= VIS Meeting on 2016/6/3 =
2016/6/3 13:30 -
Room 210
Participants:Takahashi, Sato, Ishizaki, Mark, Hirata, Fujii, Fabian, Aso, Shoda, Akutsu
== Overall Schedule ==
* The current overall schedule [[https://www.dropbox.com/s/zbhhxlyd79sqe1w/VIS-2016-04-15.pdf?dl=0|chart]].
= iKAGRA related activities =
== PR3 ==
* PR3 post-run work status (Fujii)
* TF and Q measuremnts were done. Now analyzing the data.
= bKAGRA preparation =
== Important Issues ==
* New meeting format (Aso)
* Each team will have individual meetings every week (F2F)
* Each team will report the progress at the plenary VIS meeting.
* Progress is checked against the schedule charts to be submitted by the team leaders by June 8th.
* The schedule chart should be updated whenever necessary
* After the progress check, important issues relevant to entire VIS team will be discussed
* The topics will be picked by Aso
* Everyone is welcome to suggest topics to Aso
* Will start the new format from the next week.
* Site check for the preparation of Type-A installation (Aso)
* Need check the transportation path of large items to the 2F of the end stations.
* Takahashi, Ishizaki, Sato will come to Kamioka in the week of July 4th contingent on Miyoki-san's availability
* [[KAGRA/Subgroups/VIS/TypeB/dummyBS|BS dummy mirror design]] (Mark)
* Larger reflector will be prepared by Akutsu-kun (will get quotes soon)
* Accelerometers for IP<
>
* Is Geophone too noisy for innertial damping in Kamioka ? (Shoda) [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5246|Slides]]
* If the noise of the Geophones is as described in the slides, using Geophone should be fine.
* However, the real noise of the Geophones is not well known. A measurement in Kamioka is necessary.
* '''Shoda or Fujii will do the measurements along with the NIKHEF accelerometers sometime in June'''
* NIKHEF accelerometers for BS
* Test status (Fujii)
* Resonant freq. and Q of the accelerometer were shifted from the previous measurements (still a mystery)
* Did ring down measurements
* Necessary parameters to convert the output to m/rtHz are obtained.
* Still analyzing the data
* '''Will present the results in the next VIS meeting'''
* #Which accelerometers for SR ?
* # Buy from NIKHEF ? How much is the cost ?
* # Get the design from NIKHEF and produce them in Japan (ATC) ?
* Pre-isolator assembly and tests<
>
* Need to make a plan for the assembly of the SRC PI.
* If possible assembly by Sato-san is better as he will do it for Type-A too.
* Takahashi will make more detailed schedule for PI assemblyto see if Sato-san can do the SRC work.
* Dummy payload design for Type-A<
>
* SEO is now considering if we can use the iKAGRA ETMs for this or not.
* Bottom Filter LVDT -> '''To be discussed at the next meeting'''<
>
* Virgo people wants to produce ones for us.
* Status ? (Raffaele)
* #Assembly frames
* We need to combine things into one contract
* Type-B assembly frame: '''order immediately (Takahashi)'''
== Common Issues ==
* Wide OSEM production (Akutsu)
* Flexible circuit status ?-> asked for quotation to the company (6/2).
=== Electronics ===
* List of requested electronics from VIS
* [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5193|The latest list]]
* '''Need to add satellite boxes for IMMT (2 of them) to the list (Takahashi)'''
* IMMT OSEM cables will be different from other OSEMs
* #Watch dog system (Tanaka)
* photo-MOS relay switch resistance fluctuation
* Noise requirement for the resistance fluctuation is necessary (Aso)
* If we require the resistance noise to be smaller than DAC noise, the allowed fluctuation is 10^-7 Ohm/sqrt(Hz)@10Hz.
* Asking Michimua-kun to calculate the requirements from the suspension response.
* Tanaka measured the photo-MOS relay resistance fluctuation-> 37mOhm RMS upper limit
* Will make spectrum of the resistance fluctuation.
