Main Interferometer Subsystem

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Presentation transcript:

Main Interferometer Subsystem Installation and Commissioning Plans Yoichi Aso KAGRA F2F Meeting 2014/2/13

What have we done so far ? Optical Design Signal Extraction Scheme Optical Layout Mirror specs. Noise requirements Y-arm ITMY REFL PRM PR2 POX ITMX ETMX Laser Beam From MC BS X-arm PR3 SR2 AS_DC OMC SR3 SRM

Things to be prepared before the installation begins (for iKAGRA) For Control Detailed servo design Analog Circuits (RFPD, DCPD, RFQPD, DCQPD, Demodulator, Whitening Filter, RF Distribution, CARM servo board, MC servo board) Realtime code For light detection Optical layout for detection benches Beam Shutters (?) Optical tables for detection benches (IOO) Miscellaneous small optics (mirrors, holders, lenses, polarizers, etc) (IOO)

Installation Electronics Installation into racks Cabling all by done by ourselves

Installation Detection Bench Put optical tables when the space is possible Roughly put PDs on the table and start wiring Assemble detection optics when the light comes out of the chamber

Installation Mirrors How to put mirrors at precise locations (esp. PRC, SRC) Interferometric verification of distances ? Initial alignment procedure Mode matching confirmation

Commissioning in 5 months !? Interferometer commissioning can start only after the BS installation Michelson -> X-arm -> Y-arm -> FPMI in 5 months !? 2 - 3 MIF commissioning people at the site At least 1 MIF expert At least 1 suspension expert, 1 RTS expert must be present

What about bKAGRA ? Put important PDs into vacuum Air-tight enclosures Vacuum compatible beam shutters Output optics Output Faraday Output Mode Matching Telescope Output Mode Cleaner Green Lock System