Agenda/Minutes of the VIS Meeting on 2017/9/1

2017/9/1 13:30 - 15:30

Participants: Mark, Shoda, Ishizaki, Arai, Hirata, Okutomi, Takahashi, Aso, Kozu, Tanaka, Ohishi, Akutsu, Sato

Progress report

Schedule Chart : (PDF,MPP)

• Type-A:
• Type-B:
• Type-Bp:

Type-A (Takahashi)

Past week report

[X-end]

30th(Wed)

• Adjust the height of keystone in the F2 and F3 by the FR.
• Lifted down the EQ stop. The F2 stage sit on the frame lock.

31st(Thu)

• Extended the EQ stop to the F1 stage.
• Assembled some items inside the F1; cabling, replacement of receptacles, replacement of FR blades.
• Attached the Cu ring and the wire clamps onto the cap of F1.
• Closed the cap of F1. Though the insertion was very tight, the cap could be closed.

[Y-end]

31st(Thu)

• Making the control model with the CRY group.

1st(Fri)

• Trasported the bridge frame to the X-end.
• Making the control model with the CRY group.

Plan for coming weeks

• Installation of the Filter1 in X-end.

Type B (Mark)

Past week report

At Kamioka (Mark, Ohishi-san, Fabian, Enzo, Hirata-san, Yoshioka-kun, Kozu-kun):

• We solved the problem with the OSEMs: cables had been plugged into the confusingly named "PD current monitor" outputs (actually LED current monitors), not the "OSEM outputs".
• We solved a problem with the real-time model freezing which turned out to be the IO chassis having lost power.
• We took some mass off the IM to allow for the weight of the cables, and readjusted it in pitch and roll.
• We aligned the IRM to the IM and set the OSEMs to mid-range.
• We added ballast to the BF.
• We changed the receptacles for the SF-BF rod. The low receptacle did not fit properly into the BF keystone and Hirata-san had to file it.
• We fixed a broken wire on the BF yaw pico, retested the pico and added the BF cap.
• We cabled and tested the BF cap picos.
• We lifted the BF and weighed and balanced it.
• We installed the SF ring and brought in the SF.
• We installed the Cu segments on the SF.
• We cabled the SF LVDT and did a quick test (not a full calibration).
• We replaced non-vacuum compatible cables in the PI, removed various sticky labels and wiped it with ethanol.
• We tried to hook the SF-BF rod but found the hole in the hex cable clamp was too small for the 8 mm rod head. We enlarged the hole but then found the PEEK pieces were too loose. We tried using foil, but then managed to lose a PEEK piece into the BF, so we will need to remove the cap of the BF to get it.

Plan for week of 9/4

Mark, Fabian, Enzo (Tue-Fri), Ohishi-san, Hirata-san, Yoshioka-kun (Tue, Wed, Fri), Kozu-kun (Thu, Fri)

• Retrieve PEEK piece from BF.
• Crane SF back in.
• Suspend BF/IRM/IM/RM/BS.
• Test SF FR.
• Calibrate SF LVDT.
• Install SF cap; route cables.
• Lift and weigh SF/BF/IRM/IM/RM/BS.
• Adjust SF ballast.

Plan for week of 9/13

Mark (except Wed), Fabian (except ASJ), Enzo, Ohishi-san, Hirata-san, Yoshioka-kun (Tue, Wed, Fri), Kozu-kun

• Prepare magnet ring.
• Bring in PI.
• Route cables.
• Suspend SF/..., adjust tilt of SF and total mass.
• Adjust damper gap.

Type-Bp (Shoda)

Past week report

• IM OSEMs tuned.
  • We tuned the OSEM DC position again, since we changed the IRM alignment last Friday.
  • We checked the TFs of IM. So far, the TF seems to be OK but the coherence is not good at lower frequencies. I should check later.
• BF assembled
  • BF cap was closed, and assembled BF LVDT primary coils. The IM/TM cables are lead to the top of the BF cap.
• Top plate assembled
  • We also assembled the top plate/Traverser unit to the suspension.
• k1pr0 IO chassis
  • Miyakawa-san changed the power supply for the IO chassis. Now the IO chassis seems to be working.
  • All 3 models cannot be started at the same time when we start the RT computer. It is necessary to start the model one by one.
  • However, the PRM model is not yet running properly, since all the VIS model cannot be compiled because of an unknown error. One of the Library model might be the reason.

Plan for coming weeks

• assemble SF & calibrate SF LVDT

• Hang BF and tune the weight
• Assemble the BFRM

IMMT (Ohishi)

Past week report

Plan for coming weeks

Watchdog system (Tanaka)

Past week report

• I examined specific cost and necessary measures to set up for WDS in Kamioka.And I held a meeting to make estimates with several vendors.-->Budget plan.(But the accuracy is low because there is no data necessary for integrating the estimate.)However,this is a Japanese report.JGW-E1707142(PDF).

  • -->Waiting for an estimate.

Plan for coming weeks

• Creation of extended I/O PCB(plot type (With the Main 4ch WDS box and I/O box,I/O board For relay).-->Ongoing.

• Start production of equipment-->PCB check for main board(WDS main board).Ongoing.

Other site works

• End of Aug. to Nov.: Mozumi entrance will be closed
• Sept. 5: Inspection by Labor Standards Inspection Office

Safety

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

Discussion

Type-A

• There are not enough cables to complete ETMX Type-A
  • We need 170 m of vacuum compatible cables
  • We will use non-vacuum compatible cables for the moment (until Okutomi-kun's test)
  • Before connecting to the CRY payload, we will swap the non-vac cables to vacuum compatible ones.
  • Production of the vac-compat cables is an imminent issue.
    • Bulk cable (線材) is now under bidding (for 900m, delivery deadline: the end of Nov.).
    • We will ask the company who win the bidding to deliver 200m cable

Travel Plans

• Travel (Week of 9/4):
  • Takahashi: 4-7
  • Okutomi: 4-8
  • Sato: 4-8
  • Ishizaki: 4-8
  • Mark: 4-8
  • Fabian: 4-8
  • Hirata: 4-8
  • Enzo: 5-8
  • Shoda: 4-8
  • Ohishi: 4-8
  • Fujii:
  • Tanaka:
  • Yoshioka (Toyama):
  • Kozu (ICRR): 7-8
  • Arai (ICRR): 4-8
• Travel (Week of 9/11):
  • Takahashi: 11-12 (13 JPS)
  • Okutomi: 11-15
  • Sato: 11-15
  • Ishizaki:
  • Mark: 11-15 (13)
  • Fabian: 14-15
  • Hirata: 11-15
  • Enzo: 11-15
  • Shoda: 11-15 (13)
  • Ohishi: 14-15
  • Fujii:
  • Tanaka:
  • Yoshioka (Toyama):
  • Kozu (ICRR): 11-15
  • Arai (ICRR): 11-15

Next meeting

On 2017/9/8(Fri)