vibration isolation subsystem kagra face to face meeting (31 july, 2012) r. takahashi (icrr), k....
DESCRIPTION
1.Overview 1. ConfigurationTRANSCRIPT
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Vibration Isolation SubsystemVibration Isolation Subsystem
KAGRAface to face meeting(31 July, 2012)
R. Takahashi (ICRR), K. Yamamoto (ICRR), R. Takahashi (ICRR), K. Yamamoto (ICRR), T. Uchiyama (ICRR), T. Sekiguchi (ICRR), T. Uchiyama (ICRR), T. Sekiguchi (ICRR),
H. Ishizaki (NAOJ), A. Takamori (ERI), H. Ishizaki (NAOJ), A. Takamori (ERI), R. DeSalvo (Univ. of Sannio), E. Majorana (INFN), R. DeSalvo (Univ. of Sannio), E. Majorana (INFN), J. van den Brand (NIKHEF), E. Hennes (NIKHEF), J. van den Brand (NIKHEF), E. Hennes (NIKHEF),
A. Bertolini (NIKHEF)A. Bertolini (NIKHEF),, + N. Lockerbie (Univ. Strathclyde) + N. Lockerbie (Univ. Strathclyde)
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1. Overview1. Configuration2. Schedule and Status
2. R&D 1. Pre-isolator2. Payload3. Outer frame
ConContentstents
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1. Overview
1. Configuration
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Type-A: IP + GASF (5 stage) + Payload (23kg, cryogenic)Type-B: IP + GASF (3 stage) + Payload (10kg/20kg)Type-C: Stack + Single~Triple-pendulum (~1kg)
ConfigurationConfiguration
Chamber iKAGRA bKAGRAIXV, IYV, EXV, EYV Type-AIXA, IYA, EXA, EYA Type-B Payload on rigid
table(for ITM/ETM)
BS, PR2, PR3 Type-B (Only payload is free, other parts are not used)
Type-B
PRM, SRM, SR2, SR3 Type-BMCF, MCE, IFM, IMM Type-C Type-COFI, OMC, EXT, EYT Type-C
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Top filter[Filter0]
Inverted Pendulum (IP)
Filter1 (Filter1~3 in Type-A)
Bottom Filter (BF)
Intermediate Mass (IM)Intermediate Recoil Mass (IRM)
Test Mass (TM)Recoil Mass (RM)
Optical Bench[Breadboard]
Pre-isolator
Payload
Filter chain
Type-A/BType-A/B
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Type-AType-A
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Type-BType-B
Outer frame
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Type-B Payload
Rigid table
Type-C Payload
Stack
Type-CType-CType-B payload Type-B payload on on rigid tablerigid table
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Sensors & Actuators (Pre-isolator)Sensors & Actuators (Pre-isolator)
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Sensors & Actuators (Type-B Payload)Sensors & Actuators (Type-B Payload)
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Sensors & Actuators (Type-C1 for MC)Sensors & Actuators (Type-C1 for MC)
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Sensors & Actuators (Type-C2 for MMT)Sensors & Actuators (Type-C2 for MMT)
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1. Overview
2. Schedule and Status
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Schedule
Current task•Prototype test of the pre-isolaor in Kashiwa•Assembling of the GAS filters in Akeno
Order in 2012FY•Payload prototype: June•6 Pre-isolators: October
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Preparation for control test of the pre-Isolator
prototype
The level of the IP base was tuned using the hydraulic piston.
Motor sliders and LVDT-actuator modules were assembled onto the IP with cabling.
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Storage & Assembling in Akeno
•The 19 GAS filters have been delivered in February, 2012.•The clean booth is ready for assembling.•We are preparing for tuning of wagic wands.
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Manufacturing of Payload Prototype
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2. R&D
1. Pre-isolator
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Measurements of Pre-Isolator prototype
by T. Sekiguchi
Pre-isolator at ICRR
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Q of the top filter depends on the amplitude.
This result is consisted with Self-Organized Criticality Model.
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2. R&D
2. Payload
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OSEM design and test by N. Lockerbie
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The sensitivity is ~ 2.5x10-10 m/Hz1/2 at 1 Hz, and ~7x10-10 m/Hz1/2 at 0.1 Hz.
The linear range is ~ 1mm.
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2. R&D
3. Outer Frame
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Dmping material for Outer frame of Type-BDmping material for Outer frame of Type-Bby H. Ishizaki & R. Takahashiby H. Ishizaki & R. Takahashi
PropsSqure pipe: 100x100x3.2t 2,000hMaterial: SS400
with/without Mineracast
Anker platePlate: 220x220x25tMaterial: Mineracast
Mineracast is a complex material containing grains of granite that are solidified with resin and is similar in nature to stone.
@NAOJ
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Power spectrum density Transfer function
Preliminary resultsPreliminary results