== Type-B ==
* [[KAGRA/Subgroups/VIS/TypeB]]
* [[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!185&authkey=!AGcFDradxzrNJ00&ithint=folder,txt|Task list/schedule]]
* Type B Past Week Summary
* Fabian worked on IM and dummy BS assembly: [[https://photos.google.com/share/AF1QipMNVSExyP3TuyhK4s_VD-ARDlNoCPCf13ZDbHUlwOw14AKgj4XUe0vYg27dQ12icQ?key=SjJ0dXJ1bjN2OGVCN3d6RnoySEtFSjVJUmVwSlZR|photos1]], [[https://photos.google.com/share/AF1QipPQdoB5vYN1VcD32TkA4QSGldODvKRwiT5h-m122ahSpWmFyyrO5MX-9ajL1LeRIg?key=VFFuUVktcEtlMURQUldhZUlRcGFhbzNDeU5IN3NB|photos2]]
* A hole in a picomotor holder was too small. ATC staff solved this isue quickly and Hirata-san cleaned the piece.
* Some ballast discs for the dummy optic were dirty (seen by visual inspection). Hirata-san cleaned them.
* Some arrows were cleaned from the mirrors for the dummy optic.
* Hirata-san worked on checking Mirapro's assembly frame design - some minor issues with rail system found.
* Hirata-san measured another filter.
* Hirata-san washed a large batch of parts.
* All parts for gluing of dummy BS are in hand. We arranged with Tatsumi-san to glue magnets at Mitaka on 6/6, glue flags at Kashiwa on 6/8, and inspect bonds and bring dummy BS back to Mitaka 6/13.
* Mark worked on solutions to allow a [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/TypeB/dummyBS|larger mirror on dummy BS]]. After discussions with Simon and Akutsu-san we decided to go with a stainless steel plate solution. The gluing can go ahead and we can attach the plates later.
* Mark worked on list of items for purchase in FY2016.
* Mark worked on finding connectors for vacuum-compatible geophone adapters.
* Mark worked more on [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4235|E1504235 BS Assembly Procedure]] ([[https://onedrive.live.com/redir?resid=D5CCFA70A378E0D0!195&authkey=!AM_usynuo9QI57g&ithint=folder,webloc|Draft on OneDrive]])
* '''Discussions '''
* BS assembly frame contract: ordered. delivery date = July 8.
* '''Review: send doodle poll (Mark)'''
== Type A ==
* [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4792|Task list]] (Takahashi) -> working on more detailed one.
* Clean booth design for 2F https://www.dropbox.com/s/8bi9ij91radmpt5/IXYV160512.pdf?dl=0
* [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5250|Sketch]]
* Discussing with Miyoki-san (Takahashi, Aso)
* Prototype test of the EQ stop
* Cleaned the ATC room for starting the test
* Frame lock: made a design change to make it stronger. Will order it next week.
* Sensors to monitor the release of the SFs from the EQ stop.
* Updated [[https://www.dropbox.com/s/trc12j72nyg0hht/release-sensor_for_Type-A_20160527.pdf?dl=0|Design]]
* Type-B Standard Filters preparation
* Will start the measurement of the SFs for Type-A from the next week.
* The next Type-A meeting will be on 6/9.
* #Simultion (Okutomi)
* #Local sensors for BF
== Type-Bp modification ==
* Modification for bKAGRA<
>
* Saito-san of ATC produced the first draft design -> now checking the design (Shoda)<
>
* First draft of the installation procedure & Checking if there is any conflict (Fujii)
* Still waiting for the LVDT design from Virgo
* Full CAD model of the original Type-Bp is almost done (Shoda)
* A/I till next week
* First draft of the installation procedure (Fujii)
* Full CAD model of the original Type-Bp and the new Type-Bp (Shoda)
== Site work plan for the next week ==
* Mon:
* Tue:
* Wed:
* Thu:
* Fri:
BS crane will not be available: 13th -14th of June
== Travel Plans ==
* Travel (Week of 6/6)
* Takahashi:
* Shoda:
* Mark:
* Fabian:
* Okutomi:
* Fujii:
* Ishizaki:
* Hirata:
* Ohishi:
* Sato:
* Travel (Week of 6/13):
* Takahashi:
* Shoda:
* Mark:
* Fabian:
* Okutomi:
* Fujii:
* Ishizaki:
* Hirata:
* Ohishi:
Mark is away: July 8-20
== Other ==
* Safety: no incident
* #GAS blade inspection by Virgo (Takahashi)
* Shipped the blades. Will get results in 1-2 months.
== Next meeting ==
2016/6/10(Fri) 13:30 -
Next VIS F2F 6/17
Next next F2F 7/8