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= Minutes of the Type-A Meeting on 2016/6/14 =
2016/6/14 13:00 - 15:00 @ Room 210		 Information of the Type-A Seismic Attenuation System (SAS).
This page wants information about not only room-temperature parts but also cryogenic vibration isolation system.
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Participants: Takahashi, Ishizaki, Sato, Okutomi <<TableOfContents(3)>>
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== Task list ==
[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4792]]		 -------
[[TypeAdesign|{{attachment:figTypeAsasNamed1.png||width=25%,align="right"}}]]
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=== Minutes ===
 0-1 Assembly model (Ishizaki): From EQ stop, next with chamber.
 0-2 Simulation (Okutomi): Conversion from SUMCON to Simulink was ok. Problem is the structure of control in Matlab. Reconstrunting now.
 3-5 ACC preparation (Sato): Make working space in the 20m lab.
 5-1 Manufacturing of blade (Takahashi): Target of 200kg, 5 blades are used.
 5-6 Design of damper (Sato): Asking design of LVDT-Act. from VIRGO. The device is placed at the center of mass.
 6-1 Design of EQ stop (Ishizaki)
  * Structure analysis: Two cases were calculated. Share stress was 1/6 of limit, and principal stress was 1/7 of limit in the max. case.
  * Modeling: Making with consideration of procedure and tools.
  * Frame lock: Max. stress was 160MPa with +5mm thickness (limit 180MPa).
 6-4 Design of release sensor (Sato)
  * Position: Inner side of the stage. Need to addtional machining to the EQ stop plate.
  * Electronics: Circuit is simple in the test (handmade).
 8-1 Design of dummy payload (Okutomi, Ishizaki)
  * Condition: 25cm mirror, alignment by moving mass. Make a cartoon.
  * Actuation: Length control is necessary? Check PZT actuator.
 9-1 Test plan: Prepare for 2 sets of release sensors. Check FR for 2 BFs.		 == Drawings ==
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=== Next meeting ===
2016/6/21 13:00		  * Type-A SAS whole assy
 * Vacuum chamber
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0053/T1605385/002/VM5926_KAGRAIXV_Type-A.pdf|Vertical]] (IXV, EXV, IYV, EYV)
  * Cryostat

=== Room-temperature parts ===
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5460|Earthquake stop - Security flame]]
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5634|Pre-Isolator]]
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5636|Top Filter]]
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5637|Inverted Pendulum]]
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5638|F0 LVDT-actuator unit]]
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5639|Blade spring for static position adjustment]]
 * Magnetic Damper
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5635|Standard Filter]]
 * Bottom Filter
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5656|BF LVDT and Attachments]]
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5743|Maraging wire]]
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5461|Dummy Payload]]
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5462|Hoist's tools]]

=== Cryogenics ===
 * Cryo-Payload assy
 * Platform
 * Marionette
 * Marionette Recoil Mass
 * Intermediate Mass
 * Intermediate Recoil Mass
 * Sapphire Mirror (Test Mass)
 * Recoil Mass
 * Heat link
  * Heat link suspension

== Documents ==
=== Reports ===
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5196|Requirements for Type-A SAS]]

=== Installation Procedure ===
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=410|Initial concept]]
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5500|Installation procedure of Type-A system]]
=== Measurement and Analysis ===
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5105|[2016.08.15] Measurements of Standard Filter]]
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5707|[2016.09.30] Measurements of BF LVDT Prototype]]

== Electronics ==
[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=5193|List of drivers for VIS]]
 * LVDT
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2826|LVDT Driver]]
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2117|LVDT-coil distributor]]
  * LVDT-coil combiner
 * Accelerometer
  * ACC driver
 * Coil-magnet actuator
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3502|High power coil driver]]
  * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=3506|Low power coil driver]]
 * Stepper motor
  * Stepper motor driver
 * Picomotor
  * Picomotor driver
 * Cabling

-----
== Members of Type-A Team ==
 . Ryutaro TAKAHASHI (Leader)
 . Hideharu ISHIZAKI
 . Naohisa SATO
 . Koki OKUTOMI

== Schedule ==
[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4792|Task list]]

== Meeting ==

 * Type-A team meeting [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/VIS/TypeA/Meeting|Minutes]]

== See also ==
 * [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=4005|JGW-E1504005]]: VIS Document and Drawing Tree (Type-A)
 * [[http://gwwiki.icrr.u-tokyo.ac.jp/JGWwiki/KAGRA/Subgroups/CRY|KAGRA/Subgroups/CRY]]

Information of the Type-A Seismic Attenuation System (SAS). This page wants information about not only room-temperature parts but also cryogenic vibration isolation system.

Contents

  1. Drawings
    1. Room-temperature parts
    2. Cryogenics
  2. Documents
    1. Reports
    2. Installation Procedure
    3. Measurement and Analysis
  3. Electronics
  4. Members of Type-A Team
  5. Schedule
  6. Meeting
  7. See also

TypeAdesign

Drawings

  • Type-A SAS whole assy
  • Vacuum chamber

Room-temperature parts

Cryogenics

  • Cryo-Payload assy
  • Platform
  • Marionette
  • Marionette Recoil Mass
  • Intermediate Mass
  • Intermediate Recoil Mass
  • Sapphire Mirror (Test Mass)
  • Recoil Mass
  • Heat link
    • Heat link suspension

Documents

Reports

Installation Procedure

Measurement and Analysis

Electronics

List of drivers for VIS

Members of Type-A Team

  • Ryutaro TAKAHASHI (Leader)
  • Hideharu ISHIZAKI
  • Naohisa SATO
  • Koki OKUTOMI

Schedule

Task list

Meeting

See also

KAGRA/Subgroups/VIS/TypeA (last edited 2021-11-02 17:29:27 by naohisa.sato)