Agenda/Minutes of the VIS Meeting on 2017/12/8

2017/12/8 13:30 -

Participants:

Progress report

Schedule Chart

Type-A : (PDF,MPP)

Type-B: (PDF,MPP)

• Type-A:
• Type-B:
• Type-Bp:

Type-A (Takahashi)

Past week report

Plan for coming weeks

Type B (Mark)

Past week report

• Mark analyzed the QPD data from Friday 12/1 and derived matrices to diagonalize the QPD, and calibrate output in µrad. In the process an error in the IM OSEM diagonalization was discovered: the P and Y gains were low by a factor 2.
• Mark re-zeroed the QPD after noting the micrometer readings so we can do TFs over the weekend.
• We prepared for the SR2 gluing:
  • We aligned the SR2 in the box with the wedge on the correct side.
  • We checked that the remachined BS prism holders fit on the PR2 mirror box.
  • We checked that with Tatsumi-san's support ring, the prisms would go on at the right height.
  • We checked the new magnet jigs.
• We glued ferromagnetic disks in a large number of IM flag tips and flag bases, and in the SR magnet jigs.
• We also glued SR magnets in the magnet bases.

==== Plan for week of 12/11

• Mark, Fabian, Enzo, Kozu-kun (Mon-Thu only), Hirata-san, Shoda-san at Kamioka.
• Mirror gluing.
• IM assembly and pico test.
• Assembly frame alignment and optical table centering.
• Move trolley system from SR3.
• OL setup.

Plan for week of 12/18

• Shoda-san vacation
• Mark, Fabian, Enzo, Kozu-kun at Kamioka Mon-Wed.

Vacation Info

• Mark 12/22-1/3

• Enzo, 12/21-12/27 (but not 12/28)

• Fabian 12/22-1/5
• Hirata-san 12/21-22 (conference)
• Shoda-san 12/18-21

Type-Bp (Shoda)

Past week report

• PR3 slipped so often during the IM adjustment -> optic was fixed to the RM.

Plan for coming weeks

OMMT & OSTM (Ohishi)

Past week report

Plan for coming weeks

Watchdog system (Tanaka)

Past week report

• Retest in Mitaka.-->There is no problem in operation test at all(The result is the same this week as well!!).

• Start ordering mass production version.-->Ongoing(Formal request for quotation from the vendors.).

  • Waiting for arrival of mailing(by paper quotation).

Plan for coming weeks

• Plan the operation test again at KAGRA-->

  • Actual test of WD operation(Retest).

  • The next on site test of the WDS: From 12/12(Tue) - 14(Thu) 11th:In Toyama,12th-14th:Kamioka,15th:Preparation day(Toyama->Tokyo).

Other site works

Safety

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

Discussion

2nd Brainstorming on how to exchange the payload part without completely disassembling the suspension chain

What to do with the Type-Bp tilt change ?

Travel Plans

• Travel (Week of 12/11):
  • Takahashi:
  • Okutomi:
  • Sato:
  • Ishizaki:
  • Mark:
  • Fabian:
  • Hirata:
  • Enzo:
  • Shoda:
  • Ohishi:
  • Fujii:
  • Tanaka:
  • Kozu (ICRR):
  • Arai (ICRR):
• Travel (Week of 12/18):
  • Takahashi:
  • Okutomi:
  • Sato:
  • Ishizaki:
  • Mark:
  • Fabian:
  • Hirata:
  • Enzo:
  • Shoda:
  • Ohishi:
  • Fujii:
  • Tanaka:
  • Kozu (ICRR):
  • Arai (ICRR):

Next meeting

On 2017/12/15(Fri) from 15:00 @ Control Room