:
  * Tanioka:   * Tanioka: - 5/6
Line 83: Line 151:
  * Kozu (ICRR):   * Kozu (ICRR): 4/30 - 5/1

Agenda/Minutes of the VIS Meeting on 2018/4/20

2018/4/20 13:30 - 15:20

Participants: Mark, Shoda, Takahashi, Sato, Aso, Okutomi, Ishizaki, Tanioka, Eleonora, Enzo, Fujii, Hirata, Akutsu, Tanaka

Progress report

Schedule Chart

Type-A : (PDF/MPP)

Type-B: (PDF/MPP)

Type-A (Takahashi)

Past week report

[X-front]

  • Bent and formed six blades to mount on the TF base.
  • Mounted the blades on the TF base.
  • Put the damper ring with magnets on the F1.
  • Mounted the PI on the bridge frame with the maraging wire.
  • Suspended the filter chain from the TF. Needed load was about 700kg for the TF in spite of target load of 580kg.
  • Removed one blade and rearranged two blade. The TF could work without additional load.
  • Suspended the damper ring from the TF base. One hook screw galled.
  • Cabled between the F1 and the upper small hexagon.
  • Inserted the wire clamp.
  • Dismounted the PI and bridge frame.
  • Checked the cable connections.
  • Lifted down the F1 into the corrugate tube. The top ring sit on the frame lock.
  • Installed the PI into the top chamber.

Plan for coming weeks

[X-front]

  • Cable to the feedthroughs.
  • Set the ACCs.
  • Calibrate the LVDTs for the BF damper and the IP.

Type B (Mark)

Report for week of 4/9

  • We packed away the SRM SF and BF.
  • After several failed attempts with one secondary prism, Mark finished the SR3 prism/magnet gluing.
  • Tanioka-kun built two IRMs (less OSEMs).
  • Enzo built an RM.
  • Kozu-kun and Enzo calibrated one set of 6 IM OSEMs for SR3. (6 OSEMs for SRM remain to be done.)
  • Hirata-san aligned the assembly frame, installed the interface bars and IM ring, and installed the IM.
  • Eleonora and Izumi-san revisited the BS length to tilt coupling, which had degraded, and got it working again.

Plan for week of 4/23

  • Shoda-san at Mitaka.
  • Hirata-san at Kamioka Mon-Wed, then Mitaka.
  • Kozu-kun at Kamioka Wed-Fri (but may be working with PEM on Fri).
  • Others (Mark, Enzo, Tanioka-kun) at Kamioka full week
  • --
  • Continue SR3 Hang
    • Hang optic.
    • Hang RM.
    • Cable RM OSEMs.

Plan for week of 4/30

  • Shoda-san at Mitaka.
  • Mark, Enzo at Kamioka Mon-Wed or TBD.
  • Others having fun doing Golden Week stuff.
  • --
  • Observe KAGRA Phase 1 operations, assist if problems arise.
  • Do BF TFs.
  • Continue SR3 hang.

To-Do Lists, Schedule

Vacation Info

  • Fabian vacation, 3/26-4/27 (then gone).

Type-Bp (Shoda)

Past week report

Plan for coming weeks

OMMT & OSTM (Ohishi)

Past week report

Plan for coming weeks

LVDT Driver (Tanaka)

Past week report

Plan for coming weeks

Other site works

Safety

  • Incidents: no incident
  • Foreseen risks
    • Type-A:
    • Type-B:
    • Type-Bp:

Discussion

Composite SRM design (Shoda)

  • After some discussions, a new idea of gluing the HR surface to a PEEK ring emerged.
  • Shoda-san will elaborate on the idea and report to the relevant people.

ETMY tower repair (Takahashi, Okutomi)

  • According to Okutomi-kun's TF measurements, even the F3 stage may be stuck.
  • We should be able to release the F3 GAS by adjusting the mass on the BF from the cross-tube.
  • We will try this before O3.
  • Takahashi-san will make a schedule for the ETMY repair works by the next VIS meeting.

=== Phase 1 Operation Reschedule

  • Mark, Enzo, Okutomi, Tanioka, Kozu will join the operation.
  • Shoda-san will join remotely through Skype or something (communication method will be announced by Mark)

LVDT drivers

  • Staocktake

  • Buy 10 sets
  • Check the broken boards in Mitaka
  • Enzo will bring the broken LVDT box into the site again to check if the remaining channels are alive or not.

Travel Plans

  • Travel (Week of 4/23):
    • Takahashi: 23 -27
    • Okutomi: 23 -
    • Sato: 24 -27
    • Ishizaki:
    • Mark: 23 -27
    • Hirata: 23 -25
    • Enzo: 23 -27
    • Shoda:
    • Ohishi:
    • Fujii: 23 -27
    • Tanioka: 23 -
    • Tanaka:
    • Kozu (ICRR): 25 -27
    • Arai (ICRR):
  • Travel (Week of 4/30):
    • Takahashi:
    • Okutomi: - 5/3
    • Sato:
    • Ishizaki:
    • Mark: 4/31 - 5/2
    • Hirata:
    • Enzo: 4/31 - 5/2
    • Shoda:
    • Ohishi:
    • Fujii:
    • Tanioka: - 5/6
    • Tanaka:
    • Kozu (ICRR): 4/30 - 5/1
    • Arai (ICRR):

Next meeting

On 2018/4/27(Fri)

KAGRA/Subgroups/VIS/VISMinutes20180420 (last edited 2018-04-20 16:52:31 by YoichiAso)